Method for measuring hinge moment of control surface

Abstract

The invention discloses a method for measuring hinge moment of a control surface. The method is used for measuring the hinge moment of the control surface by using a balance when a wind tunnel test aiming at the control surface of an aircraft model is performed. A single-component balance is adopted to be directly connected to a rotary shaft of the control surface extending into a machine body, and the hinge moment of the control surface is directly measured by the balance, so that defect of low measuring accuracy due to influence of deformation of a wing on a three-component balance is overcome. In addition, as space in the machine body is wide enough, a balance with higher precision can be designed, and equipment such as the balance and a measurement cable are very convenient to mount and debug. Moreover, according to the method for measuring the hinge moment, the single-component balance can be used for directly measuring not only the hinge moment of the control surface but also the hinge moment of the control surface at different angles and does not need to be changed for different angles like the existing three-component balance, test flexibility is greatly improved, and adaptability is better.

Description

technical field [0001] The present invention relates to a kind of aviation aerodynamics experiment equipment, especially a kind of method used in the process of aircraft wind tunnel experiment, when carrying out wind tunnel experiment on the rudder surface of aircraft model, especially a kind of rudder surface hinge moment measurement method , which is used to measure the hinge moment of the rudder surface when conducting wind tunnel experiments on the rudder surface of the aircraft model. Background technique [0002] The hinge moment of the rudder surface of the aircraft refers to the air moment formed on the rudder shaft by the airflow flowing through the rudder surface. The control mechanism of the aircraft generally controls the deflection of the rudder surface through mechanical transmission. In order to deflect the rudder surface to the required position, the hinge moment acting on the rudder shaft must be overcome. [0003] The wind tunnel is the most basic test equ...

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Problems solved by technology

[0007] However, as described in the above-mentioned prior art, because the wings are relatively thin, it is usually necessary to set corresponding balance structures for different models, and in order to adapt to the problem of insufficient thickness of the wings, it is necessary to specially design the balance of the corresponding sheet structure , so that it can be placed in the wing

The problem is that the balance of the chip structure is limited by the size of the wing space, so the design of the chip balance cannot play the best performance, and the measurement error is large, and because the balance needs to be installed in a small space, it is difficult to install and adjust

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