Undercarriage wheel brake kinetic moment measuring method

A measurement method and landing gear technology, applied in force/torque/power measuring instruments, measuring devices, instruments, etc., can solve problems such as measuring the braking torque of wheels and wheels that cannot be equipped with landing gear

Active Publication Date: 2015-05-06
XIAN AVIATION BRAKE TECH
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AI Technical Summary

Problems solved by technology

[0008] In order to overcome the deficiency in the prior art that the wheel braking torque cannot be measured for the wheel

Method used

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  • Undercarriage wheel brake kinetic moment measuring method
  • Undercarriage wheel brake kinetic moment measuring method
  • Undercarriage wheel brake kinetic moment measuring method

Examples

Experimental program
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Embodiment Construction

[0054] This embodiment is the measurement of the braking torque of a certain type of aircraft performing a braking test after taxiing on the runway.

[0055] The strain gauge 5 has 4 pieces, which are respectively the first strain gauge R 1 , the second strain gauge R 2 , the third strain gauge R 3 and the fourth strain gauge R 4 . The data acquisition system 6 is a conventional strain acquisition system. Among them, the four strain gauges are divided into two groups, the first strain gauge R 1 with the second strain gauge R 2 One set, the third strain gauge R 3 with the fourth strain gauge R 4 One group; paste two groups of strain gauges symmetrically on the surface of the wheel shaft between the hub and the landing gear strut 4, and be on the horizontal plane where the axis of the wheel shaft is located. The angle between the centerlines of the two strain gauges in the length direction of each group is 90 degrees, and the angles between the centerlines of the two str...

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PUM

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Abstract

An undercarriage wheel brake kinetic moment measuring method measures a brake kinetic moment in a loading state or an undercarriage wheel in a braking test of a large inertia dynamic test bed, solves the problems that a dynamic braking moment of a brake device cannot be directly measured as a torque/force sensor cannot be mounted on an undercarriage and the dynamic test brake moment of the undercarriage is measured, meets kinetic moment measuring requirements of a brake test of undercarriages with different structural sizes and is used for measuring the brake moment of a plane brake device in the loading state. The undercarriage can serve as an onboard device of a plane and has a huge use value. The measuring method has the advantages that the measuring method is simple in structure, convenient to mount, fine in universality and safety, can be widely used for undercarriage brake tests of various military aircrafts and civil aircrafts and other wheel power tests of an automobile and the like, and has important social significance and application prospects, and time and labor are saved.

Description

technical field [0001] The invention belongs to the aircraft braking test technology, and in particular relates to a method for measuring the braking torque in the installed state of aircraft wheels and other braking power tests with landing gear. Background technique [0002] Braking torque, also known as braking torque, is the torque generated by the brake device to prevent the wheel from rolling when the wheel brakes, and is opposite to the direction of the combined torque. It is one of the key parameters in the design of the brake wheel. It is not only the basis for determining the structural parameters of the brake device, but also directly affects the structural strength of the landing gear, tires, and hubs. The main parameters of running time, energy absorption, etc. In use, it can be divided into static braking torque and dynamic braking torque according to the motion state of the wheel. Static braking torque: The braking torque provided by the braking device when ...

Claims

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Application Information

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IPC IPC(8): G01L5/28
Inventor 邓伟林
Owner XIAN AVIATION BRAKE TECH
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