Argonia Avionics Components
Overview
Both the booster and sustainer bays will have the same components and layout. Each bay should have a PAL, Blue Raven, Tracki, 2 small PDBs, 2 screw switches
Components
PAL 9K6
Purpose: Parachute deployment, telemetry, stage sep (on booster),
Needs: Pressure, RF transparency (for GPS and telem antennas)
Orientation: Antenna up or down (prefer down)
Size: (Board only): 1.25” x 3.25”
antenna mount sticks from one end, see cad model for exact dimensions. This connector connects to a flexible ~2” cable which connects to the antenna
Antenna: - Assume we will use the detachable stubby antenna (~4” long). We could switch to an external antenna after more testing. Need link/dimensions for stubby antenna
Mounting: holes in 1” x 3” rectangle, 4-40 screws (Same as TM)
Other: Keep usbc port accessible if possible
Model:
Blue Raven
Purpose: Parachute deployment, stage sep, motor ignition, altitude measurement
Needs: Pressure, “Avoid direct sun.”
Orientation: Any
Size: 1.77” x 0.79”
Antenna: None
Mounting: Holes diagonal, spaced 1.15” x 0.15”, 4-40 screws
Model: (Just the Blue Raven Altimeter, not the other files)
Reference:
Tracki Cellular Tracker
Purpose: Backup tracking
Orientation: Doesn’t matter
Size: 1.8x1.6x 0.7in
Reference:
Big Red Bee
Alternate backup tracking, would replace Tracki if there’s no cell service. If it’s complicated to get it to fit in the same space we can probably go without it.
Mounting: 3 screw holes in a 16mm x 370mm rectangle. Screws are something smaller than 4-40
Orientation: Doesn’t matter
Antenna: 7” wire whip, it can bend/go wherever
Model:
PDB Lite
2 Per AV Bay
Purpose: Provide combined power/pyro power to one avionics board, and allow for remote arming/disarming over wifi
Needs: RF transparency (for wifi)
Orientation: Doesn’t matter as long as all screw terminals, buttons, and usbc port are accessible
Size: 43.2mm x 27.9mm (1 battery per board, permanently attached by short wire)
~18mm depth (board to sled only)
Flight Battery (1Ah): https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/734/ASR00012_Web.pdf
Flight Battery size: 50.8mm x 33.5mm x 5.9mm (2.00” x 1.32” x 0.23")
Antenna: Wifi antenna is integrated into the board
Mounting: 2 4-40 screw mounting holes, see cad model
Reference:
Power Distribution Board Manual (sizes are out of date)
Model:
“depth” is the clearance required from the bay structure to the top of the components on each board
Switchboard
2 Per AV Bay
Purpose: Provide combined power/pyro power to one avionics board, and allow for switching using some kind of physical switch
Orientation: Doesn’t matter as long as all screw terminals are accessible
Size: 35.6mm x 21.6mm (1 battery per board, attached via JST connector)
~12mm depth (board to sled only)
Flight Battery (1.25Ah): https://www.digikey.com/en/products/detail/sparkfun-electronics/PRT-18286/14302550
Flight Battery size: 50.8mm x 33.5mm x 5.9mm (2.00” x 1.32” x 0.23")
Mounting: 2 4-40 screw mounting holes, see cad model
Model:
“depth” is the clearance required from the bay structure to the top of the components on each board
Screw Switch
Location: 2 in each bay (1 per PDB)
Purpose: Turn AV on/off
Needs: Access to outside of rocket (will be a hole in airframe)
Size: (ask Owen)
Mounting: 2 screw holes (see CAD)
Model: Hannah found this model, pretty sure it’s right but someone should double check the dimensions
Camera:
TBD but likely something like this:
Location: Only in sustainer
Requirements: The circuit board will need to attach to AV Bay but the lens will need to go flush against the airframe
Pictures
Wiring Diagram
Other Notes
Leave clearance for things that need to fit together!!! (PDBs, threaded rods, etc)
Include places to secure/zip tie wires
Leave at least 10mm clearance from all screw terminals, so there is space for the wires. Leave more space (15mm) if possible
Heatset holes:
0.153” diameter
~5mm deep,
https://www.makertechstore.com/products/heat-set-threaded-inserts-4-40-threads
Preferably don’t bend the antennas
There must be space under the boards, we typically use [list the sizes] spacers
Large spacers: 6mm
Small spacers: 1/16” (we stack at least 2)
See RRC3 Manual for pressure port sizing
Stuff we’re not using
RRC3
Location: In booster
Purpose: Parachute deployment (backup), stage sep
Needs: Pressure
Orientation: Doesn’t matter
Size: 0.925” x 3.92” (23.5mm x 99.5mm)
~18mm depth
Clearance: 1/8” below
Antenna: - None
Mounting: holes in 11/16” x 3 21/32” (17.48mm x 92.84mm) rectangle, 4-40 screws
Other: Wires come out the screw terminal on either end so leave space
Model:
Reference:
Telemega
Location: In sustainer
Purpose: Parachute deployment, telemetry, motor ignition
Needs: Pressure, RF transparency (for GPS and telem antennas)
Orientation: Antenna up or down (prefer down)
Size: (Board only): 1.25” x 3.25”
~16 mm depth
Wire antenna sticks out of one end
Antenna: - 7” wire antenna, attached to end of board
Mounting: holes in 1” x 3” rectangle, 4-40 screws (Same as PAL)
Other:
Model:
Reference:
Original PDB
Location: 1 in each stage
Purpose: Provide power/pyro power to both avionics boards, and allow for remote arming/disarming over wifi
Needs: RF transparency (for wifi)
Orientation: Doesn’t matter as long as all screw terminals, switches, and usbc port are accessible
Size: (Board only): 50mm x 45mm (1.97” x 1.77”)
~18mm depth (board to sled only)
Flight Battery (2Ah): https://cdn-shop.adafruit.com/datasheets/LiIon2000mAh37V.pdf
Flight Battery size: 62mm x 38.5mm x 8.5 mm (2.44” x 1.52” x 0.34”)
Pyro Battery (1Ah): https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/734/ASR00012_Web.pdf
Pyro Battery size: 50.8mm x 33.5mm x 5.9 mm (2.00” x 1.32” x 0.23")
Antenna: Wifi antenna, 31mm x 13mm x 1mm rectangle attached by flexible cable. We usually just tape it on
Mounting: PDB, wifi antenna, and batteries should be mounted on a sled that can slide into the av bay.
Reference:
Power Distribution Board Manual (battery sizes are out of date)
Model: