A method for testing the speed of a rocket block test

Abstract

The invention relates to the aviation lifesaving rocket sled test technique and relates to a speed measuring method for a rocket sled test. A test device comprises a vehicle-mounted signal acquisitionmemory, magnetoelectric sensors and a permanent magnet, wherein the vehicle-mounted signal acquisition memory and the magnetoelectric sensors are mounted on a sled vehicle body; the permanent magnetis mounted on the side of a track; the magnetoelectric sensors are respectively connected to the vehicle-mounted signal acquisition memory; and the vehicle-mounted signal acquisition memory is connected to a computer. The two or more magnetoelectric sensors are mounted on a sled vehicle along the heading direction to form multi-point detection. Measuring points respectively obtain data of the running speed of the sled vehicle and can be backups for each other so as to improve the reliability of the speed measuring operation. Based on the new distance difference and time difference between themeasuring points formed along the heading direction, a higher-precision speed value in a shorter interval can be obtained through difference calculation. The speed measuring method for the rocket sledtest can be widely applied to the tests, requiring high-precision speed parameters for testing and control, of railcars relating to aviation, aerospace, weapons and the like.

Description

technical field [0001] The invention relates to an aviation lifesaving rocket block test technology, in particular to a speed test method for a rocket block test. Background technique [0002] The development of aviation catapult life-saving devices requires a large number of rocket car slide rail tests. In the rocket block test of the aviation ejection life-saving device, the rocket engine drives the block loaded with the ejection life-saving device to travel on the track, and starts the ejection life-saving device to work when it reaches the predetermined area. Among them, it is necessary to test the running speed of the rocket block on the track to confirm the speed and verification of the ejection of the life-saving device, and to evaluate the ballistic performance of the block. Previously, the rail-mounted magnetoelectric induction speed test method was applied in the test. The rail-mounted magnetoelectric induction speed test method is by laying a plurality of magnet...

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