Abstract: The aerodynamic heating around aerodynamic rudder by local-configuration optimization is reduced to effectively enhance the livability and adaptability of high-Mach-number flight vehicle. The rectifying wedge is an effective means for optimizing the flow and aerodynamic heating characteristics for high Mach number flight vehicle. A numerical method is proposed to investigate the flow and aero-heating characteristics under a configuration of high-Mach-number plate/rudder. The proposed numerical method was used to study the influence of rectifying wedge on the flow structure and aerodynamic heating environment around all-movable rudder and validated through thermal measurement test in shock wave tunnel. The results show that the usage of rectifying wedge contributes to the reduction in both flow speed and aero-heating capability. This could attribute to the reduction effect of rectifying wedge shock wave on flow speed by the speedily expand and separation. Moreover, the aerodynamic heating environment around all-movable rudder within the span width region is found lower with rectifying wedge in general. With the decrease in rectifying wedge angle, all-movable rudder heating environment gets worse. Meanwhile, with the increase in span width, all-movable rudder heating environment gets better.

Key words: all-movablerudder, rectifyingwedge, flowstructure, heatingenvironment, numericalsimulation