Thermal soaring flight of birds and unmanned aerial vehicles

Details Thermal soaring flight of birds and unmanned aerial vehicles Thermal soaring flight of birds and unmanned aerial vehicles

2010-12-02

arxiv.org/abs/1012.0434v1

Zsuzsa \'Akos et al. 2010 Bioinspir. Biomim. 5 045003

Physics

Biological Physics

19 pages, 11 figures

Scientific paper

10.1088/1748-3182/5/4/045003

Thermal soaring saves much energy, but flying large distances in this form represents a great challenge for birds, people and Unmanned Aerial Vehicles (UAVs). The solution is to make use of so-called thermals, which are localized, warmer regions in the atmosphere moving upwards with a speed exceeding the descent rate of birds and planes. Saving energy by exploiting the environment more efficiently is an important possibility for autonomous UAVs as well. Successful control strategies have been developed recently for UAVs in simulations and in real applications. This paper first presents an overview of our knowledge of the soaring flight and strategy of birds, followed by a discussion of control strategies that have been developed for soaring UAVs both in simulations and applications on real platforms. To improve the accuracy of simulation of thermal exploitation strategies we propose a method to take into account the effect of turbulence. Finally we propose a new GPS independent control strategy for exploiting thermal updraft.

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