| Waverider is a "ride" on the shock wave Hypersonic aircraft,high lift,low resistance and high resistance characteristics,through the study of optimized Waverider is expected to exceed "lift to drag ratio barrier" to achieve better aerodynamic layout scheme.Hypersonic aircraft Waverider design and research has become one of the hot topics in the field of Aeronautics and Astronautics,each discipline will be Waverider as the latest aerodynamic configuration of hypersonic aircraft vehicle models.First details on Waverider research experience and development,by analyzing the flow field generated by the advantages and disadvantages of the wave,generation Waverider model for flow field is obtained.Choose Mach Ma=6 Cone as the base flow,using four-order Runge-Kutta method to calculate control equation Taylor-Maccoll equation has been derived from cone flow shock wave angle and field flow equation,through the free flow of the selected surface equations intersect with the conical shock wave equation are leading edge,using inverse design method for establishing mathematical model of the Waverider.In analysis application calculation fluid mechanics on took wave body the parameter effect of based Shang,through numerical simulation calculation out design points of took wave body pneumatic characteristics and non-design points at took wave body pneumatic characteristics with Mach number,and welcome angle of changes law,get design points at meet took wave body stable flight of speed range,and proved has paper by with anti-design method theory of correctness.Studies show that lift to drag ratio of Waverider with angle and Mach number increases and the growth rate became smaller and eventually lift to drag ratio steady;Waverider flight altitude of aerodynamic characteristics with no apparent impact of Mach Ma=6 stability of cone-derived Waverider flight speed range is Ma=4.8~6.3.Finally front the Waverider passivation,mesh boundary layer theory,analysis ofdifferent passivation radius Waverider in the design of aerodynamic characteristics as well as non-design point to Mach number,angle change impact on aerodynamic performance of a Waverider,be Waverider front surface maximum temperature;While the aerodynamic performance,pneumatic volume factors such as heat and radius of optimum passive programmers.Studies have shown that passivation of Waverider in the front lift-drag ratio varies with angle and speed increases;increasing Mach number had no obvious effect on aerodynamic characteristics;Waverider passivated surface maximum temperature is about 1800 K the front tip,leading edge passivation radius of 9mm for the best. |
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