Wind tunnel mechanical balance single-vector loading method

Abstract

The invention discloses a wind tunnel mechanical balance single-vector loading method. Mechanical balance single-vector loading is composed of a force transmission system, a force generation system and a control system. The force transmission system transmits force generated by a force source to a loading point through a steel wire. Fixed included angles are formed between the direction of the force borne by the loading point and the direction of the force borne by the loading point. The loading force can be decomposed into three directions corresponding to the resistance, the lift force and the side force of a balance respectively. The offset of the loading point and the coordinate center of the balance determines the moment applied to the balance. According to the scheme, loading loads of six components can be obtained at the same time through one loading point. According to the wind tunnel mechanical balance single-vector loading method, accurate control over the force is achieved through the computer control technology, automatic loading is achieved, the automation level of loading is improved, the proper loading point is selected according to the characteristics of the mechanical balance, vector loading is achieved, the six components are loaded at the same time through one loading point, and the loading efficiency is improved.

Description

technical field [0001] The invention relates to the field of wind tunnel tests, in particular to a method for loading a single vector on a wind tunnel mechanical balance. Background technique [0002] The wind tunnel mechanical strain balance is widely used in the belly support force test of the wind tunnel due to its advantages of large measurement range, convenient use and strong stability. The mechanical balance decomposes the aerodynamic load into three components of force and three components of 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] Before use, it is necessary to calibrate or test the performance of the balance. The current calibration method for the balance is to install a loading frame for loading, and use the method of manually moving weights to load. This detection method is complicated to install and has low e...

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.

Images