Research On Radar Cross Section And Stability & Controllability Of Hypersonic Cruise Vehicle

Hypersonic technical will become the strategetic high land of aeronautics and astronautics fields in 21-th century. Take inspiration engine as dynamic, Hypersonic Cruise Vehicle adopt ride rave body or similar ride rave body. During the long time and long distance cruise phase, vehicle is easy been discover and head off because of lack flexibility. We should obtain better overall cruise capability via adjust aerodynamic layout. For one side, reduce Radar Cross Section of vehicle, improve stealth and survival performance. For other side, make vehicle possess better stability, maneuverability and flexibility, advance against guard performance.This paper aim at stealth, manipulate and stabilization performance. Include server faces as follow:1) Take similar ride rave Hypersonic Cruise Vehicle as theory shape, introduce theory shape scheme briefly; and build parameter model of geometry figure.2) Introduce Radar Cross Section as measure intensity physics of reflect radar wave. Present different high-frequency scattering method confrontation different scatter mechanism, compared the excellent and defect and use area of each method.3) Base on parameter model, adopt Faceting Approach method build scatter object model via partition of grid. We analyze Muti-Scattering of faces each other, and take Back Facet Identity identification and Depth-Buffer Method to deal with shield;4) Calculate the RCS of vehicle when radar shines in different azimuth and pitching. The scattering field of facets and wedges is computed by Physical Optics (PO) and Method of Equivalent Currents (MEC) respectively, And Geometrical Optics (GO) and PO are used to calculate the Multi-Reflection of facets and facets.5) Chose stability and flexibility as measurement of manipulate and stabilization performance of theory shape vehicle, and count those performance in different Mach number.6) An algorithms library for vehicle overall-capability was established, through which we could calculate stealth and survival performance directly, or carry through integral optimization design.After research stealth, manipulate and stabilization performance, we could make integral optimization design of vehicle, improve stealth, manipulate and stabilization and aerodynamic performance, advance survival and against guard performance. Achieve excellent overall-performance.