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Srp

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Srp

  1. 1. Coaxial Rotor UAV<br />Jeremy Land<br />McMurry University<br />Physics Department<br />Research Proposal<br />
  2. 2. Single main rotor<br />Use a main rotor to generate lift<br />Tail rotor balances main rotor’s torque<br />
  3. 3. Coaxial<br />Two rotors spinning in opposite directions <br />Compensate each other’s torque<br />No need for tail rotor<br />Aerodynamic symmetry<br />Stable<br />Easier to fly<br />More compact<br />
  4. 4. Early UAVs<br />QH-50C<br />KA-137<br />
  5. 5. Goals<br />To build an RC helicopter capable of stable flight designed with portability in mind.<br />To construct a wireless video system.<br />
  6. 6. Design<br />Cylindrical fuselage<br />Will house electronics, battery, and motors<br />
  7. 7. Bottom rotor<br />Controlled by two servos<br />
  8. 8. Top rotor<br />Linked to mechanical stabilizer<br />
  9. 9. Motor<br />Two DC hobbyist motors<br />
  10. 10.
  11. 11. Rotors response to pitch command<br />
  12. 12. Inertia<br />Rotors<br />
  13. 13. Shaft<br />
  14. 14. Fuselage<br />
  15. 15. Lift<br />Lift<br />Drag<br />Where is the density of air, S is the surface area of the blade, U is the flow velocity, is the lift coefficient, is the drag coefficient, and is the velocity of the rotor blades.<br />
  16. 16. Communication<br />Transmitter<br />2.4 Ghz<br />Receiver<br />Gyro<br />Electronic Speed Control<br />Mixer<br />
  17. 17. Video system<br />Cell phone camera<br />Receiver<br />Transmitter<br />
  18. 18. Schedule<br />
  19. 19. Budget<br />Esky 4 in 1 controller $50<br />2.4ghz transmitter $45<br />Video receiver $35<br />Video transmitter $35<br />Misc. parts $40<br />
  20. 20. Conclusion<br />The practicality of compact UAVs is viable market <br />
  21. 21. References<br />Learn About Coaxial Helicopters. RC Airplane World. Retrieved February 24, 2011, from http://www.rc-airplane-world.com/coaxial-rc-helicopters.html<br />Colin P. Colemen, A Survey of Theoretical and Experimental Axial Rotor Aerodynamic Research<br />http://blog.ericlamb.net/wp-content/uploads/2010/01/apache.jpg<br />http://www.fas.org/man/dod-101/sys/ac/row/ka-50.htm<br />http://www.sergib.agava.ru/russia/kamov/137/ka137_e.htm<br />http://www.gyrodynehelicopters.com/<br />
  22. 22. Questions?<br />

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