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Airborne Sensing Platform for CIAS

Airborne Sensing Platform for CIAS. Team 5008 Christina Alzona Ben Wagner. CDR Outline. Requirements Propulsion Analysis Airplane Design Construction Final Product. Requirements.

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Airborne Sensing Platform for CIAS

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  1. Airborne Sensing Platform for CIAS Team 5008 Christina Alzona Ben Wagner

  2. CDR Outline • Requirements • Propulsion • Analysis • Airplane Design • Construction • Final Product

  3. Requirements The College of Imaging Arts & Science (CIAS) requested an airborne platform to carry advanced sensing instrumentation and telemetering equipment in surveillance applications with these requirements: Carry a 3lb payload Has a cruise speed 15 – 30 mph Has 1 hour endurance Accommodate 6 in. x 6 in. x 12 in. payload

  4. Payload Distribution Weight Motor = 0.851 lb CIAS Payload = 3 lb Main Battery + Receiver + small battery = 2 lb Winter/Spring Project = 1 lb Tail = 1 lb Fuselage = 2.67 lb Wing = 2.9 lb Cowling = .13 lb Total = ~13.5 lb

  5. Propulsion • AXI 4120/18 Motor • Power: 511 Watts • Max. Efficiency: 86% • RPM/Volt: 510 RPM/V • Weight: 0.7 lb • Propeller: 13”

  6. Battery Power Thunder Power “Dynamic Power” LiPo Electric Flight Pack Rating: 5C Max Avg. DischargeOutput:18.5V Nominal, 8200mAhDimension: 50mm x 305mm x 28mm (772gr)

  7. Old Analysis

  8. New Analysis

  9. C.G. Calculations

  10. Stability Calculations Lh = effective moment arm of horizontal stabilizer Sh = area of horizontal stabilizer c = wing chord S = wing area b = wing span Lv = effective moment arm of vertical stabilizer Sv = area of vertical stabilizer Vv = vertical tail volume coefficient Vh = horizontal tail volume coefficient Designs should have values of (larger meaning more stable): 0.3 < Vh < 0.8 0.015 < Vv < 0.02

  11. Endurance Calculations Team 05009 ran an endurance test using our battery specifications on the Telemaster. According to those tests, the performance expected based off of a 10lb plane is: Range: 80+km (50 miles) (at 26 mph)Endurance: 2 hours; 1 hour, 45 minutes with climb to altitude (1000 ft)(at 20 mph)Max. Rate of Climb: 10 m/s (meaning 90s egress to 1000 ft)Max. Speed: ~72 mphLoiter Speed: ~7 mph Even with a 13.5lb plane, the endurance will still be over an hour.

  12. Static Load Test

  13. Static Load Test (cont.)

  14. Failure Testing Can you see it?

  15. Failure Testing (cont.)

  16. Airplane Design New Design Old Design

  17. Wing Changes... • New Wing • Length: 120 in. • Wing construction: foam core, bass wood spar, laminated with unidirectional carbon and one layer of fiberglass • Dihedral: 13º at wing tips • Wing segment: continuous piece with 2 joined 1 foot wing tips • Old Wing • Length: 96 in. • Wing construction: built up balsa core, fiberglass laminate • Dihedral: 5º from center • Wing segment: 2 piece joined wing

  18. Wing Construction Lots of foam core… Cutting out foam core…

  19. Wing Construction (cont.) More vacuum bagging… Vacuum bagging an 8 foot wing

  20. More Wing Construction Putting wing tips on wing… Cutting out control surfaces…

  21. Fuselage Construction MDF mold much much better Failed foam mold 

  22. Fuselage Construction (cont.) Put both halves of mold together and bondo and sand and paint and sand and paint and sand…

  23. More Fuselage Construction... All fiberglass lay up not so good…but two carbon lay ups are good 

  24. Even more Fuselage Construction Putting two halves together… Customizing bulkheads… Making sure they stay together…

  25. Empennage Construction Tada! A tail is born! Forming the stabilizers…

  26. More Empennage Construction Trust the trusses…

  27. Everything else... Vacuum formed cowling and motor pod Molds for vacuum forming

  28. Final Product

  29. Questions????

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