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    초록·키워드

    It is well known to the aerospace engineering community that aerodynamic drag and heating are extremely critical issues at hyper velocities. Directed Energy Air Spike (DEAS) is a method to deposit a small amount of energy in the flow ahead of a blunt body and to reduce the drag and the heating. The hypersonic flow at M=7 past the blunt body is investigated numerically. The axis-symmetric bodies are studied. The compressible Navier-Stokes Equations are solved by the AUSM-DV scheme. The effects of heat addition and its location are of a particular interest in the present calculation. And the computational results show that optimum amount and location of the heat addition could be determined aerodynamically. The present calculations also confirm that DEAS is a very effective method for the drag and heat transfer reduction at hypersonic speeds.

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