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A spatial six-degree-of-freedom mechanism for multi-body separation tests in hypersonic wind tunnels

A multi-body separation, hypersonic technology, used in aerodynamic testing, testing of machine/structural components, instruments, etc., can solve the problems that the six degrees of freedom are not completely independent, difficult to have high stiffness, and high motion accuracy, etc. Improved response speed and running accuracy, reduced power and volume, and the effect of a large range of motion

Active Publication Date: 2018-11-06
中国空气动力研究与发展中心超高速空气动力研究所
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of mechanism has a relatively small degree of blockage and can be located in the wind tunnel test section, but the six degrees of freedom of the second type of mechanism are not completely independent, and it is difficult to achieve high stiffness and high motion accuracy

Method used

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  • A spatial six-degree-of-freedom mechanism for multi-body separation tests in hypersonic wind tunnels
  • A spatial six-degree-of-freedom mechanism for multi-body separation tests in hypersonic wind tunnels
  • A spatial six-degree-of-freedom mechanism for multi-body separation tests in hypersonic wind tunnels

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Embodiment Construction

[0041] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0042] Such as figure 1 As shown, the space six-degree-of-freedom mechanism includes Z-direction mechanism 1, X-direction mechanism 2, β Mechanism 3, Y direction mechanism 4, α Agency 5 and gamma Mechanism 6, the six degrees of freedom are layered and connected step by step. In terms of structure, the embedded integration is realized by stacking boxes to ensure that the six degrees of freedom mechanisms can move independently of each other and can be linked together, and It can achieve high stiffness and large range of motion in a limited space. The first stage of the space six-degree-of-freedom mechanism is the Z-direction mechanism 1, and the Z-direction base 7 is fixed on the mounting bracket in the wind tunnel test section; the sixth stage realizes the rolling motion, and the rolling degree of freedom gamma Mechanism 6 is connected with the d...

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Abstract

The invention provides a space six-degrees-of-freedom mechanism used for a hypersonic wind tunnel multi-body separation test. The mechanism comprises Z, X and Y three degrees of freedom straight-line motion mechanisms and [beta], [alpha] and [gamma] three degrees of freedom angular displacement motion mechanisms. The six-degrees-of-freedom are realized layer by layer and are connected step by step, and in terms of structure, embedment integration is achieved by a box stacking mode. A Z-direction mechanism, an X-direction mechanism and a [beta] mechanism are sequentially overlapped from bottom to top, and a Y-direction mechanism and a [alpha] mechanism are in embedded connection from outside to inside. A [gamma] mechanism is fixedly connected with the [alpha] mechanism through a bent blade, and is individually arranged in a wind tunnel flow field. Each of the Z-direction mechanism, the X-direction mechanism and the Y-direction mechanism adopts two driving assemblies in symmetric arrangement, so that the power and the size of a driving motor are effectively reduced, and the overall stability of the mechanism is improved. The [beta] mechanism and the [alpha] mechanism adopt line-to-arc mechanisms for implementation, so that overlapping of traditional three degrees of freedom rotation pairs is prevented, and the mechanism cantilever length is shortened. The structure is compact, the rigidity is good, andsix-degrees-of-freedom movement of high speed, high precision and high bearing capacity is achieved.

Description

technical field [0001] The invention belongs to the technical field of hypersonic wind tunnel tests, and in particular relates to a space six-degree-of-freedom mechanism used for multi-body separation tests in hypersonic wind tunnels. Background technique [0002] The hypersonic wind tunnel multi-body separation test is a simulation test of the safety separation characteristics and aerodynamic characteristics between the main body and the separation body of various hypersonic aircraft in the hypersonic wind tunnel. To carry out wind tunnel multi-body separation test, a set of separation body model mechanism installed inside the wind tunnel and controlled by computer is required to support the separation body test model and provide six degrees of freedom (axial X, normal Y, lateral Z, pitch α, yaw β and roll γ) motion functions. In order to meet the requirements of the multi-body separation test, the separation body model mechanism needs to have a large range of motion, high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/04
CPCG01M9/04
Inventor 林敬周谢志江王雄朱涛宋代平马晓宇孙启志许晓斌刘飞张德炜杨波解福田钟俊李杰毛冰滟吕超
Owner 中国空气动力研究与发展中心超高速空气动力研究所
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