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Propulsion PDR

Propulsion PDR. AAE451: Balsa to the Wall Team 2. Ashley Brawner Matt Negilski Neelam Datta Mike Palumbo Xing Huang Chris Selby Jesse Jones Tara Trafton. Presentation Overview. Why a Ducted Fan? Pros Cons Performance Requirements Thrust Weight Power Ducted Fans Electric Motors

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Propulsion PDR

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  1. Propulsion PDR AAE451: Balsa to the Wall Team 2 Ashley Brawner Matt Negilski Neelam Datta Mike Palumbo Xing Huang Chris Selby Jesse Jones Tara Trafton

  2. Presentation Overview • Why a Ducted Fan? • Pros • Cons • Performance Requirements • Thrust • Weight • Power • Ducted Fans • Electric Motors • Batteries • Duct Design • Fuselage Integration

  3. Why a Ducted Fan? • Pros • No Propeller Tip Downwash • Direct Drive • Hand Launch / Belly Landing • Higher Static Thrust • Cons • Duct Profile Drag • Cost of Duct • Capable Motor • High RPM

  4. Performance Requirements • Power Loading 3.0 • Weight Estimate 5.42lb • Power Required 1.8hp ** Preliminary Sizing

  5. Ducted Fan Candidates

  6. Electric Motor Candidates

  7. Electric Motor Data http://www.kontronik.com/index2e.htm

  8. Electric Motor Data Cont’d http://www.kontronik.com/index2e.htm

  9. Electric Motor Data Cont’d http://www.kontronik.com/index2e.htm

  10. Batteries

  11. Motor Kontronik FUN 600–13 Kv = 1300 RPM/V Max Constant Current: 40 A Max # Cells: 30 Max Voltage: 36 V Battery 30 Cells NiMH @ 1.2V/cell Speed Controller Kontronik Jazz 55-10-32 Max Surge Current: 70 A Max # Cells: 32 Weight: 0.08 lbs Propulsion Summary

  12. Propulsion Summary Cont’d • WeMoTec Midi Fan • Fan Dia: 3.5 in • Max RPM: 36,000 • Weight: 0.231 lbs • Performance • Power: 1.8 hp • Static Thrust: 4.86 lbf

  13. Ducted Fan Measurements

  14. Duct Design • Slightly Converging Inlet • 129% of Fan Swept Area • Funnel Air into Fan • Opposite of Turbo Jet • Straight Outlet • 99 % of FSA • Promote Flow • Opposite of Turbo Jet “Ducted Fan Design

  15. Duct Design Cont’d • WeMoTec Midi Fan

  16. Duct Design Cont’d • Duct Measurements ~1 in 2~3 in

  17. Fuselage Integration • Duct Placement • Duct will be integrated on top of fuselage • Promote external boundary layer Ingestion • Less drag than mounting a nacelle • Room for payload below duct

  18. Propulsion Cost Analysis • To Achieve Mission Requirements • Motor $ 150.00 • Batteries $ 90.00 • Ducted Fan $ 75.00 • Materials ~$ 50.00 • Sum $365.00

  19. Questions?

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