Device for the attachment of an engine to an aircraft

#The invention concerns a device designed for attaching an aircraft engine to a pylon secured to a structural aircraft section such as the wing or fuselage.

#More precisely, the invention concerns an attachment device designed to transmit to the aircraft structure, via the engine pylon, the loads acting on the engine in the lateral and vertical directions relative to the longitudinal axis of the engine, for the case where the engine is suspended under the wing. When the engine is mounted on the side of the fuselage, the attachment device concerned by the invention, is designed to transmit the loads applied in the lateral and vertical directions in relation to the longitudinal axis of the said engine.

#In the remainder of the text, only the case of an engine suspended beneath an aircraft wing is described. The description below nevertheless applies also to the case of an engine mounted on the side of the fuselage, by replacing the loads acting in the vertical direction with loads acting in the horizontal direction.

#A description is provided below, as an illustrative but non limiting example, of a preferred production method for the invention, referring to the diagrams provided in the appendix, in which:

#FIG. 1 is a three-quarter rear view, in perspective, representing a device for attaching an aircraft engine to a pylon, in accordance with the invention ; and

#FIG. 2 is a side view on a larger scale, in perspective and cut-away, of the device shown in FIG. 1.

#As illustrated schematically in FIG. 1, an attachment device (10) in accordance with the invention is inserted between an engine pylon (12) and an aircraft engine (14), at the front or at the rear of the said engine.

#The engine pylon (12) is designed to be attached to an item of the aircraft structure, such as a section of the wing or fuselage. This attachment is provided by conventional means, which are not part of the invention. To facilitate understanding of FIG. 1, the top part of the engine pylon (12) including the means of attachment of the latter to the aircraft structure, has intentionally been omitted. More precisely, FIG. 1 simply shows the lower spar (16) of the pylon (12).

#The attachment device (10) acts as an interface between the aircraft engine (14) and the engine pylon (12). More precisely, in the production method represented as an example in the figures, the function of the attachment device (10) is to take up the loads exerted in the lateral and vertical directions (in the case of an engine suspended from a wing) in relation to the longitudinal axis of the engine (14), to retransmit them to the aircraft structure via the pylon (12). Another function of the attachment device (10) is to transfer the loads, even in the event of failure of any part included in the device.