Method of manufacturing a duct for a gas turbine engine

Details Method of manufacturing a duct for a gas turbine engine Method of manufacturing a duct for a gas turbine engine

2011-01-11

2011-01-11

Bryant, David P (Department: 3726)

Metal working

Method of mechanical manufacture

Impeller making

C029S418000, C029S447000, C029S525140, C072S364000, C148S646000

Reexamination Certificate

active

07866041

ABSTRACT:
The present invention provided a method of manufacturing a duct for a gas turbine engine or the like from sheet metal material; the method comprising the steps of: fabricating a duct from sheet material (10,12,14) including rolling or folding metal sheet along ruled lines to form a ruled surface geometry approximately corresponding to at least part of a desired irregular final duct geometry; welding corresponding rolled or folded parts of the duct skin together and positioning the duct on a heat treatment fixture (30) having a shape corresponding to the said desired irregular duct geometry; the material of the heat treatment fixture having a greater thermal expansion coefficient than the duct material; heating the duct and fixture substantially to a stress relieving temperature of the duct material such that differential thermal expansion of the duct and fixture at the said stress relieving temperature causes the duct to distort and adopt the shape of the exterior surface of the fixture on which the duct is located.

REFERENCES:
patent: 3383900 (1968-05-01), Van Hartesveldt
patent: 3559278 (1971-02-01), Brandberg et al.
patent: 3986654 (1976-10-01), Hart et al.
patent: 4604785 (1986-08-01), Eddens
patent: 4822219 (1989-04-01), Wood et al.
patent: 4989433 (1991-02-01), Harmon et al.
patent: 5058411 (1991-10-01), Siemers et al.
patent: 5305359 (1994-04-01), Adamson et al.
patent: 5341665 (1994-08-01), Christophel et al.
patent: 5407494 (1995-04-01), Post
patent: 6241832 (2001-06-01), Miller
patent: 0 385 719 (1990-09-01), None

Affiliated with

Also associated with

Rating

Method of manufacturing a duct for a gas turbine engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of manufacturing a duct for a gas turbine engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing a duct for a gas turbine engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2639774