Device for supporting and securing a piece of equipment on an aircraft engine or nacelle case
View Patent ↗A device for supporting and securing a piece of equipment on an aircraft engine or nacelle case, including a vibration damper including a first part secured to the case and a second coaxial part rigidly connected to the piece of equipment, the damper associated with a safety member configured to hold the damper in place on the case in the event of damper failure or breakage. The safety member, which is independent of the damper, is mounted astride the damper and secured to the case.
1. A device for supporting and fixing equipment to a nacelle fairing or aircraft engine fairing, the device comprising:
at least one vibration damper including:
a first rigid part configured to be fixed to the fairing through a first fixation,
a second rigid part configured to be connected rigidly to the equipment, so as to suspend the equipment on the fairing, the second rigid part being structurally separated from the first rigid part, and
an elastically deformable material interposed between the first rigid part and the second rigid part, so that any one of the first rigid part and the second rigid part is movable with respect to the other of the first rigid part and the second rigid part by deforming said elastically deformable material; and
a rigid safety device structurally separated from the first and second rigid parts and configured to keep the damper in position on the fairing in an event of a failure or a breakage of at least one of the damper and said first fixation, to ensure support and fixation of the equipment, whereby the rigid safety device is independent of the damper and is mounted crosswise on the damper,
whereby the rigid safety device includes a middle rigid part that at least partly caps or covers the damper, and lateral opposite ends configured to be fixed to the fairing through a second fixation,
whereby the first fixation is independent of the second fixation.
2. A device according to claim 1 , wherein the middle rigid part of the rigid safety device includes a flat plate with a circular or rectangular shape.
3. A device according to claim 2 , wherein the plate includes, at two opposite ends of the plate, cables configured to be fixed to the fairing.
4. A device according to claim 2 , wherein the plate is directly fixed at two opposite ends to the fairing.
5. A device according to claim 2 , wherein the plate includes, at two opposite ends of the plate, lateral feet configured to be fixed to the fairing.
6. A device according to claim 5 , wherein the rigid safety device is a stirrup and has a general Ω shape, or an inverted U or V shape.
7. A device according to claim 5 , further comprising a gasket sandwiched between the middle rigid part of the rigid safety device and an upper end of the first rigid part of the damper, whereby the gasket is made from an elastically deformable material or a material with a high friction coefficient.
8. A device according to claim 7 , wherein the gasket is housed in a lower reinforcement of the middle rigid part of the rigid safety device.
9. A device according to claim 7 , wherein the middle rigid part of the rigid safety device includes a central orifice aligned with an orifice of the gasket to insert a screw to fix the rigid safety device to the first rigid part of the damper.
10. A device according to claim 5 , wherein the feet of the rigid safety device are noticeably parallel to each other or form between themselves an angle of between 30 and 90° approximately.
11. A device according to claim 5 , wherein each of the feet of the rigid safety device has a noticeable C or S shape in section.
12. A device according to claim 11 , wherein the feet each include at least one slit extending along an axis of the damper.
13. A device according to claim 5 , wherein the middle rigid part and the lateral feet of the rigid safety device includes noticeably flat plates, whereby the plates include, on sides of the plates, rounded edges oriented towards the damper.
14. A device according to claim 5 , wherein the feet include, at free ends of the feet, small plates or support edges on the fairing, whereby the small plates or edges contain orifices to insert screws to fix the rigid safety device to the fairing.
15. A device according to claim 5 , wherein the rigid safety device is of a single part and is made from metal or a composite material.
16. An aircraft engine, comprising:
a turbine engine surrounded coaxially by a nacelle; and
at least one piece of equipment suspended on a turbine engine fairing or a nacelle fairing by a device according to claim 1 .
17. A device according to claim 1 , wherein the middle rigid part of the rigid safety device is crossed by a first orifice through which freely passes a screwing part passing through a second orifice of the first rigid part, said screwing part pressing at a first end of the first rigid part, while being at a second end screwed to one of the fairing and a support structure fixed to the fairing.
18. A device according to claim 1 , wherein the elastically deformable material is interposed between the first rigid part and the second rigid part so that any one of the first rigid part and the second rigid part is movable in any direction with respect to the other of the first rigid part and the second rigid part by deforming said elastically deformable material.
19. A device for supporting and fixing equipment to a nacelle fairing or aircraft engine fairing, the device comprising:
at least one vibration damper including:
a first rigid part configured to be fixed to the fairing through a first fixation,
a second rigid part configured to be connected rigidly to the equipment, so as to suspend the equipment on the fairing, the second rigid part including a hollow housing surrounding a portion of the first rigid part, and
an elastically deformable material completely surrounding the portion of the first rigid part, by filling the hollow housing around said portion of the first rigid part, so that any one of the first rigid part and the second rigid part is movable with respect to the other of the first rigid part and the second rigid part by deforming said elastically deformable material; and
a rigid safety device configured to keep the damper in position on the fairing in an event of a failure or a breakage of at least one of the damper and said first fixation, to ensure support and fixation of the equipment, whereby the rigid safety device is independent of the damper and is mounted crosswise on the damper,
whereby the rigid safety device includes a middle rigid part that at least partly caps or covers the damper, and lateral opposite ends configured to be fixed to the fairing through a second fixation,
whereby the first fixation is independent of the second fixation.
20. A device according to claim 19 , wherein the first rigid part, the second rigid part, and the rigid safety device are respective separately manufactured rigid elements.