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首页> 外文期刊>Journal of Aerospace Sciences and Technologies >PYROSHOCK ISOLATOR FOR SPACECRAFT APPLICATIONS
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PYROSHOCK ISOLATOR FOR SPACECRAFT APPLICATIONS

机译：航天飞机应用的热释火隔离器

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摘要

Pyroshock produced by pyrotechnic devices are the most severe shock experienced by spacecraft and its components. In spacecraft pyro devices are used for deployment appendages and mounted on spacecraft with critical electronic equipments placed in their near field and mid field. Attenuation of the pyroshock levels transmitted to these equipments is attempted bx providing passive isolator at the base of the pyro devices. The isolator material for spacecraft application is to be space qualified and the isolator dynamics to be uncoupled from spacecraft modes to survive launch loads. The isolator stiffness is arrived based on load characterisation tests done on the damper material and the isolator configuration is adaptable for mounting on spacecraft with restrictions in size, mass etc. Design of the isolator is done based on stiffness to achieve the isolation at high frequencies as well as to survive the launch loads. The shock attenuation of the order of 20 dB at high frequencies is achieved.
机译：烟火设备产生的焦震是航天器及其组件遭受的最严重的冲击。在航天器中，热释装置用于部署附件，并安装在航天器上，并将关键电子设备置于近场和中场。试图衰减传送到这些设备的热震级，以便在热释电装置的底部提供无源隔离器。航天器应用的隔离器材料应符合太空要求，并且隔离器动力学应与航天器模式脱钩，以承受发射载荷。隔离器的刚度是根据对减震器材料进行的负载特性测试得出的，并且该隔离器的配置适用于安装在尺寸，质量等受限制的航天器上。隔离器的设计基于刚度来实现，以便在高频情况下实现隔离。以及承受发射载荷。在高频下实现了20 dB量级的冲击衰减。

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