US3713293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion chamber and nozzle arrangement for a rocket engine
Assignee: MAN AG
•
Filing: 1970-10-08
•
Granted: 1973-01-30
•
Expires: 1990-10-08
Abstract
Abstract Combustion chamber and nozzle arrangement for a rocket engine having a plurality of main pipes bonded together to form an annular chamber having a nozzle configuration, and a secondary pipe disposed in each main pipe and secured to the inner walls thereof. The secondary pipe and the space between the secondary and main pipes form separate cooling feed and return ducts within each main pipe. The point of interconnection of the main pipes and secondary pipes is disposed outside of a circle formed by the centers of the pipes. In one embodiment of the invention, both the main pipes and the secondary pipes are of similar configuration. Alternative embodiments include filler members disposed between the outer wall of the secondary pipe and the inner wall of the main pipe for restricting the space between the two pipes.
Inventors
- 👤 M Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:48
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
53 words
A combustion chamber and nozzle arrangement of a rocket engine comprising: a plurality of main pipes bonded together to form an annular combustion chamber wall having a nozzle configuration, and a secondary pipe disposed in each main pipe and secured thereto, thereby forming separate cooling feed and return ducts within each main pipe.
Claim 2
Dependent Claim
53 words
A combustion chamber and nozzle arrangement of a rocket engine comprising: a plurality of main pipes bonded together to form an annular combustion chamber wall having a nozzle configuration, and a secondary pipe disposed in each main pipe and secured thereto, thereby forming separate cooling feed and return ducts within each main pipe.
Claim 3
Dependent Claim
53 words
A combustion chamber and nozzle arrangement of a rocket engine comprising: a plurality of main pipes bonded together to form an annular combustion chamber wall having a nozzle configuration, and a secondary pipe disposed in each main pipe and secured thereto, thereby forming separate cooling feed and return ducts within each main pipe.
Claim 4
Dependent Claim
53 words
A combustion chamber and nozzle arrangement of a rocket engine comprising: a plurality of main pipes bonded together to form an annular combustion chamber wall having a nozzle configuration, and a secondary pipe disposed in each main pipe and secured thereto, thereby forming separate cooling feed and return ducts within each main pipe.
Claim 5
Dependent Claim
25 words
An arrangement as defined in claim 1, wherein filler members are inserted between said secondary pipes and said main pipes to restrict the space therebetween.
Claim 6
Dependent Claim
33 words
An arrangement as defined in claim 2, wherein said main pipes and said secondary pipes are of oval configuration, the major axis of said oval shape extending substantially radially of said combustion chamber.
Claim 7
Dependent Claim
28 words
An arrangement according to claim 3 wherein said filler members are disposed outside of a circle formed by the centers of said major axes of said main pipes.
Claim 8
Dependent Claim
33 words
An arrangement as defined in claim 1 wherein the point of interconnection of said main pipes and secondary pipes is disposed outside of a circle formed by the centers of said main pipes.
Claim 9
Dependent Claim
26 words
An arrangement according to claim 1 wherein each of said secondary pipes are secured directly to the inner walls of respective ones of said main pipes.
Claim 10
Dependent Claim
45 words
An arrangement according to claim 1 wherein each of said secondary pipes are connected at the outer walls thereof to filler member means, and wherein said filler member means are disposed within said main pipes and are connected to inner walls of said main pipes.
Claim 11
Dependent Claim
32 words
An arrangement according to claim 7 wherein said filler member means include a plurality of separate filler pieces spaCed from one another along each of said respective main and associated secondary pipes.
Claim 12
Dependent Claim
24 words
An arrangement according to claim 8 wherein said filler pieces are disposed outside of a circle formed by the centers of said main pipes.
Claim 13
Dependent Claim
25 words
An arrangement according to claim 7 wherein said filler member means are disposed outside of a circle formed by the centers of said main pipes.
Claim 14
Dependent Claim
62 words
An arrangement according to claim 1 wherein each of said main pipes is completely closed around the circumference thereof, each of said respective secondary pipes being disposed completely inside of the closed circumference of the respective one of said main pipes, the outer surface of each respective secondary pipe being fixedly attached to an inner surface of the respective surrounding main pipe.
Claim 15
Dependent Claim
16 words
An arrangement according to claim 11 wherein said main and secondary pipes have similar cross-sectional shapes.
Claim 16
Dependent Claim
33 words
An arrangement according to claim 12 wherein each main pipe is attached at opposite sides of its outer circumference to two respective adjacent main pipes, one adjacent main pipe at each opposite side.
Claim 17
Dependent Claim
51 words
An arrangement according to claim 1 wherein said secondary pipes form one of said respective separate cooling feed and return ducts, and the space between the outer walls of said secondary pipes and the inner walls of respective main pipes forms the other of said separate cooling feed and return ducts.
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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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |