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Design Group 2

Design Group 2. Conceptual Design for AME 441 Spring 2004. Kat Donovan - Team Leader Andrew DeBerry Mike Kinder John Mack Jeff Newcamp Andrew Prisbell Nick Schumacher. Group 2 – Ducted Design. G2 – D2. Overview. Aircraft Configuration & Design Drivers Comparison Aircraft CAD Models

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Design Group 2

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  1. Design Group 2 Conceptual Designfor AME 441Spring 2004 Kat Donovan - Team Leader Andrew DeBerry Mike Kinder John Mack Jeff Newcamp Andrew Prisbell Nick Schumacher

  2. Group 2 – Ducted Design G2 – D2

  3. Overview • Aircraft Configuration & Design Drivers • Comparison Aircraft • CAD Models • Spreadsheet Decisions • Airfoil Choice • Engine Selection • Weight & Drag Estimates • Static Stability • Conclusions & Lessons Learned • Design & Build Schedule

  4. Aircraft Configuration (Requirements) • Powered by electric motor • Carry specified payload • Take-off in < 300 feet on grass • Planform area between 400 in2 & 800 in2 • Radio control system with up to 7 channels Design Drivers • Maximize the climb rate • Maximize the level flight speed

  5. Comparison Aircraft * Information from http://www.aerospaceweb.org/aircraft/bomber/yb49/ † Information from http://www.aerospaceweb.org/aircraft/bomber/b2/ ‡ Information from Design and Construction of a Remote Piloted Flying Wing, May 2, 1994

  6. CAD Models Electronics Box Battery Pack (x2) Circuit Card Servo GPS Receiver Modem

  7. CAD Models - Dimensions

  8. Airfoil Choice • NACA 6412 • Low Reynolds Number airfoil • t/c ratio large enough to house internal electronics

  9. Sample Lift Estimation http://www.grc.nasa.gov/WWW/K-12/airplane/foil2.html

  10. Engine Selection: Astro Cobalt 15 • Electric, brushless motor • Runs off 16-cell rechargeable battery pack

  11. Power Estimate

  12. Thrust Estimates

  13. Thrust, Drag, Estimates

  14. Weight & Drag Estimates Aircraft Weights (lbs)

  15. Static Stability

  16. Conclusions & Lessons Learned • Flying wing to maximize rate of climb and level cruise speed • Ducted fan to increase propeller efficiency • Winglets to reduce drag • Tricycle landing wheels to prevent damage during landing • At least 24” separation of modem and GPS to limit interference

  17. Design & Build Schedule 26 February: Present Detailed Design 4 March: Complete Parts List 16 March: Fabrication 6-9 April: Ground Tests 13-22 April: Flight Tests

  18. Group 2: Nick Schumacher Andrew DeBerry Andrew Prisbell Jeff Newcamp Kat Donovan Mike Kinder John Mack Questions?

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