Volume 33 Issue 3
Mar.  2018
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Design and dynamic analysis of a flapping wing air vehicle[J]. Journal of Aerospace Power, 2018, 33(3): 703-710. doi: 10.13224/j.cnki.jasp.2018.03.024
Citation: Design and dynamic analysis of a flapping wing air vehicle[J]. Journal of Aerospace Power, 2018, 33(3): 703-710. doi: 10.13224/j.cnki.jasp.2018.03.024

Design and dynamic analysis of a flapping wing air vehicle

doi: 10.13224/j.cnki.jasp.2018.03.024
  • Received Date: 2016-08-10
  • Publish Date: 2018-03-28
  • To improve the design of flapping-wing air vehicles and have a better understanding of their dynamics, a prototype of a bird-like air vehicle with foldable flapping wings was designed, and the dynamics of the prototype was carefully analyzed. First, the flapping mechanism based on crank link was designed, meanwhile the kinematic model of the mechanism was established, and the kinetic equations of the mechanism were deduced via Lagrangian method. Then the estimation model of the aerodynamic forces on the flapping wings was set up using strip theory, and the aerodynamic parameters of both the straight and the foldable flapping wings, under the time symmetric and time asymmetric flapping patterns, were calculated. The results showed that higher lift forces could be obtained when the foldable wings underwent asymmetrical flapping, which was attributed to lower resisted forces during the up-stroke periods of the foldable wings. Finally, with the commercial software package ADAMS, the dynamics forces at the critical linkage positions of the flapping mechanism were simulated, and the results provided a suggestion on strengthening the flapping mechanism.

     

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