Design method and apparatus for diamond type forced transition apparatus of high-speed aircraft

Abstract

The invention provides a design method and apparatus for a diamond type forced transition apparatus of a high-speed aircraft. The design method for the forced transition apparatus comprises the stepsof 1, in a most difficult transition state of a flight condition, determining a mounting position of the forced transition apparatus and a first spanwise width of the forced transition apparatus according to limiting streamline distribution of the wall surface of a forebody inlet of the aircraft and a structure mounting space of the high-speed aircraft; 2, according to a flow field parameter of the wall surface of the forebody inlet of the aircraft, determining the thickness delta max of an enthalpy boundary layer with a maximum section in the mounting position of the forced transition apparatus; and 3, according to the thickness delta max of the enthalpy boundary layer with the maximum section in the mounting position of the forced transition apparatus, determining a size parameter of theforced transition apparatus. By applying the technical scheme, the technical problems of complex structure and difficult machining of the transition apparatus designed by a design method for the forced transition apparatus in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of high-speed aircraft forced transition device design, in particular, relates to a high-speed aircraft diamond-shaped forced transition device design method and device. Background technique [0002] Transition and turbulence are not only important basic aerodynamic issues for high-speed aircraft, but also key technical issues that restrict the development of high-speed aircraft. Boundary layer transition has a crucial impact on the start-up performance and engine performance of the scramjet engine inlet of high-speed aircraft. . For the air-breathing high-speed aircraft with the shape of a small-sized lifting body / waverider, due to the short length of the inlet of the precursor, the flow at the inlet of the inlet cannot be guaranteed to be turbulent in the natural flow state. Install a forced transition device to ensure that the flow at the inlet of the inlet is turbulent. However, the rough unit of the f...

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Problems solved by technology

[0003] The present invention provides a high-speed aircraft diamond-shaped forced transition device design method and device to solve the technical problem of complex structure and difficult processing of the transition device designed by the forced transition device design method in the prior art

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