A six-component rod-type strain balance used for force testing of aircraft landing gear

Abstract

The invention discloses a six-component rod-type strain balance used for a force test of an aircraft landing gear, which solves the problem of accurate measurement of the load of the landing gear under working conditions such as landing and taxiing of the aircraft. It adopts high-strength alloy steel integral processing and forming structure, including the measuring end flange, inner shaft, axial force measuring element, shell, fixed end flange and support piece group; the measuring end flange is connected with the inner shaft, the fixed end method The flange is connected with the shell, and the inner shaft and the shell are connected through the supporting plate group to form an integrated structure; the mouth-shaped axial force measuring element is formed in the upper and lower through square grooves jointly formed by the inner shaft and the shell, and is arranged in the The hinge structure on the axis of the balance is respectively connected with the inner shaft and the housing, finally forming the whole balance. The balance of the invention has compact structure and high rigidity, and can realize six-component dynamic and static load measurement of the landing gear; completely eliminates the interference of other load components on axial force measurement, and greatly improves the load measurement accuracy and use stability; the calibration cost is low, Short cycle.

Description

technical field [0001] The invention relates to a rod-type strain balance, in particular to a six-component rod-type strain balance used in a force-measuring test of an aircraft landing gear, and belongs to the technical field of test aerodynamics measurement. Background technique [0002] With the advancement of aviation industry technology, whether it is civil or military manned aircraft or unmanned aerial vehicles, it is developing in a safer, more reliable and economical direction. The landing gear is one of the most important load-bearing parts of the aircraft, which is used to establish the connection between the airframe and the ground when the aircraft is parked, taken off, landed and taxied. Factors such as the strength / rigidity, bearing capacity and quality of the landing gear directly affect the safety and economy of the aircraft. In the design of aircraft finalization and modification, the dynamic and static loads of the landing gear under the landing and taxiin...

AI Technical Summary

Problems solved by technology

[0005] The problem solved by the technology of the present invention is: the present invention provides a six-component rod-type strain gauge used for the dynamometric test of the aircraft landing gear, aiming at the insufficient load measurement capability of the current aircraft landing gear ground test during landing, taxiing and other states. Balance, which can realize high-precision measurement of dynamic / static loads of aircraft landing gear under various working conditions

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