Method for mounting aircraft engine

Patent metadata

Field	Value
Publication number	US-10053235-B2
Application number	US-201514812129-A
Country	US
Kind code	B2
Filing date	Jul 29, 2015
Priority date	Aug 25, 2014
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

The present invention provides a method for mounting an aircraft engine, which enables to speed up a mounting work by facilitating positioning of an engine with respect to a pylon. The method for mounting an aircraft engine, including: lifting up an engine of an aircraft toward a pylon that is a mounting object; and when the engine reaches a predetermined position, fixing the engine to the pylon, wherein guides that perform horizontal positioning of the engine with respect to the pylon are respectively provided on a front side and a rear side of the engine.

First claim

What is claimed is:

1. A method for mounting an aircraft engine, comprising: lifting up an engine of an aircraft toward a pylon that is a mounting object; and when the engine reaches a predetermined position, fixing the engine to the pylon,
wherein a guide that performs horizontal positioning of the engine with respect to the pylon is provided on each of a front side and a rear side of the engine,
wherein the engine includes a shear pin that transmits thrust of the engine to the pylon,
the pylon includes a pin retainer into which the shear pin is fitted, and
the guide is provided close to the shear pin and the guide extends substantially in parallel with the shear pin, and

wherein the engine includes an engine mount including the shear pin,
the pylon includes a pylon mount including the pin retainer, and
the guide is laid between the engine mount and the pylon mount.

2. The method for mounting an aircraft engine according to claim 1 ,
wherein the guide is a bolt-shaped member with a shaft portion and a head portion.

3. The method for mounting an aircraft engine according to claim 1 ,
wherein the guide is liftable in a vertical direction integrally with the engine mount.

4. The method for mounting an aircraft engine according to claim 1 ,
wherein the guide is a bolt-shaped member with a shaft portion and a head portion, and the shaft portion has a male thread on a distal end portion thereof,
the engine mount has a female thread with which the male thread of the guide is engaged,
the pylon mount has a through-hole through which the shaft portion of the guide reciprocates in a vertical direction, and
the pylon mount and the engine mount restrict a horizontal movement of the guide, and thereby the guide performs the horizontal positioning of the engine with respect to the pylon.

5. The method for mounting an aircraft engine according to claim 1 ,
wherein the guide is a bolt-shaped member with a shaft portion and a head portion,
the pylon mount has a first through-hole through which the shaft portion of the guide reciprocates in a vertical direction,
the pylon has a second through-hole through which the shaft portion and the head portion of the guide reciprocates in a vertical direction, and the second through-hole is formed so as to lead to the first through-hole.

6. The method for mounting an aircraft engine according to claim 1 ,
wherein the engine is a turbofan engine.

7. A method for mounting an aircraft engine, comprising: lifting up an engine of an aircraft toward a pylon that is a mounting object and when the engine reaches a predetermined position, fixing the engine to the pylon,
wherein a guide that performs horizontal positioning of the engine with respect to the pylon is provided on each of a front side and a rear side of the engine,
wherein the engine includes a shear pin that transmits thrust of the engine to the pylon,
the pylon includes a pin retainer into which the shear pin is fitted, and
the guide is provided close to the shear pin,

wherein the engine includes an engine mount including the shear pin,
the pylon includes a pylon mount including the pin retainer, and
the guide is laid between the engine mount and the pylon mount, and

wherein a planar gauge that confirms parallelism with the engine mount or the pylon mount is interposed between the engine mount and the pylon mount during the lifting-up.

8. The method for mounting an aircraft engine according to claim 7 ,
wherein a plurality of types of planar gauges having different thicknesses are used.

9. The method for mounting an aircraft engine according to claim 8 ,
wherein the plurality of types of planar gauges having different thicknesses are originally laminated and interposed between the engine mount and the pylon mount, and
the planar gauges are withdrawn sequentially from a planar gauge having a larger thickness according to a degree in which the engine is lifted up.

10. The method for mounting an aircraft engine according to claim 8 ,
wherein a procedure in which a first planar gauge is originally interposed between the engine mount and the pylon mount, and is withdrawn after lifting up the engine by a predetermined amount, and instead, a second planar gauge thinner than the first planar gauge is interposed between the engine mount and the pylon mount, and is withdrawn after lifting up the engine by a predetermined amount is repeated a required number of times.

Assignees

• Mitsubishi Aircraft Corp

Inventors

• Aoki Makoto
• Yamazaki Kenichiro
• Tateiwa Jingo

Classifications

• B64F5/0036 Primary

  Operations & Transport · mapped topic

• F05D2230/68

  using auxiliary equipment for lifting or holding · CPC title

• B64F5/50 Primary

  Handling or transporting aircraft components · CPC title

• F05D2230/64

  using positioning or alignment devices for aligning or centring, e.g. pins · CPC title

• F01D25/285

  Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures · CPC title