Aeronautics and astronautics – Aircraft power plants – Mounting
Patent
1991-05-29
1993-03-30
Barefoot, Galen
Aeronautics and astronautics
Aircraft power plants
Mounting
188320, 26714012, 26714013, 248636, 248557, B64D 2700
Patent
active
051976927
ABSTRACT:
A double pumper mount useful as a front mount for an aircraft engine. A pair of fluid chambers are selectively interconnectable by one of a plurality of inertia tracks by use of an adjustable cylindrical member which has the tracks formed as generally helical grooves extending about the periphery of the cylindrical member. These inertia tracks have different flow characteristics so as to produce differing notch frequencies so as to attenuate different vibrational frequencies. A second embodiment has a single inertia track whose length can be altered by rotating the cylindrical member to change the point at which the ingress/egress port of the fluid chamber engages the circumferential portion of the inertia track.
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Downing Marshall W.
Jones Peter J.
Barefoot Galen
Lord Corporation
Thomson R. K.
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