Abstract
Multirotor unmanned aerial vehicles have been applied to inspections such as wall crack detection and topographical survey. In a multirotor flight, rotors cause aerodynamic interference and change rotor thrust, and additional thrust control is required to compensate for flow interference. Thus, multirotor design considering aerodynamic effect is essential to improve multirotor performance and realize safe flight for future planned applications. In the article, first, we briefly introduce the development history of multirotor aerial vehicles. Second, we show wind tunnel experiment results to understand the effect of rotor-to-rotor flow interference on multirotor control in-flight conditions.
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