You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 8 Next »

Responsible Engineers: Emily, Hermanus, Jacky, Cruz, Julianne H.

Previous Research:

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):

  • Look into commercial vibrational testers - Claire

  • Screw terminal loose – was this the cause of avionics turning on? → Talk to avionics

  • 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 extra forces on AV tower from parachutes, potential buckling

Timeline:

  • 1st meeting points:

    • How many avionics towers, what does the deployment look like (probably won't be decided) *Assigned

    • Approximate dimensioning, looking into what the mass would be for these systems assuming Phoenix Avionics systems weights and lengths *Assigned

      • Sustainer:

        • Weight:

        • Length:

      • Booster

        • Weight:

        • Length:

    • *Need an estimate of board size from avionics

  • 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
  • *Calculations for bay sizing
  • packing volume of the lines and prevent potential line entanglement issues.
  • L=\frac{4V}{\pi D^{2}} 
  • 𝐿=4𝑉/𝜋𝐷^2
  • (1) V = \frac{w_{parachute}}{\rho_{packing}}


  • 𝑉=𝑃𝑎𝑟𝑎𝑐ℎ𝑢𝑡𝑒 𝑤𝑒𝑖𝑔ℎ𝑡/𝑃𝑎𝑐𝑘𝑖𝑛𝑔 𝑑𝑒𝑛𝑠𝑖𝑡𝑦

Dual Separation & Dual Deployment

  • Approximate diagram of the system with avionics system (not a schematic)
  • Switchband system: 
  • Inside view of the electronics bay showing the altimeters and switches.
  • *CO2 canister would be in place of a charge well. CO
  • 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?

 

  • No labels