US3949549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft gas turbine engine turbine blade cooling
Assignee: UK Secretary of State for Defence
•
Filing: 1974-11-08
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Granted: 1976-04-13
•
Expires: 1994-11-08
Abstract
Abstract An axial flow gas turbine engine, for use in a V/STOL aircraft, of the type having a rotatable nozzle for vectoring the direction of exhausting gas and a tapping for bleeding high pressure compressor outlet gas for use in an aircraft stabilising system, has controllable means for supplying compressor outlet gas to the turbine blades. The same valve is used for controlling supply of gas to the turbine blades and to the stabilising system.
Inventors
- 👤 Raymond Holl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:29
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/16; F02C7/18; F02C7/185; F02C6/00; F02C6/04; F02C6/06; F02C6/08; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
156 words
An axial flow gas turbine engine for use in a V/STOL aircraft having aircraft stabilisation jets comprising, compressor means driveen by turbine means, the turbine means having at least one row of turbine blades mounted on a turbine disc; at least one combustion chamber situated between the compressor means and the turbine means; an exhaust nozzle; a tapping downstream of the compressor means and upstream of the combustion chamber; outlet means for permitting gas from the tapping to flow to the aircraft stabilisation jets; means for supplying gas from the tapping to at least one row of turbine blades; and a valve movable between a closed position in which it prevents flow of gas through the tapping, a first open position in which it allows flow of gas to the turbine blades only, and a second open position in which it allows flow of gas to both the turbine blades and to the aircraft stabilisation jets.
Claim 2
Dependent Claim
156 words
An axial flow gas turbine engine for use in a V/STOL aircraft having aircraft stabilisation jets comprising, compressor means driveen by turbine means, the turbine means having at least one row of turbine blades mounted on a turbine disc; at least one combustion chamber situated between the compressor means and the turbine means; an exhaust nozzle; a tapping downstream of the compressor means and upstream of the combustion chamber; outlet means for permitting gas from the tapping to flow to the aircraft stabilisation jets; means for supplying gas from the tapping to at least one row of turbine blades; and a valve movable between a closed position in which it prevents flow of gas through the tapping, a first open position in which it allows flow of gas to the turbine blades only, and a second open position in which it allows flow of gas to both the turbine blades and to the aircraft stabilisation jets.
Claim 3
Dependent Claim
19 words
A gas turbine engine as claimed in claim 1 having cooling means between the tapping and the turbine blades.
Claim 4
Dependent Claim
17 words
A gas turbine engine as claimed in claim 2 wherein the cooling means comprise a heat exchanger.
Claim 5
Dependent Claim
17 words
A gas turbine engine as claimed in claim 2 wherein the cooling means comprise a coolant injector.
Claim 6
Dependent Claim
50 words
A gas turbine engine as claimed in claim 1 wherein the gas is supplied to the turbine blades radially outwardly from adjacent an axis of rotation of the turbine disc, said turbine disc having a cover plate spaced apart therefrom and a plurality of pressure augmenting fan blades mounted thereon.
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) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |