An optimization method for an Ma4～4.5 cruise waverider

A Mach 4～4.5 cruise optimized waverider configuration derived from conical flow field is presented.The optimization method of multi-parameter and integrated object function is applied in the design routine.The optimization routine starts from an arbitrary configuration.The optimization method has proven to be effective.The results show that the aerodynamic performance can satisfactorily be attained for Ma4～4.5 cruise aircraft by waverider method.It is demonstrated that a proper object function is a decisive factor in the optimization design procedure.Reynolds number also has a remarkable effect on the results.Low speed performance,stability and control characteristics are of importance in object function.The requirement for high lift-drag ratio always drives the solution toward plan shock.On the other hand,the requirement for stability tends to conical solution.The final result lies on the compromise between the two solutions.