Front fastening device for aircraft engine
View Patent ↗A front attachment device for attaching an aircraft engine to an aircraft pylon includes an upper brace fitted with elements rigidly fastened to the pylon and first and a second connecting rods, each connected to the engine, via a first ball joint connection at one end portion and to the upper brace via a second ball joint connection on the other end portion. The device further includes in each connecting rod a third stand-by link. The first and second connecting rods are interchangeable with each other.
1. A device for attaching a turbo engine to an aircraft pylon including an upper brace fitted with rigid fastening means to the pylon, first and second connecting rods, each connected to the engine, via a first ball joint connection at a first portion thereof and to the upper brace via a second ball joint connection at a second portion thereof, wherein each connecting rod includes a stand-by link, and the first and second connecting rods are interchangeable with each other;
wherein each stand-by link comprises connections with a pivot pin mounted with a backlash in a housing and both backlashes are identical.
2. The device according to claim 1 , wherein each of the stand-by links connects the corresponding connecting rod to the upper brace.
3. The device according to claim 1 , wherein each of the stand-by links connects the corresponding connecting rod to the engine.
4. The device according to claim 1 , wherein the first and second connecting rods are identical.
5. The device according to claim 1 , wherein the connecting rods are curved in shape and the stand-by link and the portions of the connecting rods corresponding to the first and second ball joint connections form an angle with respect to one another.
6. An assembly system with a front attachment, a rear attachment and connecting thrust rods, the front attachment comprising the device according to claim 1 .
7. The device according to claim 1 , wherein, for each of said first and second connecting rods, said pin is mounted in said housing with said backlash defining a substantial clearance around an entire periphery of said pin.
8. The device according to claim 1 , wherein, for each of said first and second connecting rods, said housing, in which said pin is mounted in said stand-by link, is circular.
9. The device according to claim 1 , wherein, for each of said first and second connecting rods, said first and second ball joint connections and said stand-by link are not aligned.
10. The device according to claim 9 , wherein each of said first and second connecting rods has a shape of a boomerang.
11. The device according to claim 10 , wherein, for each of said first and second connecting rods, said stand-by link is not between said first ball joint connection and said second ball joint connection.
12. The device according to claim 1 , wherein each of said first and second connecting rods has a shape of a boomerang.
13. The device according to claim 1 , wherein, for each of said first and second connecting rods, said stand-by link is not between said first ball joint connection and said second ball joint connection.
14. The device according to claim 1 , wherein each of said stand-by links remains inactive and does not transmit any loads during normal operation of said device, and becomes active and transmits loads in case of breakage of parts of the device.