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Variable incidence scramjet engine outboard cowl

A scramjet and engine technology, which is applied in ramjet engines, mechanical equipment, etc., can solve problems that have not yet been consulted, and achieve the effects of being beneficial to voyage, reducing pressure differential resistance, and reducing shock wave resistance.

Inactive Publication Date: 2009-10-21
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the outer fairing of the engine, especially the research on the configuration design of the outer fairing to improve the aerodynamic performance, no relevant literature or patent has been found.

Method used

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  • Variable incidence scramjet engine outboard cowl
  • Variable incidence scramjet engine outboard cowl
  • Variable incidence scramjet engine outboard cowl

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] like figure 1 As shown, the scramjet outer fairing with variable inclination angle includes side wall 2 and fixed lower wall surface 3, side walls 2 are arranged on both sides of fixed lower wall surface 3, and the rotary shaft arranged on its lip under fixed lower wall surface 3 1 is hingedly connected with an adjustable lower wall surface 4, the adjustable lower wall surface 4 is powered by a driving mechanism to deflect around the rotary shaft 1, and the deflection position of the adjustable lower wall surface 4 is defined by a limit locking mechanism.

[0025] like Figure 5 As shown, the side wall 2 is provided with a guide rail 21, and the adjustable lower wall surface 4 is provided with a sliding guide rod 41 that can slide in the guide rail 21. The lower wall surface 4 and the fixed lower wall surface 3 are connected by a spring-pull device 5, the spring-pull device 5 can eject or pull up the adjustable lower wall surface 4 downwards or upwards, and the spring-...

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PUM

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Abstract

The invention relates to a variable incidence scramjet engine outboard cowl, which comprises side walls and a fixed lower wall surface; two sides of the fixed lower wall surface are provided with the side walls; a turning axle arranged on a lip of the fixed lower wall surface is hinged with an adjustable lower wall surface under the fixed lower wall surface; and the adjustable lower wall surface deflects around the turning axle by the driving of a drive mechanism, and the deflection position of the adjustable lower wall surface is limited by a limiting and locking mechanism. In the variable incidence scramjet engine outboard cowl, the adjustable lower wall surface deflecting around the lip of the fixed lower wall surface is arranged under the fixed lower wall surface, and the change of aeroperformance of an aerocraft is realized by adjusting the incidence of the adjustable lower wall surface, so that the aerocraft obtains the optimal aeroperformance under different flight regimes.

Description

technical field [0001] The invention relates to a technology for configuration design of a hypersonic aircraft with a scramjet engine as a power system, in particular to a high aerodynamic performance outer fairing of a scramjet engine. Background technique [0002] A hypersonic vehicle is one that travels in the atmosphere and across the atmosphere at speeds of Mach 5 or higher. When the aircraft flies at hypersonic speed, the wave resistance and frictional resistance increase sharply, which leads to the increase of aerodynamic resistance and the decrease of engine thrust margin, resulting in a serious thrust-drag matching problem. In order to reduce drag and increase lift, and ensure the overall performance of the aircraft, the fuselage and engine are generally designed with a high degree of integration, that is, the front of the fuselage is integrated with the engine inlet, and the rear of the fuselage is integrated with the exhaust nozzle of the engine. One. [0003] H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K7/10
Inventor 崔凯杨国伟
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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