US3780533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite wall for a regeneratively cooled thrust chamber of a liquid propellant rocket engine
Assignee: United States Department of the Air Force
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Filing: 1972-05-17
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Granted: 1973-12-25
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Expires: 1992-05-17
Abstract
Abstract A composite wall, and a method of manufacturing it, for a regeneratively cooled thrust chamber of a liquid propellant rocket engine. The composite wall of the thrust chamber comprises: an outer wall component of high strength lightweight alloy; a middle wall component of nickel abutting with and joined to the outer wall component, with the middle wall having a plurality of lands thereon and a plurality of grooves therein; and, an inner wall component of material of high thermal conductivity and high temperature strength and ductility, with the inner wall component abutting with and joined to the lands on the middle wall component, thereby forming liquid propellant coolant passages of the channel type. The outer wall component, the middle wall component, and the inner wall component are integrated to form a unitary structure. The external surface of the outer wall component functions as the external structural shell surface of the thrust chamber, and the internal surface of the inner wall component functions as the internal combustion gas side surface of the thrust chamber. The inner wall component may be conveniently, easily, and economically replaced after its normal operational life.
Inventors
- 👤 D Huang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:31
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
302 words
A composite wall for a regeneratively cooled thrust chamber of a liquid propellant rocket engine, with said composite wall having therein liquid propellant coolant passages of the channel type, and with said composite wall having an external surface and an internal surface, and with said thrust chamber having an external structural shell surface defined by said external surface of said composite wall, and with said thrust chamber having an internal combustion gas side surface defined by said internal surface of said composite wall, and wherein said composite wall comprises: a. an outer wall component of high strength lightweight alloy, with said outer wall component having an external surface and an internal surface, and with said external surface functioning as the external surface of the composite wall and defining the external structural shell surface of said thrust chamber; b. a middle wall component of nickel, with said middle wall component having an external surface and an internal surface, and with said external surface of said middle wall component abutting with and joined to the internal surface of said outer wall component, and with the internal surface of said middle wall component having a plurality of lands thereon and a plurality of grooves therein; c. and, an inner wall component of material of high thermal conductivity and high temperature strength and ductility, and with said inner wall component having an external surface and an internal surface, and with said external surface of said inner wall component abutting with and joined to the internal surface of said middle wall component and to said lands thereon, thereby forming liquid coolant passages of the channel type, and with the internal surface of said inner wall component functioning as the internal surface of the composite wall and defining the internal combustion gas side surface of said thrust chamber.
Claim 2
Dependent Claim
302 words
A composite wall for a regeneratively cooled thrust chamber of a liquid propellant rocket engine, with said composite wall having therein liquid propellant coolant passages of the channel type, and with said composite wall having an external surface and an internal surface, and with said thrust chamber having an external structural shell surface defined by said external surface of said composite wall, and with said thrust chamber having an internal combustion gas side surface defined by said internal surface of said composite wall, and wherein said composite wall comprises: a. an outer wall component of high strength lightweight alloy, with said outer wall component having an external surface and an internal surface, and with said external surface functioning as the external surface of the composite wall and defining the external structural shell surface of said thrust chamber; b. a middle wall component of nickel, with said middle wall component having an external surface and an internal surface, and with said external surface of said middle wall component abutting with and joined to the internal surface of said outer wall component, and with the internal surface of said middle wall component having a plurality of lands thereon and a plurality of grooves therein; c. and, an inner wall component of material of high thermal conductivity and high temperature strength and ductility, and with said inner wall component having an external surface and an internal surface, and with said external surface of said inner wall component abutting with and joined to the internal surface of said middle wall component and to said lands thereon, thereby forming liquid coolant passages of the channel type, and with the internal surface of said inner wall component functioning as the internal surface of the composite wall and defining the internal combustion gas side surface of said thrust chamber.
Claim 3
Dependent Claim
17 words
The composite wall, as set forth in claim 1, wherein said inner wall component is of nickel.
Claim 4
Dependent Claim
18 words
The composite wall, as set forth in claim 1, wherein said inner wall component is of copper-silver alloy.
Claim 5
Dependent Claim
18 words
The composite wall, as set forth in claim 1, wherein said inner wall component is of molybdenum-rhenium alloy.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |