飞行器往复式滑翔延时弹道特性

A subsonic "reciprocating gliding-hovering" trajectory scheme is proposed to further extend the flight time of reconnaissance cruise missiles. The extending-time efficiency and characteristics of trajectory scheme are studied. The aerodynamic parameters of flying vehicle are obtained through CFD numerical wind tunnel test, and the fourth-order Adams Moulton algorithm is used to solve the equations of trajectory control of flying vehicle. The difference between the flight times of fliying vehicles in "horizontal-circling" trajectory and "reciprocating gliding-circling" trajectory schemes is compared and analyzed, and the influences of initial velocity and initial trajectory angle on the flight time of "reciprocating gliding-circling" vehicl are further studied. The results show that the reciprocating glide extending-time trajectory scheme of flying vehicle can extend the flight time, and the extending-time efficiency can reach 14.79% relative to the optimal working condition of "horizontal-circling" trajectory. On the premise of the realization of the "reciprocating gliding-circling" trajectory, the initial velocity and initial trajectory angle of flying vehicle have little effect on the flight time of flying vehicle in the "reciprocating gliding-circling" trajectory scheme.