US5380152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable guide vane for turbines, compressors, or the like
Assignee: MTU Aero Engines AG
•
Filing: 1993-10-28
•
Granted: 1995-01-10
•
Expires: 2013-10-28
Abstract
Abstract A guide vane for an axial guide baffle of an axial flow engine, such as a jet engine, is adjustable in its position about a guide vane adjustment axis extending radially to a rotational engine axis. The guide vane has a vane body and an adjustment lever extending at an angle of about 90° away from the adjustment axis. The vane body, the adjustment lever, and at least one bearing journal form an integral one piece construction either of molded fiber composite material or of forged, e.g. drop forged, metal.
Inventors
- 👤 Siegfried Sikorski
- 👤 Michael Schober
- 👤 Reinhold Schoenacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:36
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/162; B; B29; B29D; B29D99/00; B29D99/0025; F01D5/00; F01D5/12; F01D5/28; F01D5/282; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
142 words
An adjustable guide vane for an axial guide baffle of an axial flow engine having a rotational axis, comprising a guide vane body having a longitudinal adjustment axis extending radially relative to said rotational axis of said engine, an adjustment lever (3) extending at an angle away from said adjustment axis and forming an integral one piece component with said vane body, said integral one piece component comprising at least one bearing journal positioned at an axially outer end of said integral one piece component, said bearing journal extending coaxially to said adjustment axis, said adjustment lever merging into said bearing journal, said vane body, bearing journal and lever being made of a fiber composite material so that fibers of said adjustment lever extend at least partly into said vane body to form a composite bond with fibers in said vane body.
Claim 2
Dependent Claim
142 words
An adjustable guide vane for an axial guide baffle of an axial flow engine having a rotational axis, comprising a guide vane body having a longitudinal adjustment axis extending radially relative to said rotational axis of said engine, an adjustment lever (3) extending at an angle away from said adjustment axis and forming an integral one piece component with said vane body, said integral one piece component comprising at least one bearing journal positioned at an axially outer end of said integral one piece component, said bearing journal extending coaxially to said adjustment axis, said adjustment lever merging into said bearing journal, said vane body, bearing journal and lever being made of a fiber composite material so that fibers of said adjustment lever extend at least partly into said vane body to form a composite bond with fibers in said vane body.
Claim 3
Dependent Claim
39 words
The adjustable guide vane of claim 1, wherein said fiber composite material comprises a resin matrix material and braided reinforcing fiber bundles embedded in said resin matrix material to form a three-dimensional bond between said braided reinforcing fiber bundles.
Claim 4
Dependent Claim
17 words
The adjustable guide vane of claim 2, wherein said reinforcing fibers extend unidirectionally in said fiber bundles.
Claim 5
Dependent Claim
17 words
The adjustable guide vane of claim 2, wherein said reinforcing fibers extend bi-directionally in said fiber bundles.
Claim 6
Dependent Claim
34 words
The adjustable guide vane of claim 1, wherein said fiber composite material of said adjustment lever comprises three-dimensionally braided fiber material in which fibers extend substantially in a longitudinal direction of said adjustment lever.
Claim 7
Dependent Claim
53 words
The adjustable guide vane of claim 1, wherein said fiber composite material of said adjustment lever comprises fiber material forming concentrically arranged fiber layers including outer fiber layers and inner fiber layers, whereby a number of said outer fiber layers extend from an outer end of said adjustment lever into said vane body.
Claim 8
Dependent Claim
41 words
The adjustable guide vane of claim 6, wherein said fiber material of said adjustment lever comprises fiber material tubes arranged concentrically with fibers of said inner fiber layers having a fiber orientation predominantly in a longitudinal direction of said adjustment lever.
Claim 9
Dependent Claim
41 words
The adjustable guide vane of claim 6, wherein said fiber material of said adjustment lever comprises fiber material layers arranged concentrically with fibers of said inner fiber layers having a fiber orientation predominantly in a longitudinal direction of said adjustment lever.
Claim 10
Dependent Claim
42 words
The adjustable guide vane of claim 1, wherein said fiber composite material of said at least one bearing journal comprises slanting reinforcing fibers that extend at an angle to said adjustment axis, said angle being within the range of 30° to 60°.
Claim 11
Dependent Claim
25 words
The adjustable guide vane of claim 9, wherein said slanting reinforcing fibers are positioned radially outwardly in said bearing journal relative to said adjustment axis.
Claim 12
Dependent Claim
25 words
The adjustable guide vane of claim 1, further comprising a metal bearing bushing, said at least one bearing journal extending through said metal bearing bushing.
Claim 13
Dependent Claim
54 words
The adjustable guide vane of claim 1, further comprising at least one fiber composite bearing bushing, said at least one bearing journal extending through said fiber composite bearing bushing so that fibers of said fiber composite bearing bushing, fibers of said bearing journal, and fibers of said vane body form a fiber composite bond.
Claim 14
Dependent Claim
32 words
The adjustable guide vane of claim 12, wherein said fiber composite bearing bushing comprises a flange portion, said vane body having a blade root merging at least partly into said flange portion.
Claim 15
Dependent Claim
15 words
The adjustable guide vane of claim 1, wherein said angle is an about 90° angle.
Claim 16
Dependent Claim
22 words
The adjustable guide vane of claim 1, wherein said adjustment lever forms an integral crank as an extension of said bearing journal.
References Cited (Backward Citations)
US2412365A
Cited
GB621175A
Cited
DE954637C
Cited
US3392958A
Cited
DE2644066A1
Cited
JPS5277908A
Cited
US4498790A
Cited
EP0196450A1
Cited
JPS635101A
Cited
US5039277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-01-09 | 1998-07-11 | 1999-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-09 | 2002-07-11 | 2003-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-09 | 2006-07-11 | 2007-01-10 | $7700.00 | Window Closed / Lapsed |