This study investigates the influence of surface distribution of the basic flowfield on the shapes and performances of the osculating axisymmetric waveriders. First, the design method of osculating axisymmetric waverider has been proposed, and the numerical simulation method is used to verify the correctness of the design method. Second, three axisymmetric basic flowfields having different surface pressure distribution but identical shock waves are designed. And then three osculating axisymmetric waveriders are generated from the above basic flowfields, namely, decreasing-pressure, constant-pressure, and increasing-pressure osculating axisymmetric waveriders. The numerical simulation results indicate that the surface pressure distributions of the three osculating axisymmetric waveriders along the stream direction are similar to the surface pressure distribution of their basic flowfields, which verified the correctness of the design theory of the osculating axisymmetric waverider. The shape differences between the three waveriders are compared. Finally, the numerical simulation method is employed to analyze the aerodynamic performances of the three osculating axisymmetric waveriders. The obtained results show that the surface pressure distribution of basic flowfield has great influence on the shape and performance of the osculating axisymmetric waveriders. The osculating axisymmetric waverider generated from the basic flowfield having increasing surface pressure distribution has lower lift-to-drag ratio and larger volume. In contrast, the osculating axisymmetric waverider generated from the basic flowfield having decreasing surface pressure distribution has higher lift-to-drag ratio and smaller volume.
Influence of Surface Pressure Distribution of Basic Flowfield on Osculating Axisymmetric Waverider
AIAA Journal ; 57 , 10 ; 4560-4568
2019-08-09
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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