{ "id": "pumpkin-cubesat-kit-structure", "title": "Pumpkin CubeSat Kit structure", "maker": "Pumpkin Space Systems", "maker_type": "Commercial", "kind": "structure", "category": "structures", "page": "https://spacemushroom.com/space-products/pumpkin-cubesat-kit-structure/", "website": "https://www.cubesatkit.com/content/structure.html", "summary": "Pumpkin's CubeSat Kit aluminium chassis in a sheet-metal version and a machined Pro version. The page lists alloys, a hard-anodize finish and stainless fasteners.", "application": "A CubeSat chassis for building a small satellite from commercial parts. It is offered as a sheet-metal frame or a machined Pro frame, in sizes from 0.5U to 3U, and held together by only ten screws. Helpful for teams that want a flight-ready structure with a defined finish and plating instead of designing their own.", "story": { "headline": "Pumpkin's CubeSat Kit structure is an aluminium frame for small satellites, held together by only ten screws.", "intro": [ "Pumpkin Space Systems sells this frame for building a small satellite from commercial parts. It comes in five lengths, from 0.5U to 3U, either as a sheet-metal chassis or as a machined Pro version. A 1U frame is 113.50 millimetres long. Pumpkin says its aims were room inside, low weight and strength.", "Pumpkin describes the structure as three major assemblies. Six M3 screws fasten the base plate and four fasten the cover plate. Only the chassis walls change from one size to the next. The aluminium is hard anodised where parts wear and coated with alodyne, a clear chromate finish, so the whole frame conducts electricity." ], "built": [ { "title": "Chassis walls", "text": "The standard walls are 5052-H32 aluminium sheet, joined at one riveted edge, and Pumpkin says the one-piece design resists compression and twist. Solid and skeletonised versions are sold, the second with cut-outs for solar cells and sensor views. The Pro version is machined from 7075-T6 billet.", "parts": [ "Chassis Walls Assembly", "Chassis Walls, solid-wall version (0.5U to 3U)", "Chassis Walls, skeletonized version (0.5U to 3U)", "Machined chassis components (CubeSat Kit Pro)", "Riveted edge of the Chassis Walls" ] }, { "title": "Base and cover plates", "text": "Both plates are 5052-H32 aluminium. The base plate closes the end where the motherboard sits and carries one or two separation switches, which tell the satellite it has left its dispenser. Cover plates come in other forms, one for up to four switches and one with an 88 millimetre central cut-out.", "parts": [ "Base Plate Assembly (solid-wall or skeletonized)", "Cover Plate Assembly (solid-wall or skeletonized)", "Separation switches in the base plate (single or dual)", "Quad-switch Cover Plate Assembly", "Large Aperture Cover Plate Assembly" ] }, { "title": "Screws, rods and spacers", "text": "Every fastener is non-magnetic stainless steel. Four threaded rods and aluminium spacers hold the stack of circuit boards in compression. Four small standoffs of 7075-T6 aluminium tie the rods to the chassis.", "parts": [ "Chassis screws (ten per structure, M3x5mm flathead)", "All fasteners, captive and loose", "Threaded rods, M3 stainless (x4)", "Through-hole spacers, aluminium, 15.24 mm x 6.0 mm OD (x16)", "Midplane Standoffs A, B, C, D and four M3x5 mm screws" ] }, { "title": "Feet and solar clips", "text": "The corner feet are machined from 7075-T6 aluminium and hard anodised. An option adds spring plungers to them, which push a neighbouring satellite away in a shared dispenser. A set of eight stainless-steel clips holds solar panels on all six sides without extra fasteners, adding 9 grams.", "parts": [ "Feet", "Separation plungers in the corner feet (option)", "Solar Panel Clips Set (P/N 711-00346, 7 + 1 clips)" ] }, { "title": "Payload sections", "text": "An adapter plate joins a machined external payload section to the sheet-metal chassis, and a payload cover plate closes the far end. Sections run from 0.5U to 2.5U in length. Both plates are 5052-H32 aluminium, and the section's edge rails are hard anodised.", "parts": [ "Payload Adapter Plate", "Payload Cover Plate Assembly", "External payload edge rails" ] } ], "materials": [ { "name": "Aluminium alloy 5052-H32", "mid": "aluminium-5052", "where": "The sheet-metal walls, the base and cover plates, and the payload adapter and cover plates." }, { "name": "Aluminium alloy 7075-T6", "mid": "aluminium-7075", "where": "The machined Pro chassis, the corner feet and the midplane standoffs." }, { "name": "Non-magnetic stainless steel", "mid": "stainless-steel-nonmagnetic", "where": "Every fastener, including the ten chassis screws." }, { "name": "Stainless steel", "mid": "stainless-steel", "where": "The threaded rods, nuts and solar panel clips. The grade is not given." }, { "name": "Aluminium", "mid": "aluminium", "where": "The spacers between circuit boards. The alloy is not given." } ], "connections": "Pumpkin's drawing 810-00252 sets out the CubeSat dimensions the kit conforms to. The kit fits Cal Poly's P-POD dispenser, which takes up to 3U. Delfi-C3, a 3U satellite from TU Delft, launched on India's PSLV in 2008 with X-POD dispensers. The earliest flight Pumpkin names is Libertad-1, launched from Baikonur in 2007. GOLIAT flew on the maiden flight of ESA's Vega rocket in 2012.", "unknown": "The structure page gives no weight for the bare frame, no load or vibration ratings and no temperature range. It doesn't say which alloy goes with which size, beyond sheet metal against Pro, or which metals plate the contact surfaces. Its copyright line runs 2000 to 2013, so some details may be dated.", "facts": [ { "label": "Available lengths", "value": "0.5U, 1U, 1.5U, 2U and 3U" }, { "label": "Fastener count", "value": "Ten M3x5mm stainless-steel flathead screws for the whole structure" }, { "label": "1U length", "value": "113.50 mm" }, { "label": "Complete skeletonised 1U kit mass", "value": "300 g total with flight module and transceiver" }, { "label": "First flights by revision", "value": "Rev B 2007 (Libertad-1), Rev C 2008 (Delfi-C3), Rev D 2009 (ITU-pSAT1)" } ] }, "specifications": [ { "label": "Available lengths", "value": "0.5U, 1U, 1.5U, 2U and 3U", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "in 0.5U, 1U, 1.5U, 2U & 3U overall lengths" }, { "label": "Size variation", "value": "Only the Chassis Walls Assembly differs between sizes", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "the only difference between sizes being the Chassis Walls Assembly" }, { "label": "Fastener count", "value": "Ten M3x5mm stainless-steel flathead screws for the whole structure", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "only ten M3x5mm stainless-steel flathead screws are required to hold the entire structure together" }, { "label": "Design standard", "value": "Plating/finish to meet the CubeSat Design Specification (CDS)", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "hard-anodized and alodyned as required to meet the CDS" }, { "label": "Hard anodize spec", "value": "MIL-A-8625F Type III Class 1, 0.0005 in min to 0.0008 in max", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "(HARD) ANODIZE, MIL-A-8625F, TYPE III, CLASS 1 (.0005\" MIN to .0008\" MAX)" }, { "label": "Clear chromate spec", "value": "MIL-DTL-5541F Type II Class 1A, RoHS compliant", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "(CLEAR) NON-HEXAVALENT CHROMATE, MIL-DTL-5541F Type II, CLASS 1A (RoHS COMPLIANT)" }, { "label": "Complete skeletonized 1U kit mass (flyer)", "value": "300 g total with flight module and transceiver", "source_url": "https://www.cubesatkit.com/docs/cubesatkitflyer.pdf", "quote": "300g total mass1 maximizes available user payload." }, { "label": "System chart: mass allotment printed with each size (not the empty structure mass)", "value": "0.5U 500 g, 1U 1000 g, 1.5U 1500 g, 2U 2000 g, 3U 3000 g", "source_url": "https://www.cubesatkit.com/docs/cubesatkitsystemchart.pdf", "quote": "1U 1000g 113.50mm 1.5U 1500g 170.25mm 2U 2000g 227.00mm 3U 3000g 340.50mm 0.5U 500g 56.75mm" }, { "label": "System chart: overall length of each size", "value": "0.5U 56.75 mm, 1U 113.50 mm, 1.5U 170.25 mm, 2U 227.00 mm, 3U 340.50 mm", "source_url": "https://www.cubesatkit.com/docs/cubesatkitsystemchart.pdf", "quote": "1U 1000g 113.50mm 1.5U 1500g 170.25mm 2U 2000g 227.00mm 3U 3000g 340.50mm 0.5U 500g 56.75mm" }, { "label": "External payload section lengths", "value": "0.5U 55.22 mm, 1U 111.97 mm, 1.5U 168.72 mm, 2U 225.47 mm, 2.5U 282.22 mm", "source_url": "https://www.cubesatkit.com/docs/cubesatkitsystemchart.pdf", "quote": "55.22mm 111.97mm 168.72mm 225.47mm 282.22mm" }, { "label": "Flight component rating (flyer)", "value": "-40 to +85 C", "source_url": "https://www.cubesatkit.com/docs/cubesatkitflyer.pdf", "quote": "All flight components rated for -40 to +85 ºC." }, { "label": "Control drawing: 1U length", "value": "113.50 mm", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf", "quote": "113.50" }, { "label": "Control drawing: tolerance, no decimal place", "value": "0.50 mm", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf", "quote": "X. = .50" }, { "label": "Control drawing: tolerance, one decimal place", "value": "0.25 mm", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf", "quote": ".X = .25" }, { "label": "Control drawing: tolerance, two decimal places", "value": "0.10 mm", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf", "quote": ".XX = .10" }, { "label": "First flights by revision", "value": "Rev B 2007 (Libertad-1), Rev C 2008 (Delfi-C3), Rev D 2009 (ITU-pSAT1)", "source_url": "https://www.cubesatkit.com/content/space.html", "quote": "CubeSat Kit 3U structure D 2010 RAX, RAX-2, CSSWE 1 C 2008 Delfi-C3" }, { "label": "CDS Rev 14.1: rail minimum width", "value": "8.5 mm, measured from the rail edge to the first protrusion", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "Rails shall have a minimum width of 8.5mm measured from the edge of the rail to the first protrusion on each face." }, { "label": "CDS Rev 14.1: rail surface roughness", "value": "less than 1.6 micrometres (a 'should')", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "Rails should have a surface roughness less than 1.6 µm." }, { "label": "CDS Rev 14.1: rail edge radius", "value": "at least 1 mm (a 'should')", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "The edges of the rails should be rounded to a radius of at least 1 mm." }, { "label": "CDS Rev 14.1: rail end contact area", "value": "6.5 mm x 6.5 mm minimum on the +/- Z face", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "The ends of the rails on the +/- Z face shall have a minimum surface area of 6.5 mm x 6.5 mm contact area" }, { "label": "CDS Rev 14.1: protrusion limit", "value": "6.5 mm normal to the surface from the plane of the rail", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "shall protrude farther than 6.5 mm normal to the surface from the plane of the rail" }, { "label": "CDS Rev 14.1: rail contact with dispenser", "value": "at least 75% of the rail", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "At least 75% of the rail should be in contact with the dispenser rails." }, { "label": "CDS Rev 14.1: structure material", "value": "aluminium alloy; 7075, 6061, 6082, 5005 and/or 5052 typical", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "Typically, Aluminum 7075, 6061, 6082, 5005, and/or 5052 are used for both the main CubeSat structure and the rails." }, { "label": "CDS Rev 14.1: rail surface finish", "value": "hard anodized wherever it touches the dispenser rails", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "shall be hard anodized to prevent any cold welding within the dispenser" }, { "label": "CDS Rev 14.1: maximum mass per size", "value": "1U 2.00 kg, 1.5U 3.00 kg, 2U 4.00 kg, 3U 6.00 kg, 6U 12.00 kg, 12U 24.00 kg", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "1U 2.00 1.5U 3.00 2U 4.00 3U 6.00 6U 12.00 12U 24.00" }, { "label": "CDS Rev 14.1: separation spring guideline", "value": "max force below 6.7 N (1.5 lbf), stroke above 2.5 mm", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "select a separation spring with a max force less than 6.7 N (1.5 lbf) but with a stroke length greater than 2.5 mm" }, { "label": "CDS Rev 14.1: deployment switch", "value": "at least one, actuated while the CubeSat is in the dispenser", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "The CubeSat shall have, at a minimum, one deployment switch, which is actuated while integrated in the dispenser." }, { "label": "CDS Rev 14.1: outgassing", "value": "TML at most 1.0 % and CVCM at most 0.1 %", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "CubeSats materials shall have a Total Mass Loss (TML) of less than or equal to 1.0 %" }, { "label": "CDS Rev 14.1: remove-before-flight pin", "value": "required; protrudes no more than 6.5 mm from the rail surface when fully inserted", "source_url": "https://www.nasa.gov/wp-content/uploads/2018/01/cubesatdesignspecificationrev14_12022-02-09.pdf", "quote": "The RBF pin shall protrude no more than 6.5 mm from the CubeSat rail surface when it is fully inserted into the satellite." } ], "features": [ { "text": "Design drivers: maximal internal volume, lightness, strength", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "The need for maximal internal volume" }, { "text": "Contact surfaces can be plated to meet the CDS", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "The ability to plate contact surfaces to meet the CubeSat Design Specification (CDS)" }, { "text": "Non-magnetic fasteners and good EM shielding sought", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "The desire to present good electromagnetic shielding" }, { "text": "Based on precision sheet-metal fabrication with machined elements", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "based primarily on precision sheet-metal fabrication, with machined elements as required" }, { "text": "All sizes share common parts", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "all share common parts" }, { "text": "Monolithic chassis walls resist compression and twist", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "its ability to resist forces in compression and in twist" }, { "text": "Accepts external payloads via an External Payload Specification", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "the CubeSat Kit can easily accommodate external payloads" }, { "text": "Approach described as space-proven; used in MISC 2 bus under NRO Colony I", "source_url": "https://www.cubesatkit.com/content/structure.html", "quote": "Pumpkin's now space-proven approach" } ], "parts": [ { "assembly": "Chassis walls (sheet-metal CubeSat Kit)", "parts": [ { "part": "Chassis Walls Assembly", "material": "5052-H32 Aluminum sheet metal", "form": "sheet", "finish": "hard-anodized and alodyned as required to meet the CDS", "standard": "MIL-A-8625F Type III Class 1", "hardware_ref": null, "quote": "Sheet-metal CubeSat Kit chassis components are fabricated from 5052-H32 Aluminum sheet metal, hard-anodized and alodyned as required to meet the CDS.", "source_url": "https://www.cubesatkit.com/content/structure.html", "profile": "aluminium-5052", "mid": "aluminium-5052" } ] }, { "assembly": "Chassis (machined CubeSat Kit Pro)", "parts": [ { "part": "Machined chassis components (CubeSat Kit Pro)", "material": "7075-T6 billet Aluminum", "form": "billet", "finish": "hard-anodized and alodyned as required to meet the CDS", "standard": "MIL-A-8625F Type III Class 1", "hardware_ref": null, "quote": "Machined CubeSat Kit Pro chassis components are fabricated from 7075-T6 billet Aluminum, hard-anodized and alodyned as required to meet the CDS.", "source_url": "https://www.cubesatkit.com/content/structure.html", "profile": "aluminium-7075", "mid": "aluminium-7075" }, { "part": "Feet", "material": "7075-T6 Aluminum", "form": "machined", "finish": "hard-anodized", "standard": "MIL-A-8625F Type III Class 1", "hardware_ref": null, "quote": "Individually machined Aluminum components (e.g. feet and Midplane Stadoffs) are made from 7075-T6 Aluminum, and are hard-anodized.", "source_url": "https://www.cubesatkit.com/content/structure.html", "profile": "aluminium-7075", "mid": "aluminium-7075" }, { "part": "Midplane Standoffs", "material": "7075-T6 Aluminum", "form": "machined", "finish": "hard-anodized", "standard": "MIL-A-8625F Type III Class 1", "hardware_ref": "Midplane Standoff Kit (4/4) (named on system chart; part number not unambiguously readable)", "quote": "Individually machined Aluminum components (e.g. feet and Midplane Stadoffs) are made from 7075-T6 Aluminum, and are hard-anodized.", "source_url": "https://www.cubesatkit.com/content/structure.html", "profile": "aluminium-7075", "mid": "aluminium-7075" } ] }, { "assembly": "Fasteners and hardware", "parts": [ { "part": "Chassis screws (ten per structure, M3x5mm flathead)", "material": "stainless-steel", "form": "fastener", "finish": null, "standard": null, "hardware_ref": null, "quote": "only ten M3x5mm stainless-steel flathead screws are required to hold the entire structure together", "source_url": "https://www.cubesatkit.com/content/structure.html", "profile": null, "mid": "stainless-steel" }, { "part": "All fasteners, captive and loose", "material": "nonmagnetic stainless steel", "form": "fastener", "finish": null, "standard": null, "hardware_ref": null, "quote": "All fasteners (captive and loose) are made from nonmagnetic stainless steel.", "source_url": "https://www.cubesatkit.com/content/structure.html", "profile": null, "mid": "stainless-steel-nonmagnetic" }, { "part": "Additional hardware (e.g. inter-module spacers)", "material": "stainless steel or aluminum (stated generically, per-part not given)", "form": "spacer", "finish": "conductive platings", "standard": null, "hardware_ref": null, "quote": "Additional hardware (e.g., inter-module spacers) are generally made from stainless steel or aluminum, with conductive platings.", "source_url": "https://www.cubesatkit.com/content/structure.html", "profile": null, "mid": null } ] }, { "assembly": "Whole-structure statements (flyer)", "parts": [ { "part": "Structure, three major assemblies", "material": "aluminum (stated generically)", "form": "assembly", "finish": "Structure is fully alodyned for electrical conductivity. Wear surfaces are hard-anodized.", "standard": null, "hardware_ref": null, "quote": "Rigid and lightweight aluminum construction with only three major assemblies and all-stainless fasteners. | Structure is fully alodyned for electrical conductivity. Wear surfaces are hard-anodized.", "source_url": "https://www.cubesatkit.com/docs/cubesatkitflyer.pdf", "profile": "aluminium", "mid": "aluminium" } ] }, { "assembly": "External payload interface (optional parts)", "parts": [ { "part": "Payload Cover Plate Assembly", "material": "not stated (drawing says material: see notes; the notes are not on the public sheet)", "form": "plate", "finish": null, "standard": null, "hardware_ref": "P/N 703-00407", "quote": "P/N 703-00407", "source_url": "https://www.cubesatkit.com/docs/CSK_Payload_Overview-A2.pdf", "profile": null, "mid": null }, { "part": "Payload Adapter Plate", "material": "not stated (drawing says material: see notes)", "form": "plate", "finish": null, "standard": null, "hardware_ref": "703-00398", "quote": "Payload Adapter Plate 703-00398", "source_url": "https://www.cubesatkit.com/docs/CSK_Payload_Overview-A2.pdf", "profile": null, "mid": null }, { "part": "External payload edge rails", "material": "not stated", "form": "rail", "finish": "TYPE III HARD ANODIZE .0005\" MIN / .0010\" MAX", "standard": "Type III hard anodize (specification document not named on this sheet)", "hardware_ref": null, "quote": "EDGE \"RAIL\" SURFACE TO | RECIEVE TYPE III HARD ANODIZE | .0005\" MIN / .0010\" MAX", "source_url": "https://www.cubesatkit.com/docs/CSK_Payload_Overview-A2.pdf", "profile": null, "mid": null } ] }, { "assembly": "Chassis walls", "parts": [ { "part": "Chassis Walls, solid-wall version (0.5U to 3U)", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Solid-wall and skeletonized versions are available from stock.", "source_url": "https://www.pumpkinspace.com/store/p30/CubeSat_Kit%E2%84%A2_Chassis_Walls.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "One-piece primary structural element with a 97 mm x 97 mm internal cross-section", "specs": [ { "label": "Internal cross-section", "value": "97 mm x 97 mm", "quote": "each one offers a 97mm x 97mm internal cross-sectional volume", "source_url": "https://www.pumpkinspace.com/store/p30/CubeSat_Kit%E2%84%A2_Chassis_Walls.html" }, { "label": "Sizes", "value": "0.5U, 1U, 1.5U, 2U, 3U", "quote": "0.5 U 1 U 1.5 U 2 U 3 U", "source_url": "https://www.pumpkinspace.com/store/p30/CubeSat_Kit%E2%84%A2_Chassis_Walls.html" }, { "label": "External cross-section", "value": "100.0 mm x 100.0 mm", "quote": "All External Payloads and Chassis Walls measure 100.0mm x 100.0mm in cross section.", "source_url": "https://www.cubesatkit.com/docs/cubesatkitsystemchart.pdf" } ] }, { "part": "Chassis Walls, skeletonized version (0.5U to 3U)", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Solid-wall and skeletonized versions are available from stock.", "source_url": "https://www.pumpkinspace.com/store/p30/CubeSat_Kit%E2%84%A2_Chassis_Walls.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "Cut-out version of the chassis walls for solar cells and sensor views" }, { "part": "Mounting holes for Midplane Standoffs (on the Chassis Walls)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "CubeSat Kit Chassis Walls in 1U, 1.5U, 2U and 3U sizes have pre-drilled mounting holes for one or more MPS Kits", "source_url": "https://www.pumpkinspace.com/store/p36/Mid-plane_Standoff_Kit.html", "profile": null, "mid": null, "function": "Pre-drilled countersunk holes on two opposing sides of the walls, about every 100 mm above the base plate" }, { "part": "Riveted edge of the Chassis Walls", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "mechanical interference between the riveted edge of the CubeSat Kit Chassis Walls and this cover plate", "source_url": "https://www.pumpkinspace.com/store/p223/CubeSat_Kit%E2%84%A2_Quad-switch_Cover_Plate_Assembly.html", "profile": null, "mid": null, "function": "Joint of the sheet-metal walls; interferes with one switch tab of the quad-switch cover plate" } ] }, { "assembly": "Base plate assemblies", "parts": [ { "part": "Base Plate Assembly (solid-wall or skeletonized)", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Precision constructed from Al 5052-H32 and plated according to the CubeSat Design Specification (CDS)", "source_url": "https://www.pumpkinspace.com/store/p32/CubeSat_Kit%E2%84%A2_Base_Plate_Assembly.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "Closes the motherboard end of the structure; secured to the chassis walls by six screws", "specs": [ { "label": "Fastening", "value": "six M3 flathead stainless-steel screws", "quote": "secured to the Chassis Walls via six M3 flathead stainless-steel screws", "source_url": "https://www.pumpkinspace.com/store/p32/CubeSat_Kit%E2%84%A2_Base_Plate_Assembly.html" } ] }, { "part": "Separation switches in the base plate (single or dual)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Users can choose base plates with a single separation switch (deprecated), or with dual, independent separation switches.", "source_url": "https://www.pumpkinspace.com/store/p32/CubeSat_Kit%E2%84%A2_Base_Plate_Assembly.html", "profile": null, "mid": null, "function": "Deployment (separation) switches; second switch sits on the diagonally opposite corner", "specs": [ { "label": "Terminals", "value": "C, NC and NO solder terminals", "quote": "Each separation switch has C, NC and NO solder terminals.", "source_url": "https://www.pumpkinspace.com/store/p32/CubeSat_Kit%E2%84%A2_Base_Plate_Assembly.html" }, { "label": "Dual-switch architecture since", "value": "2012, with Motherboard Module Rev E", "quote": "Pumpkin switched to a dual-switch architecture in 2012 with the advent of the Motherboard Module (MBM) Rev E", "source_url": "https://www.pumpkinspace.com/store/p32/CubeSat_Kit%E2%84%A2_Base_Plate_Assembly.html" } ] }, { "part": "Large Aperture Base Plate Assembly, Dual Switch (P/N 710-02203)", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Precision constructed from Al 5052-H32 and plated according to the CubeSat Design Specification (CDS)", "source_url": "https://www.pumpkinspace.com/store/p213/CubeSat_Kit%E2%84%A2_Large_Aperture_Base_Plate_Assembly%2C_Dual_Switch.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "Base plate with a large central opening" }, { "part": "Base Plate Assembly for AntS Antenna (P/N 710-00960)", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "made specifically to accommodate the third-party AntS deployable antenna system", "source_url": "https://www.pumpkinspace.com/store/p44/CubeSat_Kit%E2%84%A2_Base_Plate_Assembly_for_AntS_Antenna.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "Base plate made to take the third-party AntS deployable antenna system, with dual separation switches", "specs": [ { "label": "Antenna fastening", "value": "four threaded fasteners", "quote": "The AntS is secured to this base plate with four threaded fasteners.", "source_url": "https://www.pumpkinspace.com/store/p44/CubeSat_Kit%E2%84%A2_Base_Plate_Assembly_for_AntS_Antenna.html" } ] }, { "part": "2nd Switch (L2) Spring Upgrade Kit (P/N 711-01478)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Hardware parts to provide added spring strength to the 2nd switch (L2) on Pumpkin base plate assemblies.", "source_url": "https://www.pumpkinspace.com/store/p212/2nd_Switch_%28L2%29_Spring_Upgrade_Kit.html", "profile": null, "mid": null, "function": "Adds spring strength to the second switch; every chassis assembly ships with it since 1 January 2017" } ] }, { "assembly": "Cover plate assemblies", "parts": [ { "part": "Cover Plate Assembly (solid-wall or skeletonized)", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Each Cover Plate Assembly includes four corner feet.", "source_url": "https://www.pumpkinspace.com/store/p27/CubeSat_Kit%E2%84%A2_Cover_Plate_Assembly.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "Closes the payload end; secured to the chassis walls by four screws", "specs": [ { "label": "Fastening", "value": "four M3 flathead stainless-steel screws", "quote": "each Cover Plate Assembly is secured to the Chassis Walls via four M3 flathead stainless-steel screws", "source_url": "https://www.pumpkinspace.com/store/p27/CubeSat_Kit%E2%84%A2_Cover_Plate_Assembly.html" } ] }, { "part": "Separation plungers in the corner feet (option)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Options include separation plungers in the feet, and additional separation switches in the feet.", "source_url": "https://www.pumpkinspace.com/store/p27/CubeSat_Kit%E2%84%A2_Cover_Plate_Assembly.html", "profile": null, "mid": null, "function": "Plungers that push a neighbouring CubeSat away in a shared dispenser" }, { "part": "Quad-switch Cover Plate Assembly", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "permits the use of up to four separation / inhibit switches", "source_url": "https://www.pumpkinspace.com/store/p223/CubeSat_Kit%E2%84%A2_Quad-switch_Cover_Plate_Assembly.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "Cover plate carrying up to four independent separation / inhibit switches; four orientations", "specs": [ { "label": "Variants", "value": "solid-wall, or with a central hole of 88 mm diameter", "quote": "available in a solid-wall style and in a style that has a central hole of 88mm diameter", "source_url": "https://www.pumpkinspace.com/store/p223/CubeSat_Kit%E2%84%A2_Quad-switch_Cover_Plate_Assembly.html" } ] }, { "part": "Large Aperture Cover Plate Assembly", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "four corner feet and a central cutout of 88mm diameter", "source_url": "https://www.pumpkinspace.com/store/p40/CubeSat_Kit%E2%84%A2_Large_Aperture_Cover_Plate_Assembly.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "Cover plate with a central cutout for optics or antennas" }, { "part": "Cover Plate Assembly for AntS Antenna", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "This version of the Cover Plate is made specifically to accommodate the third-party AntS deployable antenna system.", "source_url": "https://www.pumpkinspace.com/store/p43/CubeSat_Kit%E2%84%A2_Cover_Plate_Assembly_for_AntS_antenna.html", "profile": null, "mid": null, "function": "Cover plate made to accommodate the third-party AntS deployable antenna, dual separation switches" } ] }, { "assembly": "External payload plates", "parts": [ { "part": "Payload Adapter Plate (P/N 703-00398), material now stated", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Precision constructed from Al 5052-H32 and plated according to the CubeSat Design Specification (CDS), each Payload Adapter Plate", "source_url": "https://www.pumpkinspace.com/store/p38/CubeSat_Kit%E2%84%A2_Payload_Adapter_Plate.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "Bulkhead between the sheet-metal chassis walls and an external machined payload; the store page gives the material that the drawing leaves as 'see notes'", "specs": [ { "label": "Fastening", "value": "four M3 flathead stainless-steel screws to the chassis walls; payload on an M3 bolt square pattern", "quote": "each Payload Adapter Plate is secured to the Chassis Walls via four M3 flathead stainless-steel screws", "source_url": "https://www.pumpkinspace.com/store/p38/CubeSat_Kit%E2%84%A2_Payload_Adapter_Plate.html" }, { "label": "Mass", "value": "30 g", "quote": "Payload Adapter Plate 703-00398 30g", "source_url": "https://www.cubesatkit.com/docs/cubesatkitsystemchart.pdf" } ] }, { "part": "Payload Cover Plate Assembly (P/N 710-02070), material now stated", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Precision constructed from Al 5052-H32 and plated according to the CubeSat Design Specification (CDS), a Payload Cover Plate Assembly", "source_url": "https://www.pumpkinspace.com/store/p39/CubeSat_Kit%E2%84%A2_Payload_Cover_Plate_Assembly.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "End cap of a hybrid sheet-metal plus machined structure; the store page gives the material that the drawing leaves as 'see notes'", "specs": [ { "label": "Feet", "value": "four corner feet to satisfy the CDS", "quote": "The Payload Cover Plate Assembly includes four corner feet to satisfy the CDS.", "source_url": "https://www.pumpkinspace.com/store/p39/CubeSat_Kit%E2%84%A2_Payload_Cover_Plate_Assembly.html" } ] }, { "part": "ADACS Payload Walls (P/N 703-00397)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "These three pieces can be mounted on an MAI-100/200 ADCS", "source_url": "https://www.pumpkinspace.com/store/p71/ADACS_Payload_Walls_%2F_1U_Chassis_MAI-100%2FMAI-200_Extension.html", "profile": null, "mid": null, "function": "Three-piece wall set that mounts on an MAI-100/200 ADCS in the middle of a 3U structure", "specs": [ { "label": "Mass", "value": "29 g", "quote": "ADACS Payload Walls 34.76mm 29g", "source_url": "https://www.cubesatkit.com/docs/cubesatkitsystemchart.pdf" } ] } ] }, { "assembly": "Module-stack hardware (Rod & Spacer Kit)", "parts": [ { "part": "Rod & Spacer Kit (1U 711-00839, 1.5U 711-00840, 2U 711-00841, 3U 711-00842)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "a system of four threaded rods, with coaxial aluminum through-hole spacers between adjacent modules", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html", "profile": null, "mid": null, "function": "Four threaded rods and spacers that hold the PC/104-sized module stack in compression", "specs": [ { "label": "Rod length per kit", "value": "1U 93 mm, 1.5U 150 mm, 2U 206.5 mm, 3U 320 mm", "quote": "711-00839 1U Kit 93 3.7 711-00840 1.5U Kit 150 6.5", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html" }, { "label": "Rod mass per kit", "value": "1U 3.7 g, 1.5U 6.5 g, 2U 8.5 g, 3U 13.2 g", "quote": "711-00841 2U Kit 206.5 8.5 711-00842 3U Kit 320 13.2", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html" } ] }, { "part": "Threaded rods, M3 stainless (x4)", "material": "Stainless steel (grade not stated)", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "M3 SST Threaded Rod of length", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html", "profile": null, "mid": "stainless-steel", "function": "Columns that carry the module stack, each affixed to the Base Plate Assembly and capped with an M3 nut" }, { "part": "Through-hole spacers, aluminium, 15.24 mm x 6.0 mm OD (x16)", "material": "Aluminium (alloy not stated)", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "M3 Aluminum Thru-Hole Spacer, 15.24mm x 6.0mm OD", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html", "profile": "aluminium", "mid": "aluminium", "function": "Spacer between adjacent modules on the rods", "specs": [ { "label": "Mass each", "value": "0.8 g", "quote": "15.24mm x 6.0mm OD 16 0.8", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html" } ] }, { "part": "Through-hole spacers, aluminium, 24 mm x 6.0 mm OD (x4)", "material": "Aluminium (alloy not stated)", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "M3 Aluminum Thru-Hole Spacer, 24mm x 6.0mm OD", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html", "profile": "aluminium", "mid": "aluminium", "function": "Longer spacer between modules", "specs": [ { "label": "Mass each", "value": "1.3 g", "quote": "24mm x 6.0mm OD 4 1.3", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html" } ] }, { "part": "M3 stainless nuts (x5) and split washers (x5)", "material": "Stainless steel (grade not stated)", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "M3 SST Nut", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html", "profile": null, "mid": "stainless-steel", "function": "Cap the rods and keep the stack in compression", "specs": [ { "label": "Washers", "value": "M3 SST split washer, 5 per kit, 0.1 g each", "quote": "M3 SST Split Washer 5 0.1", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html" } ] }, { "part": "M3x5 mm flat Phillips screws (x5) and M2.5x6 mm pan Phillips screws (x5), stainless", "material": "Stainless steel (grade not stated)", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "M3x5mm SST Flat Phillips Screw", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html", "profile": null, "mid": "stainless-steel", "function": "Kit screws; M2.5 screws come with M2.5 split washers", "specs": [ { "label": "M2.5 screw", "value": "M2.5x6mm SST pan Phillips screw, 5 per kit, 0.4 g each", "quote": "M2.5x6mm SST Pan Phillips Screw 5 0.4", "source_url": "https://www.pumpkinspace.com/store/p33/Rod_%26_Spacer_Kit.html" } ] }, { "part": "Midplane Standoffs A, B, C, D and four M3x5 mm screws", "material": "Aluminium 7075-T6, hard anodized MIL-A-8625F", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Each Midplane Standoff kit includes four unique Midplane Standoffs labeled", "source_url": "https://www.cubesatkit.com/docs/datasheet/DS_CSK_Midplane_Standoff_711-00331-B.pdf", "profile": "aluminium-7075", "mid": "aluminium-7075", "function": "Four unique standoffs that tie the rod columns to the chassis; kit mass 4 g", "specs": [ { "label": "Height", "value": "5.0 mm (rod or screw passes through this dimension)", "quote": "Height 5.0 mm", "source_url": "https://www.cubesatkit.com/docs/datasheet/DS_CSK_Midplane_Standoff_711-00331-B.pdf" }, { "label": "Hole sizes", "value": "M3 threaded mounting hole; 3 mm through hole", "quote": "Through hole For threaded rod or cap / button- head machine screw", "source_url": "https://www.cubesatkit.com/docs/datasheet/DS_CSK_Midplane_Standoff_711-00331-B.pdf" }, { "label": "Screws", "value": "four M3x5mm stainless-steel flat-head machine screws", "quote": "four M3x5mm stainless-steel flat-head machine screws", "source_url": "https://www.cubesatkit.com/docs/datasheet/DS_CSK_Midplane_Standoff_711-00331-B.pdf" } ] } ] }, { "assembly": "Remove-before-flight and switches", "parts": [ { "part": "RBF Bracket Kit (P/N 711-00330)", "material": "Al 5052-H32", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Precision constructed from Al 5052-H32 and plated according to the CubeSat Design Specification (CDS), this bracket", "source_url": "https://www.pumpkinspace.com/store/p35/Remove-Before-Flight_%28RBF%29_Bracket_Kit.html", "profile": "aluminium-5052", "mid": "aluminium-5052", "function": "Guides the RBF pin and supports the external power and USB connectors when the motherboard sits higher in a 1.5U, 2U or 3U chassis", "specs": [ { "label": "Fastening", "value": "two external M3 screws to the chassis walls", "quote": "The RBF bracket is then secured to the Chassis Walls via two external M3 screws", "source_url": "https://www.pumpkinspace.com/store/p35/Remove-Before-Flight_%28RBF%29_Bracket_Kit.html" } ] }, { "part": "RBF pin and lanyard (P/N 710-00300)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "This pin engages the Remove-Before-Flight (RBF) pin of the CubeSat Kit.", "source_url": "https://www.pumpkinspace.com/store/p106/Remove-Before-Flight_%28RBF%29_Pin_and_Lanyard.html", "profile": null, "mid": null, "function": "Engages the remove-before-flight pin of the CubeSat Kit", "specs": [ { "label": "Mass", "value": "17 g", "quote": "Mass = 17g.", "source_url": "https://www.pumpkinspace.com/store/p106/Remove-Before-Flight_%28RBF%29_Pin_and_Lanyard.html" } ] }, { "part": "Configurable RBF and launch switches", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Configurable Remove-Before-Flight (RBF) and Launch switches rated at 10A each.", "source_url": "https://www.cubesatkit.com/docs/cubesatkitflyer.pdf", "profile": null, "mid": null, "function": "Switches on the motherboard, rated 10 A each, with C, NC and NO contacts" } ] }, { "assembly": "Solar panel mounting and panels", "parts": [ { "part": "Solar Panel Clips Set (P/N 711-00346, 7 + 1 clips)", "material": "Stainless steel, 0.5 mm precision-bent (grade not stated)", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "7 + 1 clips hold solar panels to all six sides of the CubeSat Kit", "source_url": "https://www.cubesatkit.com/docs/datasheet/DS_CSK_Solar_Panel_Clips_711-00346-A.pdf", "profile": null, "mid": "stainless-steel", "function": "Hold solar panels to all six sides without extra fasteners; each clip sits between a plate and a foot", "specs": [ { "label": "Net mass added", "value": "+9 g", "quote": "Net increase in mass of CubeSat Kit +9 g", "source_url": "https://www.cubesatkit.com/docs/datasheet/DS_CSK_Solar_Panel_Clips_711-00346-A.pdf" }, { "label": "Operating temperature", "value": "-200 to +200 C", "quote": "Operating temperature TA -200 to +200", "source_url": "https://www.cubesatkit.com/docs/datasheet/DS_CSK_Solar_Panel_Clips_711-00346-A.pdf" }, { "label": "Maximum mass per panel", "value": "500 g (safety factor 2)", "quote": "Maximum mass per panel (safety factor = 2)", "source_url": "https://www.cubesatkit.com/docs/datasheet/DS_CSK_Solar_Panel_Clips_711-00346-A.pdf" }, { "label": "Compatible panel thickness", "value": "up to 1.60 mm (0.063 in)", "quote": "Panels of up to this maximum", "source_url": "https://www.cubesatkit.com/docs/datasheet/DS_CSK_Solar_Panel_Clips_711-00346-A.pdf" }, { "label": "Clip set sizes", "value": "0.062 in/1.6 mm and 0.031 in/0.8 mm panels", "quote": "Clips are available for 0.062\"/1.6mm and 0.031\"/0.8mm thick solar panels.", "source_url": "https://www.pumpkinspace.com/store/p157/Solar_Panel_Clips_Set_%28Set_of_8_clips%29.html" } ] }, { "part": "Payload Panel Clips Kit (P/N 711-0406)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "Payload Panel Clips Kit (4/8) 711-0406 4g", "source_url": "https://www.cubesatkit.com/docs/cubesatkitsystemchart.pdf", "profile": null, "mid": null, "function": "Clips for panels on an external payload section" }, { "part": "Fixed solar panels (1U to 3U), 0.8 mm thick", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "0.031in/0.8mm thick fixed solar panels for CubeSat Kit", "source_url": "https://www.pumpkinspace.com/store/p154/CubeSat_Kit%E2%84%A2_Fixed_Solar_Panels.html", "profile": null, "mid": null, "function": "Pumpkin PMDSAS panels with triple-junction cells; 1U carries 2 cells, 3U carries 7", "specs": [ { "label": "Cells per size", "value": "1U 2, 1.5U 3, 2U 4, 3U 7 large-area triple-junction cells", "quote": "3U; 7 large-area triple-junction solar cells", "source_url": "https://www.pumpkinspace.com/store/p154/CubeSat_Kit%E2%84%A2_Fixed_Solar_Panels.html" }, { "label": "On-orbit record (maker claim)", "value": "over 600 PMDSAS panels, 100% on-orbit success", "quote": "over 600 Pumpkin Modular Deployable Solar Array System (PMDSAS) solar panels have enjoyed a 100% success rate on-orbit", "source_url": "https://www.pumpkinspace.com/store/p154/CubeSat_Kit%E2%84%A2_Fixed_Solar_Panels.html" } ] } ] }, { "assembly": "Dispenser interface (control drawing 810-00252)", "parts": [ { "part": "Spring plungers (x2), stubby, Delrin nose (Vlier SSMD-51A)", "material": "Stainless steel body with Delrin (acetal) nose", "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Vlier", "quote": "2X SST STUBBY SPRING LOADED DELRIN NOSE WITH LOCKING ELEMENT", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf", "profile": null, "mid": "delrin-acetal", "function": "Separation plungers that push against a neighbouring CubeSat in the dispenser", "specs": [ { "label": "Part number and thread", "value": "Vlier SSMD-51A, 8-32 thread", "quote": "VLIER P/N SSMD-51A (8-32 THREAD)", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf" }, { "label": "Initial force", "value": "0.50 lb (225 g)", "quote": "INITIAL FORCE = .50 lbs (225 grams)", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf" }, { "label": "Final force", "value": "1.5 lb (680 g)", "quote": "FINAL FORCE = 1.5 lbs (680 grams)", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf" } ] }, { "part": "Deployment detection switch (1 required)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "DEPLOYMENT DETECTION SWITCH (1 REQUIRED)", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf", "profile": null, "mid": null, "function": "Switch released when the CubeSat leaves the dispenser" }, { "part": "Rails and rail ends", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "RAIL SURACES (8X) AND ENDS OF RAILS (8X) MUST BE ANODIZED (HARD ANODIZE IS PREFERRED)", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf", "profile": null, "mid": null, "function": "Eight rail surfaces and eight rail ends that touch the P-POD must be anodized; edges rounded", "specs": [ { "label": "Edge rounding", "value": "all edges rounded, 1 mm suggested", "quote": "ROUND ALL EDGES (1mm SUGGESTED)", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf" }, { "label": "Rail surface callout", "value": "0.40 um", "quote": "0.40 um", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf" }, { "label": "Minimum rail width", "value": "8.5 mm (typical)", "quote": "8.5 MIN (TYP)", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf" }, { "label": "Final launch weight", "value": "1 kg maximum (drawing, 2003)", "quote": "FINAL LAUNCH WEIGHT: 1 KILOGRAM MAX.", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf" } ] }, { "part": "RBF pin access area and optional data port access areas (8 places)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "OPTIONAL DATA PORT (8 PLACES)", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf", "profile": null, "mid": null, "function": "Access windows on the faces for the RBF pin and umbilical ports" } ] }, { "assembly": "Kit electronics carried in the structure", "parts": [ { "part": "104-pin stackable CubeSat Kit Bus connector", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "104-pin stackable CubeSat Kit Bus connects user modules without wires.", "source_url": "https://www.cubesatkit.com/docs/cubesatkitflyer.pdf", "profile": null, "mid": null, "function": "Wire-free interconnect between modules; accepts up to 5 PC/104-sized user modules", "specs": [ { "label": "Module capacity", "value": "up to 5 PC/104-sized user modules", "quote": "Accepts up to 5 PC/104-sized user modules.", "source_url": "https://www.cubesatkit.com/docs/cubesatkitflyer.pdf" } ] }, { "part": "CubeSat Kit Motherboard (MB)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "CubeSat Kit Motherboard (MB) D 2010 QbX1, QbX2 , Caerus/Mayflower, DICE-1, DICE-2, Aeneas, CINEMA, CSSWE", "source_url": "https://www.cubesatkit.com/content/space.html", "profile": null, "mid": null, "function": "Carries the 104-pin bus and the pluggable processor module; sits on the base plate end" }, { "part": "Pluggable Processor Modules A1, A2, A3 (TI MSP430)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "PPM A1/A2/A3, 7.3728-16MHz: TI's ultra-low-power 16-bit MSP430F1612/1611/2618 MCUs", "source_url": "https://www.cubesatkit.com/docs/cubesatkitflyer.pdf", "profile": null, "mid": null, "function": "16-bit ultra-low-power processor modules" }, { "part": "Pluggable Processor Module B1 (Silicon Labs C8051F120)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "PPM B1, 100MIPS@100MHz: Silicon Labs® 8-bit C8051F120 MCU", "source_url": "https://www.cubesatkit.com/docs/cubesatkitflyer.pdf", "profile": null, "mid": null, "function": "8-bit processor module, 100 MIPS at 100 MHz" }, { "part": "Pluggable Processor Modules D1 and D2 (Microchip PIC24 and dsPIC33)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "PPM D1, 16MIPS@32MHz: Microchip® 16-bit PIC24FJ256GA110 MCU", "source_url": "https://www.cubesatkit.com/docs/cubesatkitflyer.pdf", "profile": null, "mid": null, "function": "16-bit processor modules; D1 16 MIPS at 32 MHz, D2 40 MIPS at 80 MHz", "specs": [ { "label": "PPM D2", "value": "40 MIPS at 80 MHz, Microchip dsPIC33FJ256GP710", "quote": "PPM D2, 40MIPS@80MHz: Microchip® dsPIC33FJ256GP710 DSC", "source_url": "https://www.cubesatkit.com/docs/cubesatkitflyer.pdf" } ] }, { "part": "FM430 Flight Module (Rev C, obsolete)", "material": null, "form": null, "finish": null, "standard": null, "hardware_ref": "Supplier: Pumpkin, Inc.", "quote": "FM430 Flight Module (obsolete, replaced by Motherbard & PPM of your choice )", "source_url": "https://www.cubesatkit.com/content/datasheet.html", "profile": null, "mid": null, "function": "Earlier single-board flight computer; replaced by Motherboard plus a processor module" } ] } ], "materials": [ { "id": "aluminium-5052", "name": "Al 5052-H32", "material_page": "https://spacemushroom.com/profiles/aluminium-5052/" }, { "id": "aluminium-7075", "name": "Aluminium 7075-T6, hard anodized MIL-A-8625F", "material_page": "https://spacemushroom.com/profiles/aluminium-7075/" }, { "id": "stainless-steel", "name": "Stainless steel, 0.5 mm precision-bent (grade not stated)", "material_page": null }, { "id": "stainless-steel-nonmagnetic", "name": "nonmagnetic stainless steel", "material_page": null }, { "id": "aluminium", "name": "Aluminium (alloy not stated)", "material_page": "https://spacemushroom.com/profiles/aluminium/" }, { "id": "delrin-acetal", "name": "Stainless steel body with Delrin (acetal) nose", "material_page": null } ], "standards": [ { "name": "MIL-A-8625F Type III Class 1 (hard anodize, 0.0005-0.0008 in)", "org": "MIL", "used_for": "Aluminium chassis components, feet, midplane standoffs" }, { "name": "MIL-DTL-5541F Type II Class 1A (non-hexavalent chromate, RoHS compliant)", "org": "MIL", "used_for": "Aluminium chassis components (alodyne finish)" }, { "name": "CubeSat Design Specification (CDS)", "org": "other", "used_for": "Surface plating requirement for contact surfaces; Pumpkin drawing 810-00252 is its control drawing" } ], "relations": [ { "type": "built_on", "target": "CubeSat Design Specification (Cal Poly)", "target_slug": null, "note": "Interface standard; plating and dimensions follow it", "quote": "The ability to plate contact surfaces to meet the CubeSat Design Specification (CDS)", "source_url": "https://www.cubesatkit.com/content/structure.html" }, { "type": "built_on", "target": "Cal Poly CubeSat specification drawing (Pumpkin control drawing 810-00252)", "target_slug": null, "note": "Pumpkin's CDS-derived dimensional drawing that the kit conforms to", "quote": "THE CUBESAT KIT CONFORMS TO THE CUBESAT DIMENSIONAL SPECIFICATIONS IN THIS CONTROL DRAWING", "source_url": "https://www.cubesatkit.com/docs/cubesatcontroldrawing.pdf" }, { "type": "built_on", "target": "CubeSat 101 (NASA CSLI guide to the CubeSat standard)", "target_slug": "nasa-cubesat-101", "note": "Reference for the CubeSat Design Specification and P-POD; the guide does not name this product", "quote": "take a look at the CubeSat Design Specification (CDS)", "source_url": "https://www.nasa.gov/wp-content/uploads/2017/03/nasa_csli_cubesat_101_508.pdf" }, { "type": "launched_on", "target": "P-POD (Poly-Picosatellite Orbital Deployer, Cal Poly)", "target_slug": null, "note": "Compatible deployer; total kit length must not exceed 3U when deployed from a P-POD; RAX-2 flew from P-POD 3", "quote": "Total length of CubeSat Kit cannot exceed 3U when deployed from a P-POD.", "source_url": "https://www.cubesatkit.com/docs/cubesatkitsystemchart.pdf" }, { "type": "launched_on", "target": "X-POD (SFL/UTIAS CubeSat deployer)", "target_slug": null, "note": "Delfi-C3 (Pumpkin Rev C 3U structure) was integrated with the X-POD deployers on PSLV-C9", "quote": "SFL/UTIAS provided launch integration services for multiple CubeSats with their X-POD line of CubeSat deployers.", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "launched_on", "target": "RocketPod adapter kit (1U only)", "target_slug": null, "note": "Pumpkin adapter kit compatible only with 1U CubeSat Kits", "quote": "RocketPod™ Adapter Kit is compatible only with 1U CubeSat Kits.", "source_url": "https://www.cubesatkit.com/docs/cubesatkitsystemchart.pdf" }, { "type": "carries", "target": "ISIS Antenna System (AntS)", "target_slug": null, "note": "Dedicated base and cover plates take the third-party AntS deployable antenna", "quote": "made specifically to accommodate the third-party AntS deployable antenna system", "source_url": "https://www.pumpkinspace.com/store/p44/CubeSat_Kit%E2%84%A2_Base_Plate_Assembly_for_AntS_Antenna.html" }, { "type": "part_of", "target": "Libertad-1 (Colombia, 1U, Rev B)", "target_slug": null, "note": "Launched from Baikonur on 17 April 2007; operated 34 days on primary batteries", "quote": "CubeSat Kit 1U structure D 2009 ITU-pSAT1, Caerus/Mayflower , GOLIAT 1 C 2009 HawkSat-1 1 B 2007 Libertad-1", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "HawkSat-1 (1U, Rev C)", "target_slug": null, "note": "Launched from NASA Wallops on 19 May 2009", "quote": "CubeSat Kit 1U structure D 2009 ITU-pSAT1, Caerus/Mayflower , GOLIAT 1 C 2009 HawkSat-1 1 B 2007 Libertad-1", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "ITU-pSAT1 (1U, Rev D)", "target_slug": null, "note": "First Rev D kit launched; PSLV-C14, 23 September 2009", "quote": "CubeSat Kit 1U structure D 2009 ITU-pSAT1, Caerus/Mayflower , GOLIAT 1 C 2009 HawkSat-1 1 B 2007 Libertad-1", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "GOLIAT (Romania, 1U, Rev D skeletonized)", "target_slug": null, "note": "Vega maiden flight, 13 February 2012; reaction wheels built into the chassis walls", "quote": "CubeSat Kit 1U structure D 2009 ITU-pSAT1, Caerus/Mayflower , GOLIAT 1 C 2009 HawkSat-1 1 B 2007 Libertad-1", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "Caerus / Mayflower (payload end, 1U Rev D skeletonized)", "target_slug": null, "note": "Falcon 9, 8 December 2010", "quote": "CubeSat Kit 1U structure D 2009 ITU-pSAT1, Caerus/Mayflower , GOLIAT 1 C 2009 HawkSat-1 1 B 2007 Libertad-1", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "Delfi-C3 (TU Delft, 3U, Rev C)", "target_slug": null, "note": "PSLV-C9, 28 April 2008", "quote": "CubeSat Kit 3U structure D 2010 RAX, RAX-2, CSSWE 1 C 2008 Delfi-C3", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "Radio Aurora Explorer, RAX (3U, Rev D skeletonized)", "target_slug": null, "note": "Minotaur IV, STP-S26, 19 November 2010", "quote": "CubeSat Kit 3U structure D 2010 RAX, RAX-2, CSSWE 1 C 2008 Delfi-C3", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "RAX-2 (3U, Rev D skeletonized)", "target_slug": null, "note": "Delta II with NPP, 28 October 2011; deployed from P-POD 3", "quote": "CubeSat Kit 3U structure D 2010 RAX, RAX-2, CSSWE 1 C 2008 Delfi-C3", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "CSSWE (3U, Rev D solid-wall)", "target_slug": null, "note": "Atlas V, ELaNa VI, 13 September 2012", "quote": "CubeSat Kit 3U structure D 2010 RAX, RAX-2, CSSWE 1 C 2008 Delfi-C3", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "QbX1 and QbX2 (Colony I, MISC 2 carrier)", "target_slug": null, "note": "MISC 2 carrier proves the CubeSat Kit External Payload scheme; Falcon 9, 8 December 2010", "quote": "Pumpkin Space MISC 2 nanosatellite carrier A 2010 QbX1, QbX2, Aeneas", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "Aeneas (Colony I C1B bus, modified MISC 2)", "target_slug": null, "note": "Atlas V, ELaNa VI, 13 September 2012", "quote": "Pumpkin Space MISC 2 nanosatellite carrier A 2010 QbX1, QbX2, Aeneas", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "part_of", "target": "LMRST-Sat (JPL/Stanford 3U)", "target_slug": null, "note": "ADACS Payload Walls plus 1.5U chassis walls were used; flight outcome not stated on the page", "quote": "This configuration was used on the joint JPL/Stanford LMRST-Sat 3U mission.", "source_url": "https://www.pumpkinspace.com/store/p71/ADACS_Payload_Walls_%2F_1U_Chassis_MAI-100%2FMAI-200_Extension.html" }, { "type": "launched_on", "target": "SpaceX Falcon 9 (QbX1, QbX2, Caerus/Mayflower)", "target_slug": "spacex-falcon-9", "note": "Launched 8 December 2010 from Cape Canaveral", "quote": "They were launched on the SpaceX Falcon 9 at 10:43 EST on December 8, 2010 from Cape Canaveral", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "launched_on", "target": "ULA Atlas V, NASA ELaNa VI (CSSWE, CINEMA, Aeneas)", "target_slug": "ula-atlas-v", "note": "Launched 13 September 2012 from Vandenberg; CSSWE flew on a Pumpkin Rev D 3U structure", "quote": "CSSWE was carried on a ULA Atlas V from Vandenberg Air Force Base as part of the NASA ELaNa VI launch", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "launched_on", "target": "Delta II with NPP (RAX-2)", "target_slug": null, "note": "28 October 2011 from Vandenberg", "quote": "RAX was launched from Vandenberg, California on a Delta II rocket with the NPP primary spacecraft on October 28, 2011", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "launched_on", "target": "Minotaur IV, STP-S26 (RAX)", "target_slug": null, "note": "19 November 2010 from Kodiak", "quote": "RAX was launched from Kodiak, Alaska on STP-S26 on a Minotaur IV on November 19, 2010", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "launched_on", "target": "PSLV-C9 (Delfi-C3)", "target_slug": null, "note": "28 April 2008 from Sriharikota", "quote": "launched from the SHAR range of Sriharikota in India on the PSLV-C9 launch vehicle on April 28, 2008", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "launched_on", "target": "PSLV-C14 (ITU-pSAT1)", "target_slug": null, "note": "23 September 2009 from India", "quote": "launched from India on the PSLV-C14 along with three other CubeSats on September 23, 2009", "source_url": "https://www.cubesatkit.com/content/space.html" }, { "type": "launched_on", "target": "Vega maiden flight (GOLIAT)", "target_slug": null, "note": "13 February 2012 from Kourou", "quote": "on the maiden flight of ESA's Vega rocket with the ALMASat-1 primary spacecraft on February 13, 2012", "source_url": "https://www.cubesatkit.com/content/space.html" } ], "not_published": "No part-number-to-material table: the system chart gives Pumpkin part numbers and masses (e.g. 703-xxxxx chassis walls, 711-xxxxx clips kits) but the text layer does not tie numbers to parts reliably, so none are recorded for the chassis. Material notes on the payload drawings are 'SEE NOTES' and the notes are not published. Materials of solar panel clips, base plate assemblies, RBF pin/bracket, spring plungers and the cover plate are not stated. Temper/alloy of the feet and standoffs is given but not of the base plate or clips. The control drawing 810-00252 is the CDS-derived interface drawing (it names a Vlier SSMD-51A spring plunger with Delrin nose), not a Pumpkin part list, so it is not recorded as a Pumpkin part. Alodyne is cited as a finish but no alodyne specification is given on the flyer; the structure page cites MIL-DTL-5541F. More detail: Pumpkin's public pages (the structure page is marked 2000-2013) do not give the Chassis Walls or Pro Chassis Walls masses and dimensions in text; those are in the 'CubeSat Kit Chassis datasheet' PDF that was not reachable from the store pages. The system chart ties part numbers to names in a layout that cannot be read reliably for the five chassis sizes, so chassis part numbers are not recorded (703-00288 to 703-00292 and 703-00243 to 703-00287 appear on the chart). Not stated: rivet material, foot and plunger part numbers beyond the control drawing, hard-anodize thickness per part other than the structure-page MIL-A-8625F callout, solar panel substrate and cell supplier, plating metal for conductive platings, and the Pro chassis mass. Libertad-1 and HawkSat-1 launch vehicles are not named on the In Space page. The control drawing dates from 2003 and still shows a 1 kg limit; the CDS Rev 14.1 limits are in the extra specs. More detail: Pumpkin's public pages (the structure page is marked 2000-2013) do not give the Chassis Walls or Pro Chassis Walls masses and dimensions in text; those are in the 'CubeSat Kit Chassis datasheet' PDF that was not reachable from the store pages. The system chart ties part numbers to names in a layout that cannot be read reliably for the five chassis sizes, so chassis part numbers are not recorded (703-00288 to 703-00292 and 703-00243 to 703-00287 appear on the chart). Not stated: rivet material, foot and plunger part numbers beyond the control drawing, hard-anodize thickness per part other than the structure-page MIL-A-8625F callout, solar panel substrate and cell supplier, plating metal for conductive platings, and the Pro chassis mass. Libertad-1 and HawkSat-1 launch vehicles are not named on the In Space page. The control drawing dates from 2003 and still shows a 1 kg limit; the CDS Rev 14.1 limits are in the extra specs.", "depth": "partial", "photos": [ { "file": "products/context/pumpkin-cubesat-kit-structure-1.jpg", "alt": "RAX-1 CubeSat on a lab bench with grey aluminium rails and dark solar-cell side panels", "long": "RAX-1, a 3U CubeSat built on a Pumpkin CubeSat Kit structure, standing on a lab bench. Grey aluminium rails frame side panels covered in dark solar cells, a green circuit board with four yellow strips sits on top, and a red Remove Before Flight tag hangs at the foot.", "kind": "context", "context": "RAX-1, built on the kit", "credit": "Allison B. Craddock", "license": "CC BY-SA 3.0", "page_url": "https://commons.wikimedia.org/wiki/File:RAX_27Jan2010_011-a.jpg" }, { "file": "products/context/pumpkin-cubesat-kit-structure-2.jpg", "alt": "Delfi-C3 CubeSat on a metal base with a silver frame, gold-coloured clips and dark solar panels", "long": "Delfi-C3, a 3U CubeSat whose structure is based on a Pumpkin CubeSat Kit, in its stowed configuration on a lab bench. It has a silver aluminium frame with gold-coloured clips at the corners, dark solar-cell panels on the sides and a red cover on top.", "kind": "context", "context": "Delfi-C3, built on the kit", "credit": "Pa3weg", "license": "Public domain", "page_url": "https://commons.wikimedia.org/wiki/File:Delfi-C3-Stowed.JPG" }, { "file": "products/context/pumpkin-cubesat-kit-structure-3.jpg", "alt": "Libertad-1 CubeSat on a clear stand in front of the Colombian flag, with green circuit-board side panels", "long": "Libertad-1, Colombia's first satellite, a 1U CubeSat built on a Pumpkin kit, on a clear acrylic stand with green circuit-board side panels.", "kind": "context", "context": "Libertad-1, built on the kit", "credit": "Universidad Sergio Arboleda", "license": "CC BY 3.0", "page_url": "https://commons.wikimedia.org/wiki/File:Pico-satelite_Libertad_1.JPG" }, { "file": "products/context/pumpkin-cubesat-kit-structure-4.jpg", "alt": "RAX-2 CubeSat standing upright on a lab bench with grey rails and four yellow strips on top", "long": "RAX-2, a 3U CubeSat built on a Pumpkin kit, standing on a lab bench with grey aluminium rails, dark solar cells and four yellow strips taped upright on top.", "kind": "context", "context": "RAX-2, built on the kit", "credit": "University of Michigan / Michigan Exploration Lab", "license": "CC BY-SA 3.0", "page_url": "https://commons.wikimedia.org/wiki/File:The_RAX-2_Spacecraft.jpg" }, { "file": "products/context/pumpkin-cubesat-kit-structure-5.jpg", "alt": "CSSWE CubeSat lying on a white plate next to an open P-POD deployer in a clean room", "long": "CSSWE, a 3U CubeSat built on a Pumpkin kit, on a white base plate beside a P-POD deployer just before integration.", "kind": "context", "context": "CSSWE, built on the kit", "credit": "CSSWE at English Wikipedia", "license": "CC BY-SA 3.0", "page_url": "https://commons.wikimedia.org/wiki/File:CSSWE_CubeSat_and_PPOD_prior_to_integration.png" }, { "file": "products/gallery/pumpkin-cubesat-kit-structure-3.jpg", "alt": "Computer render of an open-frame CubeSat from two angles, with green circuit boards, copper rings and silver rails", "kind": "generic", "credit": "Space Travel Blog / Guillaume Le Bonhomme", "license": "CC BY 4.0", "page_url": "https://commons.wikimedia.org/wiki/File:ESTCube-2_internal_structure.jpg", "long": "Two views of a cuboid satellite on a black background, showing a silver truss-like frame around green boards, round silver tubes and orange-copper ring parts." } ], "context": { "size": [ "Under 1U", "1U", "1.5U to 2U", "3U" ] }, "licence": "Product data CC BY 4.0, cite Space Mushroom. Photos keep their own licences, given per photo.", "mcp": "https://spacemushroom.com/mcp" }