Volume 4, 2013Progress in Propulsion Physics
|Page(s)||395 - 416|
|Section||Chapter Four. Air-breathing and pulse detonation propulsion|
|Published online||05 March 2013|
Interaction of power plant with airframe of new generation aircraft
Tupolev 17 Tupolev Embankment, Moscow 105005, Russia
Strategic development of new generation airplanes goes in the direction of further noise decreasing and increasing fuel efficiency, where the determining role belongs to superhigh bypass ratio engines, especially with application gearbox scheme. Fan shaft components will determine the spectrum of power plant dynamic effect transferred via mounting assembly (engine attachments) on airframe structure. This spectrum is reradiated into the cabin in the form of structural noise. Long-term researches of engines (with different bypass ratio) and airframe have allowed (i) to calculate expected structural noise on the new generation aircraft; and (ii) to offer the concept of new vibration isolation mounting.
© Owned by the authors, published by EDP Sciences, 2013