Patent US3733826A successfully refreshed from Google Patents.
US3733826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cooled ram air reaction propulsion engine
Assignee: Texaco Experiment Inc
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Filing: 1964-02-10
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Granted: 1973-05-22
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Expires: 1984-02-10
Abstract
Abstract 1. A reaction propulsion system including means providing a combustion chamber having an impulse expansion outlet nozzle therefrom, means providing a ram air intake, means directing air from the ram air intake to the combustion chamber, a fuel storage chamber, multi-stage heat exchange means in heat exchange contact with the air in said air directing means, means directing fuel from said storage chamber through a first stage of said heat exchange means, an air compressor providing a portion of the air directing means between the heat exchange means and said combustion chamber, a multi-stage direct expansion turbine for driving said compressor, means directing at least a portion of fuel from the first stage of said heat exchange means through a first stage of said direct expansion turbine and then into a second stage of said heat exchange means, means directing at least a portion of fuel from the second stage of said heat exchange means through a second stage of said direct expansion turbine and then into said combustion chamber, a regenerative heat exchanger in said combustion chamber, and means for selectively directing a portion of the fuel passing through the first stage of said heat exchange means to said regenerative heat exchanger and then to the first stage of said turbine.
Inventors
- 👤 R Wolf
- 👤 Gann R Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:48
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/12; F02C7/14; F02C7/141; F02C7/143; F02C7/08; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
211 words
A reaction propulsion system including means providing a combustion chamber having an impulse expansion outlet nozzle therefrom, means providing a ram air intake, means directing air from the ram air intake to the combustion chamber, a fuel storage chamber, multi-stage heat exchange means in heat exchange contact with the air in said air directing means, means directing fuel from said storage chamber through a first stage of said heat exchange means, an air compressor providing a portion of the air directing means between the heat exchange means and said combustion chamber, a multi-stage direct expansion turbine for driving said compressor, means directing at least a portion of fuel from the first stage of said heat exchange means through a first stage of said direct expansion turbine and then into a second stage of said heat exchange means, means directing at least a portion of fuel from the second stage of said heat exchange means through a second stage of said direct expansion turbine and then into said combustion chamber, a regenerative heat exchanger in said combustion chamber, and means for selectively directing a portion of the fuel passing through the first stage of said heat exchange means to said regenerative heat exchanger and then to the first stage of said turbine.
Claim 2
Dependent Claim
211 words
A reaction propulsion system including means providing a combustion chamber having an impulse expansion outlet nozzle therefrom, means providing a ram air intake, means directing air from the ram air intake to the combustion chamber, a fuel storage chamber, multi-stage heat exchange means in heat exchange contact with the air in said air directing means, means directing fuel from said storage chamber through a first stage of said heat exchange means, an air compressor providing a portion of the air directing means between the heat exchange means and said combustion chamber, a multi-stage direct expansion turbine for driving said compressor, means directing at least a portion of fuel from the first stage of said heat exchange means through a first stage of said direct expansion turbine and then into a second stage of said heat exchange means, means directing at least a portion of fuel from the second stage of said heat exchange means through a second stage of said direct expansion turbine and then into said combustion chamber, a regenerative heat exchanger in said combustion chamber, and means for selectively directing a portion of the fuel passing through the first stage of said heat exchange means to said regenerative heat exchanger and then to the first stage of said turbine.
Claim 3
Dependent Claim
45 words
The invention defined in claim 1 wherein control for said means for selectively directing a portion of the fuel from said first heat exchanger stage through the regenerative heat exchanger is provided by the temperature of the fuel passing from said first heat exchanger stage.
Claim 4
Dependent Claim
44 words
An air breathing reaction propulsion system according to claim 1 further includIng additional heat exchange means in heat exchange contact with said air compressor, and means directing fuel exiting from said first stage of said multi-stage heat exchanger through such additional heat exchange means.
Claim 5
Dependent Claim
43 words
An air breathing reaction propulsion system according to claim 1 further including additional heat exchange means in heat exchange contact with said air compressor, and means directing fuel exiting from said first stage of said multi-stage turbine through such additional heat exchange means.
Claim 6
Dependent Claim
44 words
An air breathing reaction propulsion system according to claim 1 further including additional heat exchange means in heat exchange contact with said air compressor, and means directing fuel exiting from said second stage of said multi-stage heat exchanger through such additional heat exchange means.
Claim 7
Dependent Claim
37 words
A reaction propulsion system according to claim 1 including, in combination therewith, a rocket fuel source, and means directing the expansion products from said rocket fuel source into the impulse expansion outlet nozzle of said combustion chamber.
Claim 8
Dependent Claim
211 words
A reaction propulsion system including means providing a combustion chamber having an impulse expansion outlet nozzle therefrom, means providing a ram air intake, means directing air from the ram air intake into the combustion chamber, a fuel storage chamber, heat exchange means in heat exchange contact with the air in the air directing means, means for directing a portion of the fuel from the fuel storage chamber through said heat exchange means, a dual stage direct expansion turbine, means for directing a portion of the fuel issuing from the heat exchange means into the first stage of the dual stage turbine, means directing the fuel exhausting from the first stage of the dual stage turbine into said heat exchange means, means directing a portion of the reheated fuel issuing from the heat exchange means into the second stage of the dual stage turbine, an air compressor between the ram air intake and the combustion chamber driven by said dual stage turbine, means directing fuel exhausting from the second stage of the dual stage turbine and at least a part of the other portion of the fuel by passing the dual stage turbine into the combustion chamber, and expanding the products of combustion issuing from the combustion chamber through the outlet nozzle.
Claim 9
Dependent Claim
211 words
A reaction propulsion system including means providing a combustion chamber having an impulse expansion outlet nozzle therefrom, means providing a ram air intake, means directing air from the ram air intake into the combustion chamber, a fuel storage chamber, heat exchange means in heat exchange contact with the air in the air directing means, means for directing a portion of the fuel from the fuel storage chamber through said heat exchange means, a dual stage direct expansion turbine, means for directing a portion of the fuel issuing from the heat exchange means into the first stage of the dual stage turbine, means directing the fuel exhausting from the first stage of the dual stage turbine into said heat exchange means, means directing a portion of the reheated fuel issuing from the heat exchange means into the second stage of the dual stage turbine, an air compressor between the ram air intake and the combustion chamber driven by said dual stage turbine, means directing fuel exhausting from the second stage of the dual stage turbine and at least a part of the other portion of the fuel by passing the dual stage turbine into the combustion chamber, and expanding the products of combustion issuing from the combustion chamber through the outlet nozzle.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |