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Transmission of Pyrotechnic Shock in a Missile Section and Its Measurement

 

作者: Paul Wang,  

 

期刊: The Journal of the Acoustical Society of America  (AIP Available online 1969)
卷期: Volume 46, issue 1A  

页码: 109-109

 

ISSN:0001-4966

 

年代: 1969

 

DOI:10.1121/1.1972520

 

出版商: Acoustical Society of America

 

数据来源: AIP

 

摘要:

In a space vehicle or a missile system, two sections are sometimes connected together in such a way that a pyrotechnic device is incorporated, either continuously along a circumference or at several discrete locations. At a specific and controlled instant, the pyrotechnic charge is fired and the vehicular sections are separated. The initial forces of separation are explosive in nature. Because the time interval is extremely short, being microseconds in duration, a shock phenomenon is invariably created. The magnitude of this shock is usually quite difficult to measure. Often times, accelerometers are located near the interfaces to serve as transducers for the observation of the same phenomenon. The accelerometer outputs are, however, not always congruent with the original pressure rise. Even though the results are transformed in shock‐spectrum terms, the true shock‐impulse history is seldom reproduced accurately. However, an illustration is given that utilizes the accelerometer outputs at many monitor stations along with the characteristics in the transmitted responses to deduce the initial shock intensity. It is further demonstrated that in complex structures such as space‐system components, the specification based on rigid‐body dynamics of shock may be rendered equally applicable if the transmitted shock is so identified at a selected location.

 

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