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尾吊发动机的布局,由于气动外形差异较大且与机体结构连接形式的不同,让尾吊吊挂的结构形式和翼吊吊挂有很大不同。虽然尾吊发动机的布局避免了发动机装在机翼上时旅客舱的大部分处在声源的近场直接作用下,而可将最高声压级区转移到旅客舱范围之外。但由于尾吊发动机距离机身较近,在尾吊发动机的客舱内仍能测到由于发动机振动引起的很高噪声级。对于尾吊发动机选择或设计合理的隔振器是非常必要的。这里介绍典型尾吊吊挂典型结构及传力分析,并分析典型隔振器的隔振原理。
Tail hanging engine layout, due to large differences in aerodynamic shape and body structure of the connection in different forms, so tail suspension hanging structure and wing hanging suspension are very different. Although the layout of the tail boom engine avoids that most of the cabin is located directly under the near field of the sound source when the engine is mounted on the wing, the highest sound pressure level zone can be diverted to the passenger compartment. However, due to the tail-hanging engine closer to the fuselage, a very high noise level due to engine vibration can still be detected in the cabin of the tail-suspended engine. It is necessary to select or design a reasonable vibration isolator for the tail boom engine. Here is a typical tail suspension hanging typical structure and force analysis, and analysis of vibration isolation principle of a typical isolator.