Support method for aircraft model in wind tunnel experiment

Abstract

The invention discloses a support method for an aircraft model in a wind tunnel experiment. The method includes the following steps: 1) a wind tunnel and an aircraft model in the wind tunnel are connected and fixed through a spatial rod system, and the wind tunnel is not in direct contact with the aircraft model; and 2) according to requirements of experimental measurement and support system design, the diameter, length, number, material and spatial distribution form of support rods in the spatial rod system are adjusted, thereby realizing optimization of rigidity of an aircraft model supportsystem. By adoption of the support method provided by the invention, the support system further adapts to and meets the requirements of wind tunnel experiment content and measurement, thereby achieving the purpose of improving precision and reliability of pneumatic experiment data, and effectively solving the problems of insufficient rigidity, large flow field interference and complicated system internal force of a support system in a traditional support method, and the support method provided by the invention has obvious advantages and potential of innovative development in the aspect of a wind tunnel experiment, particularly in the aspect of a full-size large-model pneumatic experiment.

Description

technical field [0001] The invention relates to the technical field of wind tunnel experiments, in particular to a support method for an aircraft model used in wind tunnel experiments. Background technique [0002] During actual flight, the aircraft often needs to perform actions such as pitch, yaw, roll, heave, lateral translation, and longitudinal translation. Therefore, it is necessary to measure various data of the aircraft in ground wind tunnel experiments. In ground wind tunnel experiments, the principle of relative motion is generally used, that is, the aircraft model is fixed or relatively fixed, and the wind tunnel generates high-speed airflow to act on the aircraft model to simulate the flight situation. Therefore, the wind tunnel test aircraft model must be supported and fixed in a specific way, which is commonly referred to as the model support system. [0003] The traditional support systems commonly used at present can be divided into three categories: the fir...

AI Technical Summary

Problems solved by technology

The space rod system is used to realize multi-point support for the aircraft model, which solves the traditional problems of insufficient support rigidity, excessive flow field interference, and complex internal forces of the support system.

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