摘要
航天器在发射阶段承受各种恶劣而复杂的声振环境载荷,严重影响着航天器的可靠性。目前,关于改善发射阶段航天器所承受的力学环境、切断振动噪声传播路径的相关研究已得到世界各国航天技术研究机构的重视。其中,各种声振环境载荷以透射声或结构声辐射的形式传递到整流罩内部后,将会在整流罩内形成恶劣声学环境——高声压级的噪声环境。主要对整流罩内噪声的主、被动控制技术的国外研究进展进行系统地综述和分析,以期对我国相关领域的技术研究及应用有所启示。
Spacecraft suffers complex and severe dynamic environment loads during its launch-on stage.These environment loads are mostly composed of acoustic excitation due to very high sound pressure level in the payload fairing and structural excitation due to vibration and shock transmitted through the payload attach fitting.The very high sound pressure level in the payload fairing is caused by the transmitted sound and structural acoustic radiation.In the last decade, various control techniques of dynamic environment loads has received a great deal of attention.The improving of the dynamic environment will allow more sensitive equipment to be included in missions,and reduce the risk of equipment or component failure as well as spacecraft structural weight and cost.In this paper,the status and development of active and passive noise control techniques of payload fairing is mostly summarized.
出处
《噪声与振动控制》
CSCD
北大核心
2011年第1期1-8,共8页
Noise and Vibration Control
基金
全国优秀博士学位论文作者专项资金(200939)
国家自然科学基金(50905182)
关键词
振动与波
航天器
运载火箭
整流罩
声振环境载荷
噪声控制
vibration and wave
spacecraft
launch vehicle
payload fairing
vibration and acoustic environment loads
noise control
