Opening-type wind tunnel model test support device

Abstract

The present invention provides an opening-type wind tunnel model test support device, belonging to the technical field of wind tunnel tests. The support device employs a 'link rod' mechanism, and independent motion of each support arm achieves angle and displacement control. The whole set of system employs hydraulic position servo and is formed by a Z-directional mechanism and a variable angle mechanism. The Z-directional mechanism is formed by a pedestal, a support, a hydraulic cylinder, a pulley and a guide rail, and the hydraulic cylinder achieves Z-direction displacement through guidance push of the pulley by the guide rail. The variable angle mechanism is formed by a model support rod, a fixing support arm, three movable support arms, six dual-action single-pole piston hydraulic cylinders, and can achieve conversion of a pitch angle and a yaw angle. Through correlated effects and mutual monitoring of four subsystems, the opening-type wind tunnel model test support device is high in control system anti-interference capability, can greatly improve the precision and the reliability of the monitoring system, is free and flexible in set of control parameters and can meet the various control requirements.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel tests, in particular to an open-type wind tunnel model test support device. Background technique [0002] During the wind tunnel model test, the support device supports the model in the wind tunnel, and changes the attitude angle of the model through the angle mechanism, that is, the angle of attack, sideslip angle or roll angle of the model. The structural forms of the support devices are various and the complexity varies. Different wind tunnels have their own characteristic support devices. Tail braces, belly braces, tension wires and other support methods are commonly used in conventional force measurement tests of wind tunnel models. The requirements for the support system in the wind tunnel model test are that the support system must have sufficient rigidity and strength; there is a mechanism to change the attitude angle of the model, and the angle or position control accuracy is high; t...

AI Technical Summary

Problems solved by technology

[0003] For most wind tunnel tests, the tail support device and the belly support device are two different devices. According to the different test tasks, different support devices are selected, and the replacement process is cumbersome.

For an open wind tunnel, the distance between the center of the wind tunnel and the ground is relatively high (this device is aimed at a distance of 10m from the center of the wind tunnel to the ground). The wind tunnel center is designed, the structure is very complex, and the area is relatively large

Images