| 摘要 |
In an aircraft having a jet engine mounted to and beneath a wing thereof wherein the engine is a predetermined distance from the wing and wherein further the engine is mounted on a strut (10) affixed to the wing, a low profile engine mount assembly is attachable to the strut and the engine to hold the engine on the strut. The engine mount assembly is constructed and arranged to occupy a minimum portion of the distance between the engine and the wing so as to provide the maximum strut vertical dimension (depth), thereby providing significant benefit in length-to-stiffness ratio in the strut. The engine mount is further constructed and arranged to accomodate longitudinal growth of the engine due to thermal expansion and includes a yoke assembly (22) having a first arm (46) and a second arm (56), the yoke being mounted to the strut so as to permit pivotal movement of the yoke about an axis substantially orthogonal to the engine axis. The first and second arms of the yoke are mounted to an engine-mounting ring (38) affixed to the engine. A first link (48) is pivotally attached at its first end (48a) to the first arm (46) and pivotally attached at its second end (48b) to the engine-mounting ring (38). A second link (54) is pivotally attached at a first end (54a) to the second arm (56) and pivotally attached at the second end (54b) to the engine-mounting ring (38). The first ends of the links are pivotable about axes substantially parallel to the engine axis, while the second ends of the links are substantially universally pivotable, preferably being mounted by means of spherical bearings to the engine-mounting ring. A third link (62) is connected between the yoke (22) and the engine-mounting ring (38) intermediate the attachment points of the first and second links. Both ends of the third link have spherical bearings associated therewith to provide pivotal attachment of the third link to the yoke and the mounting ring. The engine mount is constructed and arranged to provide for an optimum angle of the first and second links with respect to the horizontal so as to react against vertical, side and seizure (torque) loads on the engine, however, the pivotal attachment of the yoke to the strut permits the links to be short enough to remain within the cowl outline (68) surrounding the engine to increase aerodynamic efficiency of the cowl structure. |
