Integration design method for hypersonic slender body air vehicle and three-dimensional inward rotation air inlet channel

Abstract

The invention discloses an integration design method for a hypersonic slender body air vehicle and a three-dimensional inward rotation air inlet channel, and relates to near space aerocrafts. The method comprises the following steps that a three-dimensional shock wave hook face is designated according to the design requirement; a series of basic flow fields are derived reversely according to the relation between the discrete shock wave curve and the curvature center; a slender waverider vehicle lower surface molded line and the outlet section of the three-dimensional inward rotation air inlet channel are designed, and streamline tracing in the counter flow direction is conducted in the basic flow fields; the two-dimensional projection shape of a lip of the three-dimensional inward rotation air inlet channel is designed, and a three-dimensional configuration of the lip of the three-dimensional inward rotation air inlet channel is obtained according to the shock wave relation; and the hypersonic slender body air vehicle is subjected to geometric construction based on a compression molded face. The performance of an outer waverider vehicle front body and the performance of the three-dimensional inward rotation air inlet channel are simultaneously considered by the generated slender body hypersonic air vehicle and the air inlet channel, the lift drag characteristic is high, full-flow incoming flow capture can be ensured, engine thrust is increased, outflow resistance is reduced, the operation Mach number range of the air inlet channel is widened, and natural transition of an inner waverider part and an outer waverider part is achieved.

Description

technical field [0001] The invention relates to a near-space vehicle, in particular to an integrated design method of a hypersonic slender body vehicle and a three-dimensional inward turning inlet. Background technique [0002] The development of near-space vehicles involves national security and peaceful use of space, and is one of the focuses of the current international competition for space technology. World powers represented by the United States and Russia are vigorously promoting their own hypersonic flight development programs. A large number of studies since the 1960s have fully demonstrated that the integrated design of the aircraft and propulsion system is the key to achieving hypersonic flight, and the core of the integration of the airframe and the propulsion system is the integration of the aircraft and the air intake. Judging from the current research hotspots and trends, the design of the outer waverider aircraft and the research on the three-dimensional shr...

AI Technical Summary

Problems solved by technology

It can be seen that the key problem restricting the overall performance of the hypersonic system at present is the lack of a design method suitable for the integration of the slender body vehicle and the three-dimensional inward turning inlet.

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