Half-module window rotating mechanism applied to supersonic wind tunnel

Abstract

Provided is a half-module window rotating mechanism applied to a supersonic wind tunnel. The half-module window rotating mechanism comprises a drive transmission module, a feedback and measurement module and a rotation module, wherein the drive transmission module is composed of a support, a large cylindrical straight gear, an alternating current servo motor, a reducer, a gear pressing cover, a small cylindrical straight gear, a pressing cover and pressing screws. The feedback and measurement module is composed of a potentionmeter support, a potentionmeter, a pressing sheet, a coupler, a small shaft and a connecting cover. The rotation module is composed of an O-shaped seal ring, a baffle ring, a right bearing cover, a connecting seat, a bearing seat, a conical roller bearing, a left bearing cover and a main shaft. Through adoption of a cylindrical straight gear set, the half-module window rotating mechanism can achieve rotating at +/-360 degrees. The mechanism can be installed integrally in hanging mode. Control accuracy of an attacking angle within a +/-3 deviation range can be achieved due to the fact that the cylindrical straight gear set is matched with a measurement portion with the potentionmeter as the center in drive mode.

Description

technical field [0001] The invention relates to a half-molded window turning mechanism applied to a supersonic wind tunnel, belonging to the field of experimental aerodynamics. Background technique [0002] The half-model test technology is an important wind tunnel test technology, which can better solve the problem of low test Re number and difficulty in realizing the detailed simulation of aircraft shape due to the limitation of the section size of the test section when carrying out the full model test in the test section. And other issues. Most of the wind tunnels at home and abroad usually use the half-mold test system installed on the conventional test section for half-mold tests; some wind tunnels with larger diameters, such as CARDC2. A separately processed half-model test section is used, and the larger half-model is installed in the test section for aerodynamic tests. The swivel window mechanism is the core mechanism of the half-mold test system (or half-mold test...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a half-mould window turning mechanism applied to supersonic wind tunnels, so as to solve the difficulty in processing and high cost of the existing mechanism using a worm gear pair with a large center distance, and it is difficult to realize circular rotation And the problem that the overall hoisting cannot be realized, the installation and disassembly are inconvenient, and the test efficiency is low

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