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Structures

Structures. Winter Term Update. Presentation Overview. Mass & Dimensions Naming Conventions Drill & Thermocouple Access Wiring Conduits Fastener & Platform Analysis G-force dampening Construction Status Future Work. Mass and Dimensions. Structural Mass: 7.653 kg. 58.8 cm. 10 cm.

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Structures

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  1. Structures Winter Term Update

  2. Presentation Overview Mass & Dimensions Naming Conventions Drill & Thermocouple Access Wiring Conduits Fastener & Platform Analysis G-force dampening Construction Status Future Work

  3. Mass and Dimensions Structural Mass: 7.653 kg 58.8 cm 10 cm 11.7 cm 30.9 cm 36.9 cm 51.8 cm

  4. Naming Conventions (1) Lid Outer Shell Payload Canister Nosecone

  5. Naming Conventions (2) Outer Shell Payload Canister Lid

  6. Naming Conventions (3) End Cap Front Cap Platform

  7. Platform Analysis Component Weight 1 cm 5 cm Aluminum Yield = 462 MPa

  8. Fastener Sizing Platform Force Fastener Force 8 Fasteners 5 mm diameter Al 7075-T6

  9. Drill Access Payload Canister Outer Shell 1 cm Solution  Polyimide Plug -150 oC to 482 oC Easily machinable No outgassing Simple

  10. Thermocouple Access Payload Canister Outer Shell 5 mm Solution  Recess Avoids abrasion Remains exposed Simple

  11. Structure Discontinuities Max Strain = 0.22 μm Max Stress = 168.6 MPa

  12. Wiring Conduits 8 mm • 3 Steel Conduits • Data • Power • Ground

  13. G-force Dampening (1) Kinetic Energy – Energy Dampened = Payload Energy Structure Survivability: 30,000 g Battery survivability: 5,000 g

  14. G-force Dampening (2) 18.7 m Result

  15. Construction Status Supplier • Metal Supermarket • $150 • Pickup Saturday • Manufacture • Engineering machine shop • Start Monday morning Components Nosecone Outer shell Payload Canister Platforms Caps

  16. Future Work Construction Dampening method Ductile to Brittle Transition Temperature Vibration analysis Release mechanism refinement Conclusion: Mission will fail due to batteries

  17. Questions?

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