US3897316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing a 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: 1973-10-05
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Granted: 1975-07-29
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Expires: 1993-10-05
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
- 👤 David H Huang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:42
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
365 words
THE METHOD OF MANUFACTURING A COMPOSITE WALL FOR A REGENERATIVELY COOLED THRUST CHAMBER OF A LIQUID PROPELLANT ROCKET ENGINE, WITH SAID COMPOSITE WALL HAVING THEREIN LIQUID PROPELLANT COOLING PASSAGES OF THE CHANNEL TYPE, AND WITH SAID COMPOSITE WALL HAVING AN EXTERNAL SURFACE AND AN INTERNAL SURFACE, AND WITH SAID THURST CHAMBER HAVING AN EXTERNAL STRUCTUAL SHELL SURFACE DEFINED BY SAID EXTERNAL SURFACE OF SAID COMPOSITE WALL, AND WITH SID THURST CHAMBER HAVING AN NTERNAL COMBUSTION GAS SIDE SURFACE DEFINED BY SAID INTERNAL SURFACE OF SAID COMPOSITE WALL, COMPRISING THE STEPS OF: A. FORMING AN OUTER WALL COMPONENT OF HIGH STRENGTH LIGHTWEIGHT ALLOY, WITH SAID OUTERWALL COMPONENT HAVING AN EXTERNAL SURFACE AND AN INTERNAL SURFACE, AND WITH SAID EXTERNALSURFACE FUNCTIONING AS THE EXTERNAL SURFACE OF THE COMPOSITE WELL AND DEFINING THE EXTERNAL STRUCTUAL SHELL SURFACE OF SAID THRUST CHAMBER, B. FORMING A MIDDLE WALL COMPONENT OF NICKEL, WITH SAID MIDDLE WALL COMPONENT HAVING AN EXTERNAL SURFACE SHAPED TO MATE WITH THE INTERNAL SURFACE OF SAID OUTER WALL COMPONENT, AND WITH SAID MIDDLE WALL COMPONENT HAVING AN INTERNAL SURFACE, C. MATING AND JOINING SAID MIDDLE WALL COMPONENT TO SAID OUTER WALL COMPONENT, WITH THE EXTERNAL SURFACE OF SAID MIDDLE WALL COMPONENT ABUTTING THE INTERNAL SURFACE OF SAID OUTER WALL COMPONENT, D. FORMING A PLURALITY OF GROOVES IN THE INTERNAL SURFACE OF SAID MIDDLE WALL COMPONENT, WHEREBY LANDS ARE FORMED ON SAID INTERNAL SURFACE BETWEEN SAID GROOVES, E. FORMING A REPLACEABLE INNER WALL COMPONENT FROM A PREFORMED SHEET OF MATERIAL OF HIGH THERMAL CONDUCTIVITY AND HIGH TEMPERATURE STRENGTH AND DUCTILITY WITH SAID INNER WALL COMPONENT HAVING AN EXTERNAL SURFACE SHAPED TO MATE WITH THE INTERNAL SURFACE WHICH SAID MIDDLE WALL COMPONENT HAD PRIOR TO THE FORMATION OF GROOVES THEREIN, AND WITH SAID INNER WALL COMPONENT HAVING AN INTERNAL SURFACEWHICH FUNCTIONS AS THE INTERNAL SURFACE OF THE COMPOSITE WALL AND WHICH DEFINES THE INTERNAL COMBUSTION GAS SIDE SURFACE OF SAID THRUST CHAMBER, F. AND MATING AND JOINING SAID INNER WALL COMPONENT TO SAID MIDDLE WALL COMPONENT, WITH THE EXTERNAL SURFACE OF SAID INNER WALL COMPONENT ABUTTING THE LANDS FORMED ON THE INTERNAL SURFACE OF SAID MIDDLE WALL COMPONENT, WHEREBY LIQUID PROPELLANT COOLANT PASSAGES OF THE CHANNEL TYPE ARE FORMED.
Claim 2
Independent Claim
365 words
THE METHOD OF MANUFACTURING A COMPOSITE WALL FOR A REGENERATIVELY COOLED THRUST CHAMBER OF A LIQUID PROPELLANT ROCKET ENGINE, WITH SAID COMPOSITE WALL HAVING THEREIN LIQUID PROPELLANT COOLING PASSAGES OF THE CHANNEL TYPE, AND WITH SAID COMPOSITE WALL HAVING AN EXTERNAL SURFACE AND AN INTERNAL SURFACE, AND WITH SAID THURST CHAMBER HAVING AN EXTERNAL STRUCTUAL SHELL SURFACE DEFINED BY SAID EXTERNAL SURFACE OF SAID COMPOSITE WALL, AND WITH SID THURST CHAMBER HAVING AN NTERNAL COMBUSTION GAS SIDE SURFACE DEFINED BY SAID INTERNAL SURFACE OF SAID COMPOSITE WALL, COMPRISING THE STEPS OF: A. FORMING AN OUTER WALL COMPONENT OF HIGH STRENGTH LIGHTWEIGHT ALLOY, WITH SAID OUTERWALL COMPONENT HAVING AN EXTERNAL SURFACE AND AN INTERNAL SURFACE, AND WITH SAID EXTERNALSURFACE FUNCTIONING AS THE EXTERNAL SURFACE OF THE COMPOSITE WELL AND DEFINING THE EXTERNAL STRUCTUAL SHELL SURFACE OF SAID THRUST CHAMBER, B. FORMING A MIDDLE WALL COMPONENT OF NICKEL, WITH SAID MIDDLE WALL COMPONENT HAVING AN EXTERNAL SURFACE SHAPED TO MATE WITH THE INTERNAL SURFACE OF SAID OUTER WALL COMPONENT, AND WITH SAID MIDDLE WALL COMPONENT HAVING AN INTERNAL SURFACE, C. MATING AND JOINING SAID MIDDLE WALL COMPONENT TO SAID OUTER WALL COMPONENT, WITH THE EXTERNAL SURFACE OF SAID MIDDLE WALL COMPONENT ABUTTING THE INTERNAL SURFACE OF SAID OUTER WALL COMPONENT, D. FORMING A PLURALITY OF GROOVES IN THE INTERNAL SURFACE OF SAID MIDDLE WALL COMPONENT, WHEREBY LANDS ARE FORMED ON SAID INTERNAL SURFACE BETWEEN SAID GROOVES, E. FORMING A REPLACEABLE INNER WALL COMPONENT FROM A PREFORMED SHEET OF MATERIAL OF HIGH THERMAL CONDUCTIVITY AND HIGH TEMPERATURE STRENGTH AND DUCTILITY WITH SAID INNER WALL COMPONENT HAVING AN EXTERNAL SURFACE SHAPED TO MATE WITH THE INTERNAL SURFACE WHICH SAID MIDDLE WALL COMPONENT HAD PRIOR TO THE FORMATION OF GROOVES THEREIN, AND WITH SAID INNER WALL COMPONENT HAVING AN INTERNAL SURFACEWHICH FUNCTIONS AS THE INTERNAL SURFACE OF THE COMPOSITE WALL AND WHICH DEFINES THE INTERNAL COMBUSTION GAS SIDE SURFACE OF SAID THRUST CHAMBER, F. AND MATING AND JOINING SAID INNER WALL COMPONENT TO SAID MIDDLE WALL COMPONENT, WITH THE EXTERNAL SURFACE OF SAID INNER WALL COMPONENT ABUTTING THE LANDS FORMED ON THE INTERNAL SURFACE OF SAID MIDDLE WALL COMPONENT, WHEREBY LIQUID PROPELLANT COOLANT PASSAGES OF THE CHANNEL TYPE ARE FORMED.
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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |