Rear engine fastener for an aircraft having reduced volume widthwise and an aircraft comprising at least one such rear engine fastener
A rear engine fastener for an aircraft connecting a primary structure and an engine of an aircraft, the rear engine fastener comprising a support configured to be connected to the primary structure, at least one main shackle connected to the support by first and second support link pins, which are symmetrical relative to a vertical longitudinal plane, and to the engine by a first lateral engine link pin and by a central engine link pin, and at least one secondary shackle connected to the engine by a second lateral engine link pin and to the main shackle by a secondary link pin.
1. A rear engine fastener for an aircraft connecting a primary structure and an engine of an aircraft, said rear engine fastener comprising:
a support configured to be connected to the primary structure,
at least one central attachment lug rigidly connected to the engine,
at least one first lateral attachment lug rigidly connected to the engine,
at least one second lateral attachment lug rigidly connected to the engine,
the first and second lateral attachment lugs being disposed on either side of the central attachment lug,
at least one main shackle connected to the support by first and second support link pins and to the first lateral attachment lug by a first lateral engine link pin,
at least one secondary shackle connected to the second lateral attachment lug by a second lateral engine link pin,
wherein the main shackle is connected to the central attachment lug by a central engine link pin positioned in a vertical longitudinal plane,
wherein the first and second support link pins are symmetrically positioned relative to the vertical longitudinal plane, and
wherein the secondary shackle is connected to the main shackle by a secondary link pin,
wherein the support comprises at least one mounting plate having a bearing surface configured to be pressed against the primary structure and through orifices for housing link elements, as well as at least one web, produced as a single piece with the at least one mounting plate, positioned in an approximately transverse plane, having first and second through holes for the first and second support link pins, and
wherein the rear engine fastener further comprises:
two webs that are parallel to each other and spaced apart,
a single main mounting plate positioned between the two webs,
two secondary mounting plates that are parallel to each other, spaced apart and disposed on either side of the main mounting plate,
two central attachment lugs that are parallel to each other, spaced apart and disposed on either side of the main mounting plate,
two first lateral attachment lugs that are parallel to each other, spaced apart and disposed on either side of the main mounting plate, and
a single second lateral attachment lug positioned between the secondary mounting plates.
2. The rear engine fastener for an aircraft according to claim 1 , wherein each main shackle is formed as a plate approximately positioned in a transverse plane and comprises five orifices, including first and second orifices for housing the first and second support link pins, a third orifice for housing the central engine link pin, a fourth orifice for housing the first lateral engine link pin and a fifth orifice for housing the secondary link pin.
3. The rear engine fastener for an aircraft according to claim 2 , wherein each main shackle comprises an approximately triangular central part with three rounded vertices, in a vicinity of which the first, second and third orifices are positioned, a first long extension, at a free end of which the fourth orifice is positioned, as well as a second short extension, at a free end of which the fifth orifice is positioned.
4. The rear engine fastener for an aircraft according to claim 1 , wherein each secondary shackle is formed as a plate, approximately positioned in a transverse plane, of oblong shape comprising first and second rounded ends, in a vicinity of which first and second holes are positioned for housing the second lateral engine link pin and the secondary link pin.
5. The rear engine fastener for an aircraft according to claim 1 , wherein the first and second support link pins each integrate a ball joint link for allowing movement of the engine.
6. The rear engine fastener for an aircraft according to claim 1 , wherein the first and second lateral engine link pins each integrate a ball joint link for allowing movement of the engine.
7. An aircraft comprising at least one rear engine fastener according to claim 1 .