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Testing device for measuring frictional characteristics of polluted airport runway

A friction characteristic and testing device technology, applied in the direction of measuring devices, mechanical devices, instruments, etc., can solve the problems of the complex structure of the test car method, the inability to be applied in large quantities, and the difficulty of maintenance, and achieve the advantages of forming comparisons, improving accuracy, and measuring Efficient effect

Active Publication Date: 2021-08-13
CIVIL AVIATION UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The test car method has complex structure, high cost and difficult maintenance, so it cannot be widely used

Method used

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  • Testing device for measuring frictional characteristics of polluted airport runway
  • Testing device for measuring frictional characteristics of polluted airport runway
  • Testing device for measuring frictional characteristics of polluted airport runway

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as Figure 1-Figure 7 As shown, the test device for measuring the friction characteristics of airport polluted runways provided by the present invention includes a base frame 1, a radial loading mechanism 2, a driving mechanism 3, an aircraft tire 4, a disc torque sensor 5, a working platform 6, a temperature control mechanism 7 and A velocity displacement sensor 8; wherein, the base frame 1 is a table-type frame structure, and the lower end is fixed on the ground;

[0023] The radial loading mechanism 2 includes a first pressure guide plate 201, a counterweight 202, a second pressure guide plate 203, a lateral transplant frame 204, a guide shaft top plate 205, a guide shaft 206, a tire support 207, a tire center shaft 208, and a guide bushing 209, counterweight installation frame 210, chain 211, force bar 212 and sprocket wheel ...

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Abstract

The invention discloses a testing device for measuring frictional characteristics of a polluted airport runway. The testing device comprises a base frame, a radial loading mechanism, a driving mechanism, aircraft tires, a disc torque sensor, a working platform, a temperature control mechanism and a speed displacement sensor, the radial loading mechanism, the driving mechanism, the aircraft tires and the disc torque sensor are installed on the base frame, and the working platform, the temperature control mechanism and the speed displacement sensor are located below the base frame. The testing device has the advantages that friction characteristics of a polluted runway when an airplane slides on the runway under different loads, different speeds and different pollutant states can be simulated, so that a friction mechanism at an airplane wheel-different pollutant interface is revealed, and the available friction level at the airplane wheel-different pollutant interface under different operation parameters is obtained. The friction coefficient and the slip rate between the aircraft tires and the runway are measured, and the friction characteristics of the runway are summarized, the measurement condition is flexible and high in controllability, the measurement efficiency is high, and the comparison is facilitated, so that the accuracy of the measurement result can be improved.

Description

technical field [0001] The invention belongs to the technical field of test equipment, in particular to a test device for measuring the friction characteristics of polluted runways at airports. Background technique [0002] Studies have shown that polluted runways will have a significant impact on the safety of aircraft during take-off and landing phases. Inaccurate and untimely assessment and reporting of the surface conditions of polluted runways will cause the aircraft's braking performance to decline, and even cause the aircraft to veer off the runway. one of the main factors. [0003] At present, there are many commonly used methods for measuring the friction characteristics of road surfaces, which can be summarized into three types: braking distance method, pendulum method and test car method. However, the above three methods have their own defects, among which the braking distance method has low precision and complicated measurement methods. The pendulum instrument ...

Claims

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Application Information

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IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 崔艳雨杨天祎陈媛媛赵琦黄子君
Owner CIVIL AVIATION UNIV OF CHINA
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