Arresting hook dynamic fatigue test device and test method

A test device, dynamic fatigue technology, applied in the direction of measurement device, mechanical component testing, machine/structural component testing, etc., can solve problems such as difficulty in predicting the fatigue life of arresting hooks

Active Publication Date: 2018-06-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Purpose of the present invention: for carrier-based aircraft, under the situation that the shipboard test and land-based test are difficult, a set of arresting hook dynamic fati

Method used

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  • Arresting hook dynamic fatigue test device and test method
  • Arresting hook dynamic fatigue test device and test method
  • Arresting hook dynamic fatigue test device and test method

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Embodiment Construction

[0029] The structure of the arresting hook dynamic fatigue test device is as attached Figure 1-8 shown. Here, an embodiment of the test device will be described.

[0030] The implementation mode of arresting hook dynamic fatigue test device is:

[0031] (a), at first carry out parameter adjustment test, determine the throwing height of hanging basket 4, make the falling speed of hanging basket 4 reach required sinking speed when arresting hook 16 contacts with collision plate 7; Buffer 5 is hydraulic type, adjust The parameters of the oil hole of a pair of hydraulic buffers make the buffering effect after contact with the hanging basket 4 consistent with the buffering effect of the main landing gear when the carrier-borne aircraft lands; adjust the positions of the arresting hook 16 and the collision plate 7 so that the arresting hook 16 The distance between the contact point of the hook head and the collision disk 7 from the axis of the collision disk reaches a predetermin...

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Abstract

The invention provides an arresting hook dynamic fatigue testing device and testing method, belonging to a testing device and a testing method and particularly relating to the technical field of fatigue service life detection after an arresting hook is subjected to impact loading when a carrier plane lands on a ship. The testing device includes a testing stand system composed of a stand (3), a column (2), a lifting motor (1), and a hanging basket (4), and further includes a buffer system composed of a buffer (5) and a buffer base (6), a bump testing system composed of an arresting hook system L and a bump table P, a cable bumping testing system composed of a bump table P, a shaft sleeve (11), and an arresting cable (12), and a dynamic loading system composed of a support stand (17), an actuating cylinder (18), a lever (19), and an extension rod (20). The arresting hook dynamic fatigue testing device and testing method realize the stimulation of load-bearing conditions of deck bumping of the arresting hook, cable humping impact, and arresting force dynamic loading, perform multi-time repeated tests, and predict the fatigue service life of the arresting hook.

Description

technical field [0001] The invention belongs to a test device and a test method, and particularly relates to the technical field applicable to the fatigue life prediction of an arresting hook subjected to an impact load when a carrier-borne aircraft lands. technical background [0002] The arresting hook is a significant difference between carrier-based aircraft and land-based aircraft. Its main function is to hook the aircraft carrier’s arresting cable after the aircraft enters the field smoothly, transfer the arresting force to the fuselage, and force the aircraft to slow down. Usually, when a carrier-based aircraft lands, the arresting hook first collides with the deck, and bounces at a limited height under the action of the longitudinal damper of the arresting hook. The arresting wire is engaged, the arresting wire system and the arresting aircraft start to work, stopping the aircraft within a limited distance. [0003] The arresting hook is the only part connecting the...

Claims

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Application Information

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IPC IPC(8): G01M13/00
Inventor 魏小辉彭一明聂宏张明甘盛勇徐锦锦
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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