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Missile/rocket pyrovalve reliability index verification test method

A technology of projectile body electric explosion and test method, which is applied in the field of projectile body electric explosion valve reliability index verification test, can solve the problems that the reliability index cannot be verified, shorten the development cycle, reduce the number of test pieces, and facilitate implementation Effect

Active Publication Date: 2014-03-26
BEIJING INST OF ASTRONAUTICAL SYST ENG +1
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Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a verification test method for the reliability index of the rocket body electric explosion valve, and to solve the problem that the reliability index cannot be verified

Method used

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  • Missile/rocket pyrovalve reliability index verification test method
  • Missile/rocket pyrovalve reliability index verification test method
  • Missile/rocket pyrovalve reliability index verification test method

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Embodiment Construction

[0014] Combine below figure 1 The present invention is described in detail, and the specific process is as follows:

[0015] (1) According to the flight mission profile of the launch vehicle, the reliability characteristic quantity of the electric explosion valve of the projectile body is determined as the detonation intensity, which obeys the normal distribution;

[0016] (2) According to the preset reliability index threshold, look up the normal distribution table GB / T4086.1, and determine the two-sided tolerance coefficient k 1 、k 2 , The number of samples of electric explosion valves to be tested is n, where n is a positive integer;

[0017] (3) According to the bilateral tolerance coefficient obtained in step 2 and the average value of the initiation intensity of the electric explosion valve to be tested, the upper limit of the initiation intensity and the lower limit of the initiation intensity are obtained

[0018] P B L ...

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Abstract

Disclosed is a missile / rocket pyrovalve reliability index verification test method. According to the method, initiation strength of a pyrovalve firing device is used as reliability characteristic; an initiation vessel test fixture is designed; initiation under different initiation strengths is achieved by changing the volume of an initiation vessel. According to theoretical basis of the method, initiation pressure is inversely proportional to the initiation vessel; the initiation strength reliability characteristic complies with normal distribution; tolerance limit coefficients are reversed by a normal distribution table according to reliability indexes to be verified; accordingly, initiation strength required is designed, initiation test is performed, and pyrovalve reliability index estimation is performed according to the test results.

Description

technical field [0001] The invention relates to a reliability verification test method of an electric explosion valve for a launch vehicle / missile weapon, which is used for a reliability verification test of an electric explosion valve for a projectile body. Background technique [0002] The successful launch of carrier rockets and missile weapons has a huge impact. It is necessary to accurately evaluate their reliability level before launch. The electric explosion valve is an important stand-alone launch vehicle, and it is also a typical stand-alone. Its reliability verification method has important reference for other stand-alone products. Significance, it is necessary to accurately verify its reliability. [0003] At present, the relatively mature reliability verification test method is mainly used in electronic products. This method requires a large sample size and a large number of tests, and is not suitable for reliability verification of mechanical products. The elec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 孙法国王细波刘春姐马飞孙海鹏李娟娟史刚洪刚
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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