Patent US4864818A successfully refreshed from Google Patents.
US4864818A
Expired / Lapsed
US
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Augmentor liner construction
Assignee: RTX Corp
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Filing: 1988-04-07
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Granted: 1989-09-12
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Expires: 2008-04-07
Abstract
Abstract An augmentor liner 16 for a gas turbine engine is formed of thin perforated material and has pressurized cooling air surrounding it. A stiffner ring 42 is supporter from the liner with radially flexible straps 52, while relative radial displacement is limited by clips 50, 44. The liner is restrained from buckling while permitting thermal expansion.
Inventors
- 👤 James J. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:16
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/78; F02K1/80; F02K1/82; F02K1/822; F23; F23R; F23R3/00; F23R3/42; F23R3/60; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
An augmentor liner for a gas turbine engine having a pressurized supply of cooling air to the exterior of said liner comprising: a cylindrical liner of thin perforated material; at least one stiffner ring surrounding and spaced from the outer surface of said liner; a plurality of straps, each secured to both said ring and said liner and circumferentially extending at an acute angle with respect to both said ring and said liner, each of said straps extending in the same direction and being secured to at least one of said ring and said liner by circumferentially spaced connections; and a plurality of lost radial motion connectors between said liner and said ring.
Claim 2
Dependent Claim
113 words
An augmentor liner for a gas turbine engine having a pressurized supply of cooling air to the exterior of said liner comprising: a cylindrical liner of thin perforated material; at least one stiffner ring surrounding and spaced from the outer surface of said liner; a plurality of straps, each secured to both said ring and said liner and circumferentially extending at an acute angle with respect to both said ring and said liner, each of said straps extending in the same direction and being secured to at least one of said ring and said liner by circumferentially spaced connections; and a plurality of lost radial motion connectors between said liner and said ring.
Claim 3
Dependent Claim
17 words
An augmentor liner as in claim 1: said liner having a plurality of longitudinally spaced circumferential corrugations.
Claim 4
Dependent Claim
111 words
An augmentor liner as in claim 1: each of said lost motion connections comprising: first clips rigidly secured to said ring interior; second clips rigidly secured to said liner exterior; each of said first and second clips radially engaged to limit inward movement of said liner with respect to said ring; and said first and second clips when at the same temperature having clearance for radially outward movement of said liner with respect to said ring, and a clearance for rotational movement of said liner with respect to said ring in the direction from a point securing said strap to said ring to a point securing said strap to said liner.
Claim 5
Dependent Claim
20 words
An augmentor liner as in claim 3: each of said first clips being an extension of one of said straps.
Claim 6
Dependent Claim
21 words
An augmentor liner as in claim 4: each of said straps being joined in said ring at two circumferentially space locations.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |