Open type wind tunnel lifting system for airplane testing and lifting method thereof

Abstract

The invention discloses an open type wind tunnel lifting system for aircraft testing and a lifting method thereof, and belongs to the technical field of aircraft testing. The system comprises a tool standard knot, a shear fork type lifting mechanism, a fan module and a position monitoring device which are sequentially distributed from bottom to top, wherein the position monitoring device is used for controlling normal operation of each electrical element. The lifting height of the fan module is coarsely adjusted and finely adjusted through the shear fork type lifting mechanism, the large-weight and large-torque fan module is conveyed to a designated position, reliable stability and a positioning function are provided, the shear fork type lifting mechanism adopts a graded lifting process, and the stroke of a single hydraulic shear fork frame is shortened. The lifting height of the fan module can be adjusted, the horizontal rotation angle and the pitching angle of the fan module can also be adjusted, natural wind of various blowing angles can be better simulated, and test data are more comprehensive and accurate.

Description

technical field [0001] The invention belongs to the technical field of aircraft testing, in particular to an open wind tunnel lifting system for aircraft testing and a lifting method thereof. Background technique [0002] The air blowing test system is one of the special environment simulation systems of the climate environment laboratory. It is mainly composed of a wind array subsystem and a wind tunnel subsystem, and is used to conduct air blowing simulation environment tests in the laboratory. According to the structure, the blowing test device is composed of the upper and lower layout of the fan module and the lifting module. The fan module includes an axial flow fan, a matching motor, a round-square transition section and an equal-straight section, etc., providing different quality (speed / humidity / wind direction) )wind of. However, due to the high position of the aircraft fuselage and various environmental test conditions, a lifting platform is required to complete the...

AI Technical Summary

Problems solved by technology

[0004] When the existing lifting system uses the hydraulic cylinder to lift, it cannot be carried out in stages, so that the stroke of the hydraulic cylinder is long and the stability is poor. At the same time, when the weighing equipment accidentally falls, there is no buffer element, which is easy to cause major accidents and has low safety performance. Adjust the pitch angle and horizontal rotation angle of the fan module so that the formed wind force does not meet the multi-angle blowing characteristics of natural wind, resulting in low test accuracy

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