Model bracket attack angle mechanism

Abstract

The invention relates to a model bracket attack angle mechanism. The model bracket attack angle mechanism comprises a controller, a servo motor, an upper transmission shaft, a lower transmission shaft, a water-cooling speed reducer and an angle sensor, wherein the controller drives the servo motor to rotate; the water-cooling speed reducer is used for decelerating, so that the lower transmission shaft drives the model bracket to rotate; the angle sensor is used for timely feeding back an angle signal to the controller to form closed-loop feedback; and the model bracket can be driven to rotateunder multiple attack angle conditions, and attack angle rotation speed can be changed. The model bracket attack angle mechanism can precisely control a rotation angle of a model bracket to obtain anattack angle needed in a test process, calculates a corresponding attack angle angle according to needed test conditions, is more flexible to regulate, and conveniently changes attack angles at any time in a test process. According to the high hot gas flow characteristic, a special water-cooling structure is arranged, so that the cooling effect is guaranteed while interferences on model temperature measuring are avoided.

Description

technical field [0001] The invention relates to an attack angle mechanism of a model support, in particular to an attack angle mechanism used in ground simulation tests of thermal protection of aerospace vehicles, which can quickly and accurately change the attack angle of the model support in a high-temperature environment. Background technique [0002] When the anti-insulation material of aerospace vehicles is used for thermal protection ground simulation tests, the high-temperature airflow is usually used to heat the test model in the model bracket, and the model bracket is driven by the angle of attack mechanism to obtain different heating conditions for the test model by changing the angle of attack. The conventional angle-of-attack mechanism uses the cylinder as the moving part, which has the advantages of rapid rotation and large rotational torque, but it can only rotate quickly and quickly under the conditions of two preset angles of attack, and neither can obtain mor...

AI Technical Summary

Problems solved by technology

The conventional angle-of-attack mechanism uses the cylinder as the moving part, which has the advantages of rapid rotation and large rotational torque, but it can only rotate quickly and quickly under the conditions of two preset angles of attack, and neither can obtain more angles of attack conditions nor Change the speed of the angle of attack rotation, so it is necessary to design an attack angle mechanism that can drive the model support to rotate under multiple angles of attack and the speed of the angle of attack rotation can be changed, while preventing the damage of high-temperature airflow

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