Wind-tunnel balance body shafting static correction system and wind-tunnel balance body shafting static correction method

Abstract

The invention provides a wind-tunnel balance body shafting static correction system and a wind-tunnel balance body shafting static method. The system comprises a rigid base, a supporting rod, a loading head, totally seven displacement sensors and a load generating device, wherein the rigid base is used for providing a stable support; one end of the supporting rod is fixed on the rigid base, and the other end of the supporting rod is connected with one end of a balance; the loading head is used for replacing a model and is connected to a model connecting end of the balance; the seven displacement sensors are used for measuring the linear displacement and angular displacement of the balance along three directions and are symmetrically arranged around a correction core of the balance along three directions; two displacement sensors are respectively arranged in each direction; one displacement sensor is arranged along an axial direction; the load generating device is connected with the loading head through a connecting piece, so that a load is applied to the loading head. The system is simple in structure, and the cost is saved; the static correction efficiency is improved, the correction time is shortened, and the wind-tunnel balance body shafting static correction system is actually a simple, feasible and high-precision balance shafting static scheme.

Description

technical field [0001] The invention belongs to the field of wind tunnel dynamometric balance calibration, in particular, the invention particularly relates to a static calibration system and method of a wind tunnel balance shaft system. Background technique [0002] At present, conventional wind tunnel force testing requires the use of wind tunnel strain balances to measure the magnitude of the aerodynamic load on the model. Before the test, it is necessary to use the balance calibration system to calibrate the relationship between the load and the balance output signal, that is, to simulate the load of the test model on the balance in the wind tunnel, apply the known force and moment to the balance, and find the relationship between the known force and moment and The relationship between the balance output, that is, the balance formula, and determines the measurement accuracy and precision of the balance and time calibration. [0003] There are two main methods of balance...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a system and method for static calibration of the balance shaft system in a wind tunnel to solve the existing problems in the prior art, such as error sources that cannot be eliminated, or complex structures, high costs, and low efficiency.

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