A Single Vector Loading Method for Wind Tunnel Mechanical Balance

Abstract

The invention discloses a single-vector loading method for a mechanical balance in a wind tunnel. The single-vector loading of the mechanical balance is composed of three parts: a force transmission system, a force generation system and a control system. point, the direction of the force on the loading point has a fixed angle with the X, Y, and Z directions, and the loading force can be decomposed into three directions corresponding to the resistance, lift, and lateral force of the balance, and the offset between the loading point and the coordinate center of the balance. The amount determines the torque applied to the balance. This scheme can simultaneously obtain six components of the loading load through one loading point; the invention realizes the precise control of the force through computer control technology, realizes automatic loading, and improves the automation level of loading. According to the characteristics of the mechanical balance, the appropriate loading point is selected to realize the vector loading, and through one loading point, the simultaneous loading of six components is realized, which improves the loading efficiency.

Description

Technical field[0001]The invention relates to the field of wind tunnel testing, and specifically relates to a single vector loading method for a wind tunnel mechanical balance.Background technique[0002]The wind tunnel mechanical strain balance is widely used in the wind tunnel's abdominal support force test with its advantages of large measuring range, convenient use and strong stability. The mechanical balance decomposes the aerodynamic load into three-component force and three-component torque through the mechanical structure, and transmits the force and torque to the measuring element through the force transmission mechanism to obtain the value of the force and torque.[0003]The balance performance needs to be calibrated or tested before use. The current calibration method for balances is to install a loading rack for loading, and use manual weight loading method to load. This detection method is complicated to install, low efficiency, and time-consuming. At the same time, the loa...

AI Technical Summary

Problems solved by technology

[0003] It is necessary to calibrate or test the performance of the balance before use. The current calibration method for the balance is to install the loading frame for loading, and use the method of manual weight loading to load. This detection method is complicated to install the loading frame, low in efficiency, and time-consuming.

At the same time, the loading of artificial weights may cause errors in the final loading due to the influence of the environment, resulting in inaccurate final measurements.

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