Method for measuring torque of folding missile wing

Abstract

The invention discloses a method for measuring the torque of a folding missile wing. According to the method, the moment balance principle is used for measurement, a strain gauge and a processing circuit are not needed, the operation and observation are convenient, the calculation process is simple, the eccentric moment coupling effect is not introduced, and under the coupling effect of torsional moment of a torsional spring, the friction moment and the moment acting on the missile wing by the missile body limiting surface and the condition that the torsional moment of the torsional spring is always larger than the friction moment, the torsional moment of the torsional spring and the friction moment cannot reach a balance state of the two moments, on the basis that the applied external moment reaches the first-time multi-moment balance, the applied external moment is continuously increased to break the first-time multi-moment balance, then the applied external moment is reduced until the second-time multi-moment balance is achieved; two times of multi-moment balance is established by applying the measurable external moment for three times, and synchronous measurement of various moment combinations of the torsional moment of the torsional spring and the friction moment at any position in the rotation process of the folding missile wing is realized.

Description

technical field [0001] The invention relates to the technical field of measurement methods, in particular to a method for measuring the torque of a folding wing. Background technique [0002] In order to realize the miniaturization of the radial space of the whole bomb, or to meet the radial size requirements of the launch tube, the folded wing design is often used on the wing structure. The common method is to add helical torsion springs and The rotating shaft, when the wings are folded, the torsion spring is compressed by an external force, and the elastic moment is released by the torsion spring to realize the expansion of the wings. [0003] In the radial plane, during the rotation of the wing relative to the body, it is mainly affected by the comprehensive influence of the wing torque and the aerodynamic moment. The friction torque between the rotating shafts and the friction torque between the torsion spring and the rotating shaft. The torsion spring torque must overc...

AI Technical Summary

Problems solved by technology

The former method needs to paste strain gauges on the tested part, and process the circuit measurement torque through a single-piece full bridge or a bridge of strain gauges. The principle of the measurement method is complicated and the operation is cumbersome.

The latter method is only suitable for the measurement of a single torque, and cannot meet the simultaneous measurement requirements of multiple torque combinations

ZL201510589012.7 adopts the method of synchronous measurement of torque combination, but it needs to introduce eccentric torque, and it is only applicable to the coupling of two torques, and the two torques need to reach the torque balance state during measurement, which is not suitable for the coupling of non-eccentric torque situation, it is not applicable to the coupling action of three torques, and it is also not applicable to the measurement under the unbalanced state of two torques

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