Acta Mechanica Sinica

, Volume 30, Issue 6, pp 828–838 | Cite as

Dynamic flight stability of a model dronefly in vertical flight

  • Chong Shen
  • Mao SunEmail author
Research Paper


The dynamic flight stability of a model dronefly in hovering and upward flight is studied. The method of computational fluid dynamics is used to compute the stability derivatives and the techniques of eigenvalue and eigenvector used to solve the equations of motion. The major finding is as following. Hovering flight of the model dronefly is unstable because of the existence of an unstable longitudinal and an unstable lateral natural mode of motion. Upward flight of the insect is also unstable, and the instability increases as the upward flight speed increases. Inertial force generated by the upward flight velocity coupled with the disturbance in pitching angular velocity is responsible for the enhancement of the instability.


Insect vertical flight Flight stability Natural modes of motion 


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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Institute of Fluid MechanicsBeijing University of Aeronautics & AstronauticsBeijingChina

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