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Wind tunnel for multi-body separation dynamics research

A multi-body separation and dynamics technology, which is applied in the field of wind tunnels for multi-body separation dynamics research, can solve the problems of complex buried release separation, cannot meet its requirements, and crisis carrier aircraft safety, etc., and achieves improved total pressure range, The effect of ensuring safety and increasing the simulation range

Inactive Publication Date: 2021-01-29
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology

There are complex multi-body separation aerodynamic interference effects in aircraft-bomb separation and inter-stage separation of aircraft, and they face complex dynamic problems, making their motion characteristics significantly different from those in the free flow field, and extreme situations will endanger the safety of the carrier aircraft
At present, in order to improve the performance of concealment, the new generation of fighters adopts the layout form of embedded weapons, which will face more complicated problems of separation of embedded delivery
Therefore, it is necessary to conduct a wind tunnel simulation test before the flight test, and the existing wind tunnel simulation test cannot meet its requirements

Method used

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  • Wind tunnel for multi-body separation dynamics research

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Embodiment Construction

[0016] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0017] There are two types of wind tunnel test methods: capture trajectory and wind tunnel model drop test. The two methods have their own advantages and disa...

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Abstract

The invention discloses a wind tunnel for multi-body separation dynamics research, which comprises a stabilizing section, a flexible wall spray pipe section, a standing chamber, a test section, a model recovery section, an adjustable two-throat system, a multi-stage ejection system, a standing chamber suction system, a silencing tower system, a subsonic diffusion section, an air source, a first pipeline, a first corner section, a second pipeline, a second corner section, a third corner section, a third pipeline, a fourth corner section, a fourth pipeline, a fifth pipeline and a sixth pipeline.By designing the multi-stage ejector system and the high-precision valve system, the operation total pressure range of a traditional impulse type wind tunnel is widened, the simulation range of the flight height is widened through cooperation of multiple wind tunnel flow field modes, conversion between a direct-current operation mode and a semi-reflux operation mode is achieved by designing the throttle valve system, and the economy of the wind tunnel operation is improved. By designing a model recovery system and arranging a protective net, the safety of a throwing test is ensured.

Description

technical field [0001] The invention belongs to the field of experimental aerodynamics, in particular to a wind tunnel used for multi-body separation dynamics research. Background technique [0002] Whether it is the separation of fighter jets from the weapons they carry, or the separation of aircraft stages, it is necessary to conduct simulation tests on the ground to ensure the safety of their separation. Both aircraft-bomb separation and inter-stage separation of aircraft have complex multi-body separation aerodynamic interference effects, and face complex dynamic problems, making their motion characteristics significantly different from those in free flow fields. Extreme situations will endanger the safety of the carrier aircraft. At present, in order to improve the performance of concealment, the new generation of fighters adopts the layout form of embedded weapons, which will face more complicated problems of separation of embedded delivery. Therefore, it is necessary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/02
CPCG01M9/02
Inventor 董金刚李广良金佳林王帅张晨凯
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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