纳米飞行器概念设计
摘要
Nano Air Vehicle (NAV) is a new conceptual controllable unmanned air vehicle with dimension less than 7.5 cm, payload greater than 2 grams which can hover and fly at low speed. As one of important parts of Unmanned Aerial Vehicles (UAVs) system, NAV is capable of conducting surveillance, reconnaissance or releasing payload in a narrow space with high values in military and civil application. In this paper, the conception of NAV and recent development of NAV in several institutes are introduced. Successively, the key theories and techniques involved by NAV design are analyzed. Methods aiming at the selection of NAV’s concept are proposed. And the ultra-low Reynolds number aerodynamics and the flow characteristics of rotary-wing concept and flapping-wing concept at ultra-low <italic>Re</italic> are discussed and analyzed. The experimental and computational studies at ultra-low <italic>Re</italic> are reviewed. Furthermore, the application of new materials on NAVs is discussed. Finally, the perspective of applying micro-propulsion and micro-electronics technologies on the design of NAV is discussed.