What is it about?
Unmanned aerial vehicle, wind test, control system
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Photo by Isaac Benhesed on Unsplash
Why is it important?
Attitude, speed, and position of unmanned aerial vehicles are susceptible to wind disturbance. The types, characteristics, and mathematical models of the wind, which have great influence on unmanned aerial vehicle in the low-altitude environment, are summarized, including the constant wind, turbulent flow, many kinds of wind shear, and the propeller vortex. Combined with the mathematical model of the unmanned aerial vehicle, the mechanism of unmanned aerial vehicle movement in the wind field is illustrated from three different kinds of viewpoints including velocity viewpoint, force viewpoint, and energy viewpoint. Some simulation tests have been implemented to show the effects of different kinds of wind on unmanned aerial vehicle’s path and flight states. Finally, some proposals are presented to tell reader in which condition, which wind model should be added to simulation, and how to enhance the stability of unmanned aerial vehicle for different kinds of wind fields.
Perspectives
Due to their low flight speed, light takeoff weight, and small size, UAV are more susceptible to wind disturbance than the manned aircrafts. To deal with different kinds of the wind field, the results and contributions are as follows: The winds, which have great influence on UAV in the low-altitude environment, including the constant wind, turbulent flow, many kinds of wind shear, and the propeller vortex are summarized. How these kinds of winds affect the UAV are illustrated from three different viewpoints including velocity viewpoint, force viewpoint, and energy viewpoint. Some simulation results show that constant wind may cause path deviation on UAV; turbulent flow may cause fluctuations on UAV’s states; wind shear are dangerous to UAV; propeller vortex could provide external energy to UAV, but also destructive. Some proposals are presented on how to add reasonable wind fields in simulation tests for controller designing and on how to avoid the negative effects of wind fields.
BOHANG WANG
Nanjing University of Aeronautics and Astronautics
Read the Original
This page is a summary of: An overview of various kinds of wind effects on unmanned aerial vehicle, Measurement and Control, May 2019, SAGE Publications,
DOI: 10.1177/0020294019847688.
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