IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0200780
(2002-07-23)
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발명자
/ 주소 |
- Lawlor, Shawn P.
- Steele, Robert C.
- Kendrick, Donald
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출원인 / 주소 |
- Ramgen Power Systems, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
11 인용 특허 :
38 |
초록
▼
A rotary ramjet engine. A rotary ramjet engine is provided operating with a very low axial flow component. The engine has a closely housed rotor and shaft mounted for rotary motion with respect to an engine case. A plurality of ramjet combustors are provided at the periphery of the rotor, and a set
A rotary ramjet engine. A rotary ramjet engine is provided operating with a very low axial flow component. The engine has a closely housed rotor and shaft mounted for rotary motion with respect to an engine case. A plurality of ramjet combustors are provided at the periphery of the rotor, and a set of spaced apart helical strakes are provided extending outward from the surface portion of the rotor toward the interior wall of the engine case, less a running clearance therefrom. A centerbody is provided for each ramjet inlet. The centerbody is disposed along a helical axis parallel to the strakes, and includes a leading edge structure, opposing sidewalls, and a shaped cavity, and a rear end wall. Each set of strakes cooperate to define, rearward of the rear end wall of each inlet centerbody, a combustion chamber for mixing therewithin and inlet fluid and burning fuel therein to form hot combustion gases therefrom. A ramjet outlet nozzle structure, including a converging ramjet nozzle throat, and diverging ramjet nozzle are provided for receiving the hot combustion gases and discharging, at a preselected helical angle to the plane of rotation of the rotor, a jet of hot combustion exhaust gases. The hot combustion exhaust gases can be further utilized in an impulse turbine for extraction of kinetic energy, or in heat exchange equipment for recovery of thermal energy therefrom.
대표청구항
▼
A rotary ramjet engine. A rotary ramjet engine is provided operating with a very low axial flow component. The engine has a closely housed rotor and shaft mounted for rotary motion with respect to an engine case. A plurality of ramjet combustors are provided at the periphery of the rotor, and a set
A rotary ramjet engine. A rotary ramjet engine is provided operating with a very low axial flow component. The engine has a closely housed rotor and shaft mounted for rotary motion with respect to an engine case. A plurality of ramjet combustors are provided at the periphery of the rotor, and a set of spaced apart helical strakes are provided extending outward from the surface portion of the rotor toward the interior wall of the engine case, less a running clearance therefrom. A centerbody is provided for each ramjet inlet. The centerbody is disposed along a helical axis parallel to the strakes, and includes a leading edge structure, opposing sidewalls, and a shaped cavity, and a rear end wall. Each set of strakes cooperate to define, rearward of the rear end wall of each inlet centerbody, a combustion chamber for mixing therewithin and inlet fluid and burning fuel therein to form hot combustion gases therefrom. A ramjet outlet nozzle structure, including a converging ramjet nozzle throat, and diverging ramjet nozzle are provided for receiving the hot combustion gases and discharging, at a preselected helical angle to the plane of rotation of the rotor, a jet of hot combustion exhaust gases. The hot combustion exhaust gases can be further utilized in an impulse turbine for extraction of kinetic energy, or in heat exchange equipment for recovery of thermal energy therefrom. stream before the combining of the vapor stream with the first exhaust stream. 9. The process of claim 1, further comprising returning the liquid stream to the first working fluid. 10. The process of claim 1, wherein the transforming the first working fluid comprises: transferring heat to the first working fluid from a heat source; and expanding the first working fluid in a turbine, thereby producing the usable energy and the first exhaust stream. 11. The process of claim 10, wherein the heat source is selected from the group consisting of a fossil fuel, a renewable fuel, a nuclear fuel, geothermal energy, solar energy, and combinations thereof. 12. The process of claim 10, wherein the transferring heat to the first working fluid comprises transferring heat from a heat-providing thermodynamic cycle. 13. The process of claim 12, wherein the heat-providing thermodynamic cycle comprises: transforming a first heat-providing working fluid into usable energy and a first heat-providing exhaust stream; diverting at least a portion of the first heat-providing exhaust stream to form a diverted first heat-providing exhaust stream; and transferring heat from the diverted first heat-providing exhaust stream to the first working fluid. 14. The process of claim 13, wherein the first heat-providing working fluid comprises a mixture of water and steam. 15. The process of claim 13, wherein the transferring heat from the diverted first heat-providing exhaust stream to the first working fluid comprises evaporating at least a portion of the first working fluid. 16. The process of claim 13, wherein the transferring heat from the diverted first heat-providing exhaust stream to the first working fluid comprises superheating the first working fluid. 17. The process of claim 13, wherein the transferring heat from the diverted first exhaust stream to the first working fluid comprises at least partially vaporizing the first working fluid to form a vaporous first working fluid and wherein the transferring heat from a heat-providing thermodynamic cycle comprises superheating the vaporous first working fluid. 18. The process of claim 1, further comprising separating at least a portion of any moisture from the first exhaust stream before the diverting of at least a portion of the first exhaust stream. 19. The process of claim 1, wherein the at least a portion of the first exhaust stream comprises the entire first exhaust stream. 20. The process of claim 19, wherein the transforming of the vapor stream into usable energy comprises transforming the vapor stream into usable energy and a second exhaust stream; and further comprising: diverting at least a portion of the second exhaust stream to form a diverted second exhaust stream; and transferring heat from the diverted second exhaust stream and the liquid stream to the first working fluid. 21. The process of claim 20, wherein the transferring heat from the combined stream to the first working fluid comprises at least partially condensing the combined stream to form a partially condensed combined stream; separating the partially condensed combined stream into a second vapor stream and a second liquid stream; and transforming the second vapor stream into usable energy. 22. The process of claim 19, further comprising transferring heat from the diverted first exhaust stream to the vapor stream before the combining of the vapor stream with the first exhaust stream. 23. The process of claim 19, further comprising returning the liquid stream to the first working fluid. 24. The process of claim 19, wherein the transforming the first working fluid comprises: transferring heat to the first working fluid from a heat source; and expanding the first working fluid in a turbine, thereby producing the usable energy and the first exhaust stream. 25. The process of claim 24, wherein the heat source is selected from the group consisting a fossil fuel, a renewable fuel, a nuclear fuel, geothermal e nergy, solar energy, and combinations thereof. 26. The process of claim 24, wherein the transferring heat to the first working fluid comprises transferring heat from a heat-providing thermodynamic cycle. 27. The process of claim 26, wherein the heat-providing thermodynamic cycle comprises: transforming a first heat-providing working fluid into usable energy and a first heat-providing exhaust stream; diverting at least a portion of the first heat-providing exhaust stream to form a diverted first heat-providing exhaust stream; and transferring heat from the diverted first heat-providing exhaust stream to the first working fluid. 28. The process of claim 27, wherein the first heat-providing working fluid comprises a mixture of water and steam. 29. The process of claim 27, wherein the transferring heat from the diverted first heat-providing exhaust stream to the first working fluid comprises evaporating at least a portion of the first working fluid. 30. The process of claim 27, wherein the transferring heat from the diverted first heat-providing exhaust stream to the first working fluid comprises superheating the first working fluid. 31. The process of claim 27, wherein the transferring heat from the diverted first exhaust stream to the first working fluid comprises at least partially vaporizing the first working fluid to form a vaporous first working fluid and wherein the transferring heat from a heat-providing thermodynamic cycle comprises superheating the vaporous first working fluid. 32. The process of claim 19, further comprising separating at least a portion of any moisture from the first exhaust stream before the diverting of at least a portion of the first exhaust stream. ently, the critical stress can be estimated in real time according to a stress model prediction based on the difference between the critical temperatures, and possibly the rotational speed of the turbine, and some parameter, such as air pressure, that is indicative of air flow around the turbine component. Operation of the gas turbine can thus be controlled using the estimated critical temperatures.
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