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Low-damping three-degrees-of-freedom support device based on virtual flight test model

A technology of flight test and support device, which is applied in the direction of measuring device, aerodynamic test, machine/structural component test, etc. It can solve the problems of heavy weight, difficult adjustment of motion range, large damping, etc., and achieve light weight, easy operation and maintenance Convenience, low motion damping effect

Pending Publication Date: 2017-08-11
中国航空工业集团公司哈尔滨空气动力研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional wind tunnel test model support device usually adopts a series mechanism, and the number of degrees of freedom of the mechanism depends on the number of corresponding moving axes and rotating axes, which is heavy, difficult to adjust the range of motion, and large damping

Method used

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  • Low-damping three-degrees-of-freedom support device based on virtual flight test model
  • Low-damping three-degrees-of-freedom support device based on virtual flight test model

Examples

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Embodiment 1

[0019] Such as Figure 1-2 As shown, a low-damping three-degree-of-freedom support device based on a virtual flight test model includes a free-rolling pair 1, a free pitching pair 2, and a free yaw pair 3, and the free-rolling pair 3 is reserved for The installation screw hole connected with the main body of the virtual flight test model, the free rolling motion pair 1 is connected axially with the upper two ends of the free pitching motion pair 2 through a pair of rolling deep groove ball bearings 7, the pair of rolling deep groove ball bearings The bearing 7 is arranged symmetrically in the two ends of the free pitching motion pair 2, and the rolling bearing end cover 5 integrated with the shaft and the rolling bearing adjusting washer 6 are arranged at both ends of the free rolling motion pair 1, which are fixed by screws to ensure The normal rotation of the rolling deep groove ball bearing 7 during the free rolling motion of the model; the radial direction of the free pitc...

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Abstract

The invention relates to a low-damping three-degrees-of-freedom support device based on a virtual flight test model. When the support device is fixedly connected with a virtual flight test model, free coupled rotation of the model in pitch, roll and yaw directions can be realized. In addition, every two of the three degrees of freedom are locked together, and single-degree-of-freedom of the model can be realized. The device mainly comprises a free rolling motion pair, a free pitching motion pair, and a free yawing motion pair. The motion pairs are connected by bearing components to realize free rotation of the attitude angle of the model. The low-damping three-degrees-of-freedom support device of the invention has such advantages as low motion damping, small disturbance to the flow field of a wind tunnel, adjustable movement range, low weight, and convenient operation and maintenance.

Description

technical field [0001] The invention relates to a low-damping three-degree-of-freedom support device based on a virtual flight test model. Background technique [0002] Wind tunnel virtual flight test technology is an advanced wind tunnel test and evaluation technology proposed by the United States at the end of the last century. The characteristic research is carried out in parallel, and the problems existing in the control system are found in the early stage of the research, thereby greatly reducing the risk of flight tests and shortening the development cycle. This technology can safely and effectively evaluate the influence of unsteady aerodynamic force on the flight quality and flight control system of the aircraft, and is known as the bridge between wind tunnel test and flight test. [0003] The virtual flight test requires the model to generate aerodynamic force through the action of the control surface in an angle-free state, and control the attitude of the model to...

Claims

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Application Information

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IPC IPC(8): G01M9/04
CPCG01M9/04Y02T90/00
Inventor 黄丹刘淑丽吴佳莉卜忱刘传辉
Owner 中国航空工业集团公司哈尔滨空气动力研究所
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