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Marvin Lin edited this page Aug 10, 2021 · 2 revisions

Repo Structure

  • OreSat.SLDASM
    The complete assembly of OreSat
  • AssemblyJig What we use to hold OreSat on tables/for display
  • Backplane
    The hub which provides power and data to all the boards
  • BatteryCard The assembly that holds the batteries to the card; includes inhibit switches
  • Cameras Parts/subassemblies for the cameras
  • COTS
    Any Commercial-Off-The-Shelf parts -- screws, connectors, et cetera.
  • DebugConnector
    The connector that allows for easy debugging of the satellite
  • Endcap
    The boards that are placed on the +Z and -Z ends of the satellite
  • Endcards
    The cards placed next to the Endcaps; hold the deployable antennas
  • Frames The +X and -X Frames, as well as the Y frames; wedges and triangles
  • GenericCard
    Parts/subassemblies for the generic card; other cards for OreSat
  • LICENSE CERN OHL licensing
  • ReactionWheels The wheels that are located in the center of OreSat and help it spin while in orbit
  • Solar
    _Solar panel boards
  • VibrationJig
    The fixtures that hold OreSat on the vibration table during testing
  • VolumeKeepout
    Solids for quickly checking if we conform to the CDS, by checking for interferences

Terminology

These are just some terms that are relevant to the structure, non-obvious to an MME, or non-standard.

  • The X and Z axes are aligned to the features described below, and the Y axis is oriented to obey the right hand rule. The axes of the top-level assembly follow this convention. This convention matches that of our launch provider.
  • A board is any printed circuit board (PCB).
  • A card a board that slides into the rack structure of the satellite.
  • An endcap is a board that is screwed onto one of the +/-Z faces.
  • An endcard is a card that slides in under the +Z EndCap or above the -Z EndCap.
  • Rack and structure both refer to the assembly of aluminum frames to which all the boards mount.
  • The sides are the +/-Y components of the rack. They have the slots that the cards slide into.
  • The -X side is the location of the backplane, while the +X side is placed on last, acting somewhat like a lid
  • The backplane is the long board that sits on the -X face of the satellite. It transfers power, data, and RF between the boards.
  • The turnstile antenna is the four-pronged antenna on the -Z face of the satellite. It provides an omnidirectional, low-data-rate signal to the ground.
  • The helical or high gain antenna is the spiral, single-pronged antenna on the +Z face of the satellite. It's the narrow-beam, high-data-rate antenna the satellite uses for transmitting video.
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