| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas turbine engine including a broadband damping system, and to provide a method for producing the engine. <P>SOLUTION: The gas turbine engine includes an engine case, a rotor assembly 66 mounted within the engine case and a broadband damping system 20 disposed between the rotor assembly 66 and the engine case. The broadband damping system 20 includes a first set of three parameter axial dampers 60, 61, 62 angularly spaced around the rotational axis, and a second set of three parameter axial dampers 63, 64, 65 coupled in parallel with the first set of three parameter axial dampers 60, 61, 62. The first and second sets of three parameter axial dampers 60, 61, 62, 63, 64, 65 are tuned to provide peak damping at different rotational frequencies to increase the damping bandwidth of the broadband damping system 20 during operation of the gas turbine engine. <P>COPYRIGHT: (C)2013,JPO&INPIT |
