US3595025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rocket engine combustion chamber
Assignee: Airbus Defence and Space GmbH
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Filing: 1969-07-09
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Granted: 1971-07-27
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Expires: 1989-07-09
Abstract
Abstract A combustion chamber construction includes an inner wall having longitudinally extending cooling channels defined in the exterior thereof and an outer wall which is bonded to the inner wall by galvanizing, both the inner wall and outer wall are made of a single piece of an oxygen-free copper or equivalent material such as silver or molybdenum. The cooling channels are advantageously cut in accordance with the method of the invention such as by machining and formed with the least wall thickness in the area of the thrust nozzle and with the relatively greatest wall thickness in the area of the discharge of the combustion chamber. The internal wall thickness at the head portion of the combustion chamber is made of medium thickness. After the cooling channels are machined into the inner wall portion the channels are filled with a filler material which is electrically conductive and has a low melting point so that upon galvanizing it is melted out. In some instances an intermediate layer is positioned between an outer relatively thick and strong layer and inner wall of the combustion chamber, and the three layers are galvanized together.
Inventors
- 👤 Karl Stockel
- 👤 Carl-Helmut Dederra
- 👤 Kuno Dreyer
- 👤 Just Sohlemann
- 👤 Michael Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:31
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/008; F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64; Y; Y10; Y10S; Y10S29/00; Y10S29/012; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
79 words
A combustion chamber construction for a liquid-fueled rocket engine having a thrust nozzle with a discharge opening comprising an inner wall body having a plurality of longitudinally extending cooling channels defined in the exterior thereof which are adapted to be filled with at least one fuel component, said inner wall being made of a single piece of a metal material, and an exterior wall extending around the exterior of said inner wall and being galvanized to said inner wall.
Claim 2
Dependent Claim
79 words
A combustion chamber construction for a liquid-fueled rocket engine having a thrust nozzle with a discharge opening comprising an inner wall body having a plurality of longitudinally extending cooling channels defined in the exterior thereof which are adapted to be filled with at least one fuel component, said inner wall being made of a single piece of a metal material, and an exterior wall extending around the exterior of said inner wall and being galvanized to said inner wall.
Claim 3
Dependent Claim
14 words
A combustion chamber, according to claim 1, wherein said exterior wall comprises oxygen-free copper.
Claim 4
Dependent Claim
27 words
A combustion chamber, according to claim 1, wherein said inner wall and said exterior wall consists of one of the following materials: oxygen-free copper, silver, and molybdenum.
Claim 5
Dependent Claim
15 words
A combustion chamber, according to claim 1, wherein said exterior wall comprises a nickel material.
Claim 6
Dependent Claim
42 words
A combustion chamber, according to claim 1, wherein said cooling channels are of a minimum cross section adjacent said nozzle neck portion and the maximum cross section adjacent said nozzle discharge portion and of intermediate cross-sectional area adjacent said nozzle head portion.
Claim 7
Dependent Claim
36 words
A method, according to claim 5, wherein the cooling conduits are filled with a filler material which is electrically conductive and has a low melting point before the galvanizing of the cover to the interior wall.
Claim 8
Dependent Claim
51 words
A combustion chamber, according to claim 1, including an intermediate layer galvanized to the interior wall and to the exterior wall and consists of at least one of the following: oxygen-free copper, silver and molybdenum, said exterior wall being a thick-walled pressure jacket of a metal material having high strength characteristic.
Claim 9
Dependent Claim
45 words
A combustion chamber, according to claim 1, wherein said thrust nozzle has a neck portion and wherein said cooling channels are formed such that said interior wall has the minimum thickness adjacent the nozzle neck portion and the maximum thickness adjacent the nozzle discharge portion.
Claim 10
Independent Claim
69 words
A method of forming a combustion chamber comprising forming the interior wall of a single piece of at least one of the following materials: copper, molybdenum, and silver, machining a plurality of longitudinally extending cooling channels into the exterior surface of sAid interior wall, surrounding the interior wall with a cover of a material similar to the interior wall and bonding the cover to the interior wall by galvanizing.
Claim 11
Independent Claim
69 words
A method of forming a combustion chamber comprising forming the interior wall of a single piece of at least one of the following materials: copper, molybdenum, and silver, machining a plurality of longitudinally extending cooling channels into the exterior surface of sAid interior wall, surrounding the interior wall with a cover of a material similar to the interior wall and bonding the cover to the interior wall by galvanizing.
Claim 12
Dependent Claim
14 words
The combustion chamber according to claim 1, wherein said metal material comprises oxygen-free copper.
Claim 13
Dependent Claim
26 words
A combustion chamber according to claim 1, wherein said exterior wall is a thick-walled pressure jacket of a nickel metal material having a high strength characteristic.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |