Transverse pressure gradient controlled ride wave forebody and air inlet channel integrated designing method

Abstract

The invention provides a transverse pressure gradient controlled ride wave forebody and air inlet channel integrated designing method and relates to a near space hypersonic flight vehicle. The method comprises the steps of designing a basic flow field required by a two-dimensional air inlet channel; confirming the position where a designed cross section is located; designing projection of front edge capture molded lines in the designed cross section according the working condition requirements and calculating projection distances from front edge points in wedge tangent planes to shock wave points in z-direction; obtaining pressure distribution of compression molded lines at the positions of the wedge tangent planes corresponding to disperse shock wave points; obtaining newly-generated two-dimensional air inlet channel compression molded lines by applying two-dimensional characteristic line method according to calculated pressure distribution; arranging the two-dimensional air inlet channel compression molded lines at the positions of the corresponding front edge capture molded lines to form a complete air inlet channel compression profile, obtaining a ride wave forebody and air inlet channel integrated device after three-dimensional modeling and finishing the transverse pressure gradient controlled ride wave forebody and air inlet channel integrated design. By adopting the method, the device can have high lifting drag characteristic, external flow resistance is reduced while engine thrust is increased.

Description

technical field [0001] The invention relates to a hypersonic vehicle in adjacent space, in particular to an integrated design method of a waverider precursor and an air inlet with controllable lateral pressure gradient. Background technique [0002] The development of near-space vehicles involves national security and the peaceful use of space, and is one of the focuses of the current international competition for space technology, and the research on near-space hypersonic long-range maneuvering vehicles has become the focus of the development of near-space vehicles because of its important strategic significance heavy. World powers represented by the United States and Russia are vigorously promoting their own hypersonic flight development programs ([1] Joseph, M.H, James S.M.Richard C.M., The X-51A Scramjet Engine Flight Demonstration Program, 15th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2008). A large number of studies since th...

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Problems solved by technology

However, so far, researchers have not found an effective method to integrate the waverider precursor with the two-dimensional inlet components, so that the combination of the two can maximize the capture flow

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