Responsible Engineers: Emily Albornoz, Hermanus Jacobs, Jacky Zheng, Cruz
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Soto
Previous
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Work:
Phoenix: Sustainer - Avionics Bay Structures, Booster - Avionics Bay Structures
Hermes III: November 24, 2019 Shake Test, Hermes III Avionics Tower Force Testing, Hermes 3 Reaction Wheel Proposal, Hermes III Payload Bulkhead
Notes (2/19/23):
Spring 2022
03/22/2023 - Updates from Concept Design Review
- We need to replace the uneven rods with spacers to maintain uniform distancing
- Replace all polycarbonate with G10 fiberglass
- Now that the piston has been chosen, the top bulkhead will be made out of metal
- All avionics decisions, sizing, and placement will no longer be made by the listed R.E.'s
03/05/2023 - Basic Design and Concept Design
- Finalized the switchband system and list of materials
- Presentation for Concept Design Review here
02/19/2023 - Preliminary Research
- To do:Look into commercial vibrational testers - Claire
Screw terminal loose – was this the cause of avionics turning on? → Talk to avionics
Look into reviews of screw switches - Richard
https://www.rocketryforum.com/threads/the-avionics-bay-thread-post-your-photos.156649/
Talk to Avionics about required components for upper and lower avionics towers - Emily
Calculate space above AV tower needed to store parachute - Julianne
Look at and dimension Phoenix booster mission package tube
4 components: parachute area for 1st stage, AV bay, parachute area for 2nd, motor
Start CADing slider AV tower
Researc Research extra forces on AV tower from parachutes, potential buckling
Timeline:
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1st meeting points:
Decide...
how
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many avionics towers, what does the deployment look like
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approximate
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dimensioning, looking into what the mass would be for these systems assuming Phoenix Avionics systems weights and lengths
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Sustainer:
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Length:
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Booster
Weight:
Length:
Need an estimate of board size
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Issue of the bay turning on in transit:
Did the vibration of the system cause the screw to move? If so, we may need better screw switches. This one was highly reviewed by rocketry forum: https://www.csrocketry.com/electronics/missleworks.html
*I need someone to come up with the test and give me commercial vibrational testers
- Incorporating a window for easy access
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packing volume of the lines and prevent potential line entanglement issues.
Mathinline body L=\frac{4V}{\pi D^{2}} - 𝐿=4𝑉/𝜋𝐷^2
LaTeX Math Block anchor V = \frac{w_{parachute}}{\rho_{packing}}
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Sketch of the dual separation, dual deployment mechanism
- Approximate diagram of the system with avionics system (not a schematic)
- Switchband system:
- *CO2 canister would be in place of a charge well. CO
Other Research
- Pomona Liquid Rocket Lab (pg 117+)
- Reinforced, system has a lot of rasberry pis since its for LP, ours will likely be smaller
- Similar to above switchband
- Nosecone bay kits, do we want or need one for GPS, for the pitot tube?
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