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Degree of freedom release device of wind tunnel free flight experiment

A release device and a technology of degrees of freedom, applied in measuring devices, aircraft component testing, aerodynamic tests, etc., can solve problems such as difficult installation and debugging, small range of motion, complex structure, etc., to achieve convenient installation and adjustment, and smooth movement Effects with a large range and simple structure

Active Publication Date: 2017-12-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

For the tension type, it cannot realize the degree of freedom of the yaw angle, and the range of motion of the pitch and roll degrees of freedom that can be realized is not large, and then the structure is complicated, and installation and debugging are difficult; The models move together, which has a great influence on the interference of flight experiments

Method used

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  • Degree of freedom release device of wind tunnel free flight experiment
  • Degree of freedom release device of wind tunnel free flight experiment
  • Degree of freedom release device of wind tunnel free flight experiment

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Embodiment Construction

[0037] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0038] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0039] It should be understood that although the terms first, second, third etc. may be used herein to describe various elements, components and / or sections, these elements, components and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component and / or section from another. Thus, a first element, component and / or section discussed below could be termed a second element, component or section without departing from the teachings o...

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Abstract

The invention discloses a degree of freedom release device of a wind tunnel free flight experiment. The degree of freedom release device comprises a supporting rod and a degree of freedom release joint; the supporting rod is fixedly installed at the center of a wind tunnel test experiment platform; the degree of freedom release joint is installed at the center of gravity of the belly of an aircraft model; and the degree of freedom release joint and the aircraft model are fixed together through screws, and then are connected with a supporting base by bearings. With the degree of freedom release device of the wind tunnel free flight experiment of the invention adopted, single-degree of freedom release of rolling, pitching and yawing of the aircraft model in the wind tunnel free flight experiment and two-degree of freedom release of pitch rolling, yaw rolling and pitch yawing of the aircraft model in the wind tunnel free flight experiment can be realized, and the three-degree of freedom release of the aircraft model can be realized, and the release angle of the pitching and rolling ranges from +35 degrees to -35 degrees, and the yawing of the aircraft model can achieve release ranging from +180 degrees to -180 degrees. The degree of freedom release device of thee invention has the advantages of simple structure, capable of realizing of the release of a plurality of kinds of degrees of freedom, small interference and simple installation and adjustment method.

Description

technical field [0001] The invention relates to the technical field of wind tunnel test devices, relates to a degree of freedom release device for free flight experiments in a wind tunnel, and in particular to a device capable of realizing a large-scale three-degree-of-freedom release of an aircraft model, as well as coupling motion of two degrees of freedom and single-degree of freedom release. A device that releases motion with degrees of freedom. Background technique [0002] The wind tunnel free flight test is a comprehensive experimental research technology for the flight dynamics characteristics, flight control system and navigation system verification research of the aircraft in the wind tunnel, which is used to predict the dynamic flight quality, stability characteristics, and efficiency of the flight control system of the aircraft. and navigation system target acquisition and tracking capabilities. The wind tunnel free flight experiment includes a flight control sy...

Claims

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Application Information

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IPC IPC(8): G01M9/00B64F5/60
CPCG01M9/00B64F5/60Y02T90/00
Inventor 史志伟付军泉龚正陈杰王子安魏晨瑶
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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