US3869864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chambers for gas turbine engines
Assignee: Northrop Grumman Properties Ltd
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Filing: 1973-06-11
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Granted: 1975-03-11
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Expires: 1993-06-11
Abstract
Abstract A combustion chamber for a gas turbine engine comprises a flame tube surrounded by an air passage, fuel sprayer(s) at one end of the flame tube and a combustion gas outlet at the end. A number of sets of apertures are formed by corrugated portions of the wall to cause air entering the flame tube to flow along the wall thereof. Baffles project from the wall and are disposed in the flow path of the air flowing along the wall. Projections extend from the baffles substantially parallel to the wall and towards the apertures formed by the respective corrugated portions.
Inventors
- 👤 George Edward Bunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:13
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/10; F23R3/12; F23R3/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
A combustion chamber for a gas turbine engine, comprising a flame tube, an air supply passage separated from said flame tube by a wall thereof, means defining a plurality of apertures in said wall providing communication between said air supply passage and the interior of said flame tube, each of said apertures being adapted to cause a flow of air along said wall within said flame tube, baffles projecting from said wall within said flame tube for deflecting air passed, in use, along said wall from at least some of said apertures, and projections spaced from said wall and extending from said baffles in a direction transverse to the direction of extent of said baffles whereby circulation of gas, in use, is established and maintained in the desired flow pattern.
Claim 2
Dependent Claim
130 words
A combustion chamber for a gas turbine engine, comprising a flame tube, an air supply passage separated from said flame tube by a wall thereof, means defining a plurality of apertures in said wall providing communication between said air supply passage and the interior of said flame tube, each of said apertures being adapted to cause a flow of air along said wall within said flame tube, baffles projecting from said wall within said flame tube for deflecting air passed, in use, along said wall from at least some of said apertures, and projections spaced from said wall and extending from said baffles in a direction transverse to the direction of extent of said baffles whereby circulation of gas, in use, is established and maintained in the desired flow pattern.
Claim 3
Dependent Claim
130 words
A combustion chamber for a gas turbine engine, comprising a flame tube, an air supply passage separated from said flame tube by a wall thereof, means defining a plurality of apertures in said wall providing communication between said air supply passage and the interior of said flame tube, each of said apertures being adapted to cause a flow of air along said wall within said flame tube, baffles projecting from said wall within said flame tube for deflecting air passed, in use, along said wall from at least some of said apertures, and projections spaced from said wall and extending from said baffles in a direction transverse to the direction of extent of said baffles whereby circulation of gas, in use, is established and maintained in the desired flow pattern.
Claim 4
Dependent Claim
130 words
A combustion chamber for a gas turbine engine, comprising a flame tube, an air supply passage separated from said flame tube by a wall thereof, means defining a plurality of apertures in said wall providing communication between said air supply passage and the interior of said flame tube, each of said apertures being adapted to cause a flow of air along said wall within said flame tube, baffles projecting from said wall within said flame tube for deflecting air passed, in use, along said wall from at least some of said apertures, and projections spaced from said wall and extending from said baffles in a direction transverse to the direction of extent of said baffles whereby circulation of gas, in use, is established and maintained in the desired flow pattern.
Claim 5
Dependent Claim
72 words
The combustion Chamber according to claim 1, wherein said baffles comprise strips each of which is attached at one side thereof to said wall within said flame tube and is provided with a series of spaced recesses at the other side thereof, and said projections extend from said baffles at the bases of said recesses in a direction upstream of the respective baffles relative to the air whose circulation is promoted thereby.
Claim 6
Dependent Claim
76 words
The combustion chamber according to claim 1, wherein some of said apertures are adapted to cause a flow of air along said wall within said flame tube by being provided with baffles which extend substantially parallel to said wall in the vicinity of said apertures and some of said apertures are formed in portions of said wall which extend transversely to wall portions on either side thereof so that air is introduced along the last-mentioned portions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |