Continuous transonic wind tunnel semi-flexible wall nozzle throat block vertical space electric drive device

Abstract

A continuous transonic wind tunnel semi-flexible wall surface nozzle throat block vertical space type electric drive device, which realizes precise control of the predetermined pose of the nozzle throat block. The device innovatively uses a parallel mechanism to realize six-degree-of-freedom control of the throat block, which can actively control and eliminate the additional load acting on the throat block. It includes a drive unit arranged vertically and driven by a motor; a guide unit composed of multiple sets of guide rails; a transmission unit composed of a throat slide table, a slider, a drive rod and a spherical pair; an outer frame and a throat block mounting plate composed of support units. The continuous transonic wind tunnel semi-flexible wall surface nozzle throat block vertical space electric drive device forms a parallel mechanism with redundant degrees of freedom through multiple drives to drive the throat block to reach a predetermined pose, and ensure its accuracy and molding stability. sex.

Description

technical field [0001] The invention relates to the technical field of continuous transonic wind tunnel tests, in particular to a six-degree-of-freedom position and posture adjustment mechanism in the semi-soft wall throat block space of the continuous transonic wind tunnel nozzle section. Through the coupling movement and joint control of six groups of effective vertical drives (multiple groups of follow-up vertical drives can be added), the complete control of the six degrees of freedom of the throat block is realized. The device is mainly used for the driving control of the throat block of the semi-flexible nozzle of the continuous transonic wind tunnel. Background technique [0002] The wind tunnel is an important test device used to verify whether the aerodynamic shape of various types of aerospace vehicles and high-speed EMUs is reasonable. Its main principle is to simulate the external gas flow field characteristics (Mach number, Reynolds number, etc.) number, Prandt...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a continuous transonic wind tunnel nozzle section semi-soft-walled throat block vertical space type electric drive device, so that it can complete the large throat block in a limited vertical space. The ability to adjust the position and posture; solve the inevitable problem of large swinging mass in the "frame swing" working mode of common semi-flexible nozzles; solve the problems of large energy consumption and slow response in the traditional throat block drive mode, Provide low energy consumption, high response speed, innovative, safe and reliable electric drive mode of throat block section; realize multi-motor synchronous drive and coordinated control, and improve the accuracy of throat block position control based on coupled motion parallel mechanism; innovative design of motor drive The precision transmission system and layout structure make the throat block driving device have the advantages of convenient installation, reliable operation and long service life; the throat block section has the ability to adjust six degrees of freedom in space, and then the driving device can actively resist lateral force, Solve the huge wear and low reliability caused by the traditional way of relying on forced guidance to overcome lateral force

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