オートローテーションを利用したドローン用急降下抑制機構開発に向けた研究

抄録

Our goal of this study is to develop a soft-landing device using autorotation for a drone. Recent studies are introduced in this paper. At first, we perform motion analysis of autorotating propeller and examine the effect of mass or solidity on terminal velocity. Next, terminal velocity of autorotating propeller is measured by hot-wire anemometer and evaluate the influence of the number of blades on the velocity. Finally, smoke-wire system with light source device using laser diode has been developed to visualize flowfield. To evaluate performance of the developed system, flow visualization around a reduced car model is compared to streamlines around that obtained in CFD.