Speed measuring method used in rocket sled test

Abstract

The invention discloses a speed measuring method used in a rocket sled test. According to the method, two sets of photoelectric assemblies are installed on a sled body in the rocket sled test at an accurate and known interval; when the sled body moves and passes through a light barrier pre-arranged beside a track, a blocking signal is given to the front photoelectric assembly and then a blocking signal is given to the back photoelectric assembly, the two sets of photoelectric assemblies record the time information of the blocking signals respectively through data recording devices, and then the known interval between the two sets of photoelectric assemblies is divided by the time difference between the two blocking signals to obtain the moving speed of the sled body. The speed measuring method used in the rocket sled test is low in cost, short in manufacturing cycle and easy to realize, provides an external measurement method with which the moving speed of the sled body can be measured accurately for the rocket sled test, saves the time for preparing for the test, saves testing expenses, saves labor and materials, and guarantees the reliability and stability of the test.

Description

technical field [0001] The invention relates to a rocket sled test velocity measurement method, in particular to a rocket sled test velocity measurement method based on a 9km track, and belongs to the technical field of aerospace tests. Background technique [0002] The rocket sled is a retrievable test method that uses a rocket engine as power and runs along a specially constructed track. As early as after World War II, in order to promote the development of missile weapons and aerospace, countries such as the United States, Britain, France and the former Soviet Union successively built a variety of different types of test sites, and carried out research and development including inertial measurement devices. Some core components of the rocket skid comprehensive test work. With the development of information warfare and the demand for precise strikes, higher requirements have been put forward for inertial guidance and navigation devices in terms of reliability, practicabil...

AI Technical Summary

Problems solved by technology

[0009] It can be seen that errors such as installation and debugging errors, distance measurement errors between targets, instrument erection point errors, and dynamic random errors will have a greater impact on the distance accuracy between targets.

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