Method for reducing heat of hypersonic velocity aircraft based on shock wave control

Abstract

The invention discloses a method for reducing heat of a hypersonic velocity aircraft based on shock wave control, and relates to the fields of flowing control of hydromechanics and plasma physical application. The method comprises the following steps of using a high-pressure gas source gas spraying device or a plasma synthesizing flow jetting device to control shock waves in a hypersonic velocity aircraft flow field, lifting the leading head shock wave of the hypersonic velocity aircraft, and eliminating the leading shock of side wings, or producing reciprocating swinging, so as to eliminate or control the shock wave disturbance area, reduce the heat flow in key periods and key areas, and realize the heat protection of the aircraft. The method has the advantages that by adopting the outer flow field control type, the root produced by high heat flow is prevented or controlled, and the heat reducing and protection can be realized by reducing the production of heat flow in source; compared with the traditional method of performing passive heat protection on the cause of high heat flow, the material revolution is realized, and a new active heat protection control technique is realized.

Description

technical field [0001] The invention relates to the field of fluid mechanics flow control and the application field of plasma physics. It is a method for reducing heat of a hypersonic aircraft based on shock wave control, which can effectively reduce the difficulty of designing the thermal structure of the hypersonic aircraft and the thickness of thermal protection, and improve the hypersonic speed. overall aircraft performance. Background technique [0002] Hypersonic vehicle technology is a new commanding height in the field of aerospace technology in the 21st century. It is the third epoch-making milestone in the history of human aerospace after the invention of aircraft and breaking the sound barrier. It will also open up a new way for humans to enter space. Hypersonic aircraft has the characteristics of long flight distance, strong maneuverability, and high penetration probability. It can obtain the ability to ensure space entry, effective use of space, and space contro...

AI Technical Summary

Problems solved by technology

[0006] However, hypersonic vehicles have to fly in the atmosphere for a long time. Different from the short-term high-heat environment reentry conditions of traditional ballistic strategic warheads, the thermal environment of hypersonic vehicles is characterized by long-term, high enthalpy, and medium / low heat flow. The total heating capacity of the thermal structure is greater, and the requirements for long-term high temperature resistance / ablation resistance are more stringent. If you do not use new technologies to improve the thermal environment and unilaterally use extreme design methods to continuously thin the heat-resistant layer, not only can you discover Potential is limited, and it will also seriously affect flight safety

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