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Research and development of MEMS sensor element of protection of information and telecommunication equipment in unmanned spacecraft with electromagnetic launch
Engineering Education # 07, July 2012
DOI: 10.7463/0712.0442268
The authors consider approaches to creation of security features for information and telecommunication equipment in an unmanned space vehicle (SV) with electromagnetic launch. It is shown that the main element of the microelectromechanical sensor element - the key - is a beam with a loaded core. The authors provide theoretical calculations and a table of geometric dimensions of sensor elements for two thresholds achieved with electromagnetic starting of SV - 2500 and 3000 acceleration of gravity of free fall (g). The authors consider MEMS key manufacturing technology and propose several ways to make them. The results of experimental studies under static and dynamic g forces are also presented in the article.
77-30569/322339 Some features of shock testing
Engineering Education # 02, February 2012
Some issues relating to the simulation of shock pulse excitations were considered. Common schemes of shock equipment were presented as well as the method of calculating of the parameters of elastic and elastic-plastic contact zone of colliding bodies. It was shown that the conditions of simulation testing could be more severe in the sense of strength than the real object performance conditions depending on the dynamic factor value (shock spectrum).
 
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