Recycling rod of wind tunnel free spinning test model
A test model, free technology, applied in the field of wind tunnel test, to achieve the effect of reducing the risk of hook body falling off, reducing the risk of falling off, and having a simple structure
Pending Publication Date: 2018-04-20
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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Problems solved by technology
In order to meet the requirements of the test, including the requirement of tensile strength, the pull rod of the integrated structure generally requires the overall mass to be more than 30 kg. If an operator is asked to hold a tool exceeding 30 kg at any time for operation, it is necessary to recover a tool of tens of kg. model, it is estimated that few operators can complete this work
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[0029] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0030] Such as figure 1 As shown, it is a structural schematic diagram of the present invention, which includes a rod body and a hook body separated from the rod body, and the rod body and the hook body can be separated and connected.
[0031] In the present invention, in order to prevent the hook body from falling off from the rod body under the action of huge pulling force, on the basis of combining the prior art, it is proposed to decompose the force by threaded connection. Therefore, the end of the rod body is provided with a recessed concave platform, and the concave platform matches the shape of the connecting end of the hook body, so that the two can connect the hook body and the rod body together through internal and external threads. The reason why this structure is adopted is that ...
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The invention discloses a recycling rod of a wind tunnel free spinning test model. The recycling rod comprises a rod body and a hook body, wherein the hook body is separated from the rod body; a concave platform is inwards arranged at the end part of the rod body along the axis of the rod body; the connecting end part of the hook body is matched with the structure of the concave platform; the connecting end part of the hook body is connected with the concave platform through internal and external threads; a stretching mechanism is fixedly arranged on the end surface of the connecting end of the rod body; the other end of the stretching mechanism is connected to the hook body; the rod body is a telescopic rod body. The recycling rod disclosed by the invention is simple in whole structure and easy to machine, is capable of overcoming all defects of traditional equipment, is convenient to operate and is very beneficial for test operation.
Description
technical field [0001] The invention relates to the field of wind tunnel tests, in particular to a wind tunnel free spin test model recovery rod. Background technique [0002] In the free spin test carried out in the wind tunnel, the model will be hoisted by the suspension wire rope after it recovers from the spin state and stay in the midair of the wind tunnel test section. For this reason, a recovery rod is needed to pull it out of the wind tunnel. [0003] The earliest recovery rods used a metal wire to tie an iron hook to the end of the bamboo pole. This method has a simple structure, low cost, and is very convenient to operate. However, in the wind tunnel test, the test model is relatively heavy, generally more than tens of kilograms, and the impact force after the model recovers from the tail spin is relatively large, basically the impact force is hundreds of kilograms, so this kind of recovery rod is used to pull it back The problem that often occurs during modeling ...
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IPC IPC(8): G01M9/04
CPCG01M9/04Y02T90/00
Inventor 吴海瀛万琪明江鲲鹏张俊伟张广兴于文涛
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT