The Tail Wing Attack Uav Overall Optimal Design Method Research

The application of optimization to the conceptual design of aggressive tailless Unmanned Aerial Vehicle (UAV) was researched in this paper.In the first instance, the design layout of tailless UAV has been started, and values for a number of parameters have been estimated. These include takeoff gross weight and fuel weight, thrust-to-weight, engine size, wing loading, the wing and fuselage geometries, the landing gear and control-surface geometries. Base on the conceptual design of UAV, the aerodynamic force parameters of lift and drag characteristics, pitch moment, lateral directional derivatives and portrait directional derivatives, and control derivatives have been confirmed. And then the longitudinal static stability and dynamic stability and control, the lateral directional static stability and dynamic stability and control have been ascertained to the aerodynamic force parameters of UAV .According to the parameters of above, the performance and flight mechanics of the tailless Unmanned Aerial Vehicle has been calculated to find out whether the conceptual design parameters is true or not. These include flight envelope, climbing performance, cruising performance, gliding performance and landing performance.One of major contributions in this research is an application of Concurrent Subspace Optimization (CSSO) to the preliminary design of aggressive tailless Unmanned Aerial Vehicle. Through this method we get the optimal result of the design. The results indicate that such an implementation of the CSSO is quite encouraged. The CSSO algorithm is shown to be efficient design method for complex system in parallel, and can search out better design for mixed continuous/discrete system in very reasonable number of system analysis compared to traditional optimization method.