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Aeroelastic Modeling of a Flexible Hybrid FMAV for 3D Controlled Flight

Javaheri, Sajad | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46710 (08)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Pourtakdoust, Hossein
  7. Abstract:
  8. Propulsive efficiency of flapping wings is optimized via a combination of flapping and elastic wing behavior. In this thesis, a complex complete model of flapping air vehicles (FAV) is developed in order to simulate the wing aeroelastic behavior. The resulting model is in the form of a complex set of partial differential equations whose solution is only numerically possible. Using the resulting simulation model, the different flapping behavior of the right and left wings can also be evaluated along with the resulting forces and moments that make the FAV flight realizable. One of the key flight conditions considered in many simulations is that of cruise flight. In order to have a significant symmetric cruising flight condition a pitch control mechanism seemed necessary. This was achieved via two electric fans located at the end of the main body of the FAV whose actuation helped maintain cruising flight. The input voltage to the electric fans are related to their rotational velocity and in turn the square of angular velocity is related to the forces generated by the rotors. This via a voltage controller one can achieve the required forces for pitch control, thus stabilizing the cruise flight under common perturbations
  9. Keywords:
  10. Flapping Wing ; Aeroelasticity ; Microfan ; Flexible Hybrid Flapping Micro Air Vehicle (FMAV)

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