A three-sonic wind tunnel test section expansion angle adjustment mechanism

A three-sonic wind tunnel and adjustment mechanism technology, which is applied in aerodynamic tests, testing of machine/structural components, and measuring devices, etc., can solve the problems of angle turning, large influence of flow field uniformity, etc., and achieve uniformity of air flow. Small, smooth angle change effect
CN103487229BInactive Publication Date: 2016-03-30BEIJING AEROSPACE YISEN WIND TUNNEL ENG TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING AEROSPACE YISEN WIND TUNNEL ENG TECH
Publication Date
2016-03-30
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a trisonics wind tunnel test section expansion angle adjusting mechanism. Two sets of expansion angle adjusting mechanisms are symmetrically arranged along the horizontal plane of the axis of a trisonics wind tunnel test section respectively in an up and down mode. Each set of expansion angle adjusting mechanism comprises an adjusting piece and a lifting mechanism. Each adjusting piece comprises a connection section, a variable angle section and a rigid section, wherein, one end of the connection section is fixedly connected with the trisonics wind tunnel test section, the other end of the connection section is integrally connected with the rigid section through the variable angle section, and the lifting mechanism is connected with the end, away from the variable angle section, of the rigid section and used for lifting the adjusting piece. According to the trisonics wind tunnel test section expansion angle adjusting mechanism, the lifting mechanisms are used for driving the suspension ends of the adjusting pieces to move, so that the variable angle sections of the adjusting pieces elastically deform and are expanded according to a certain angle, the adjusting pieces are in smooth transition from front to rear, turning points and seams do not exist in a wall board, and influences on a flow field of a wind tunnel test section are small.
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Description

technical field

[0001] The invention relates to a mechanism for adjusting the expansion angle of a test section of a three-sonic wind tunnel. Background technique

[0002] The test section is a component for simulating the flight flow field in the wind tunnel and conducting model aerodynamic tests, and is the core of the entire wind tunnel. The test section of the conventional three-sonic wind tunnel is a closed test section, and the test section is smoothly connected with the front nozzle. In order to meet the test requirements, the flow field uniformity of the test section is very high. During the flow process of the air flow in the test section, the boundary layer along the wall gradually thickens, which gradually reduces the effective potential flow section of the air flow, thus causing a gradual decrease in the Mach number and an increase in the static pressure along the axial direction of the test section, affecting the uniformity of the flow field . Experience at ho...

Claims

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