Gesture adjusting device for model with four degrees of freedom for hypersonic speed pulse wind tunnel

Abstract

The invention provides a gesture adjusting device for a model with four degrees of freedom for a hypersonic speed pulse wind tunnel. The device comprises a fixed bottom plate, a horizontal displacement adjusting mechanism arranged on the fixed bottom plate and axially sliding along the fixed bottom plate, a vertical displacement adjusting mechanism arranged at the upper end of the horizontal displacement adjusting mechanism and moving in the vertical direction, an attack angle displacement adjusting mechanism arranged at the upper end of the vertical displacement adjusting mechanism, moving up and down along with the vertical displacement adjusting mechanism in the vertical direction, and rotating in the vertical direction, and a side sliding angle displacement adjusting mechanism arranged at the upper end of the attack angle displacement adjusting mechanism and rotating horizontally. The upper end of the side sliding angle displacement adjusting mechanism is used for fixing the model. The gesture with four degrees of freedom of the model is adjusted by means of adjusting the horizontal displacement of the model through the horizontal displacement adjusting mechanism, adjusting the vertical displacement of the model through the vertical displacement adjusting mechanism, adjusting the attack angle of the model through the attack angle displacement adjusting mechanism, and adjusting the side sliding angle of the model through the side sliding angle displacement adjusting mechanism.

Description

technical field [0001] The invention relates to the field of wind tunnels, in particular to a four-degree-of-freedom model attitude adjustment device for a hypersonic pulse wind tunnel. Background technique [0002] Hypersonic pulsed wind tunnels are widely used in model experiments of missiles, hypersonic vehicles, and aerospace aircraft, and are very important ground test equipment in the aerospace field. [0003] join figure 1 , a hypersonic pulsed wind tunnel generally includes a nozzle 1, an experimental cabin 2 communicating with the nozzle 1, a diffuser 3 communicating with the experimental cabin 2, and a vacuum tank or ejector 4 communicating with the diffuser; wherein, the experimental The cabin 2 is the experimental model site of the hypersonic pulse wind tunnel. The experimental model 5 and the model attitude adjustment device 6 are installed in the experiment cabin 2. Various attitude changes of the experimental model 5 are realized by the action of the model at...

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Problems solved by technology

[0004] However, the current model attitude adjustment device 6 adopts mechanisms and control systems such as electric motors or hydraulic pressure to adjust the angle of attack and the sideslip angle of the experimental model 5. The model attitude adjustment device 6 of this structure has a complex structure and is inconvenient to use and operate; and The failure rate is high, and the production cost and maintenance and repair costs are high

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