초록 ▼

A mounting bracket assembly particularly suited for installation in an aircraft having outboard turbine engines to isolate the aircraft cabin from engine noises. The bracket assembly incudes a base fastened below the wing pylon and a pair of arms extending in spaced parallel relation below the base.

A mounting bracket assembly particularly suited for installation in an aircraft having outboard turbine engines to isolate the aircraft cabin from engine noises. The bracket assembly incudes a base fastened below the wing pylon and a pair of arms extending in spaced parallel relation below the base. The forward ends of the arms are connected to the engine, and the aft ends are interconnected to a torque tube which is resiliently fastened to the mounting bracket base by an elastomeric bearing assembly. The elastomeric bearing assembly includes a series of laminations of elastic and inelastic layers which extend along diametrically opposite upper and lower sides of the torque tube to mount the arms in resilient cantilever fashion to the base. The elastomeric bearing assembly permits the arms to rock about a pivot axis through the torque tube while accommodating other motions of the arms, such as vertical translations and relative angular displacements imposed under certain engine operating conditions.

대표청구항 ▼

A mounting bracket assembly for use in isolating vibrations in an aircraft having a turbine engine, comprising: mounting base means adapted to be secured to the aircraft for carrying the engine; an engine attachment fitting assembly disposed between said mounting base means and the engine, said atta

A mounting bracket assembly for use in isolating vibrations in an aircraft having a turbine engine, comprising: mounting base means adapted to be secured to the aircraft for carrying the engine; an engine attachment fitting assembly disposed between said mounting base means and the engine, said attachment fitting assembly having arm means extending alongside said mounting base means and torque shaft means extending laterally of said arm means at one end thereof, said arm means adapted to be connected to said engine at a location spaced from said torque shaft means; laminated elastomeric bearing means connecting said torque shaft means to said mounting base means and mounting said arm means in cantilever fashion to permit said torque shaft means to pivot about a pivot axis in response to displacement of said arm means; abutment means carried by said mounting base means for limiting at least pivotal motion of said arm means about said torque shaft pivot axis; and said laminated elastomeric bearing means including surface means carried by said torque shaft means and said base means for compressing the laminated elastomeric bearing means on diametrically opposite sides of said pivot axis when said arm means pivots about said pivot axis while permitting other resilient displacements of said torque shaft with respect to said pivot axis; whereby the mounting bracket assembly attenuates engine noises transmitted to the aircraft cabin.