[특허]Mixed mode propulsion aerospace vehicles

Mixed mode propulsion aerospace vehicles 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B64G-001/20
출원번호	US-0451810 (1974-03-18)
발명자 / 주소	Salkeld Robert J. (Malibu CA 90017)
인용정보	피인용 횟수 : 28 인용 특허 : 0

초록 ▼

An aerospace vehicle incorporates within the same stage two different main propulsion systems that are operated in sequence. The first system involves the use of high density-impulse propellants, and the second system involves the use of lower density-impulse propellants to achieve higher final velocities than would otherwise be the case if the total available volume were used for either set of propellants separately. In one arrangement, one stage of a propulsion aerospace vehicle incorporates provisions for carrying and burning three different propellants, －two fuels and a common oxidizer or two oxidizers and a common fuel. Certain of the wing and/or body structures are designed to serve as tankage volume for low pressure storage of at least one of the propellants, which is one that does not require special pressurized tanks. The use of common oxidizer or fuel, and common wing/body/tankage structure, simplifies and lightens the vehicle, thus enhancing its ability to realize the benefits of what is referred to as the mixed-mode propulsion principle. When one of the fuels is utilized in airbreathing engines, additional flexibility is provided for vehicle operation in the atmosphere as well as in space.

대표청구항 ▼

In a vehicle system in which it is desired to propel a vehicle stage alOng a trajectory through space using chemical engine means exlusively with said chemical engine means obtaining energy for main propulsion of said vehicle stage from a chemical reaction of propellants in said chemical engine means, wherein the improvement comprises, the steps of using said chemical engine means exclusively to provide two modes of main propulsion of said vehicle stage with each of said modes using different liquid chemical propellant combinations each capable of translating the vehicle stage center of gravity along a trajectory through space for a sustained long time duration to effect said main propulsion of said vehicle stage for a substantially long distance; operating said chemical engine means in a first one of said modes of main propulsion in said vehicle stage to propel the vehicle stage by a first liquid chemical propellant combination; discontinuing operation of said one mode of main propulsion; then operating the other mode of main propulsion in said vehicle stage to propel the same by a second liquid chemical propellant combination, said first mode of main propulsion further including the step of using a first liquid chemical propellant combination in said engine means having a higher density and density-impulse, and a lower specific impulse, than the liquid chemical propellant combination being used in said engine means in said other mode of propulsion. In a vehicle system in which it is desired to propel a vehicle stage along a trajectory through space using chemical engine means exclusively with said chemical engine means obtaining all of the energy for main propulsion of said vehicle stage from a chemical reaction of propellants in said chemical engine means, wherein the improvement comprises, means including said chemical engine means in said vehicle for producing two different modes of propulsion with each of said modes using different liquid chemical propellant combinations capable of translating the vehicle stage center of gravity along a trajectory through space for a sustained time duration to effect propulsion of said vehicle stage for a substantially long distance; means for operating said chemical engine means in one of said modes of main propulsion by a first liquid chemical propellant combination; means for discontinuing operation of said one mode of main propulsion; said chemical engine means including means for operating in the other mode of main propulsion by a second liquid chemical propellant combination after discontinuance of operation of said one mode of main propulsion, the liquid chemical propellant combination used in said one mode of main propulsion having a higher density and density-impulse, and a lower specific impulse, than the second propellant combination.

이 특허를 인용한 특허 (28)

Jackson, L. Robert; Taylor, Allan H., Aerospace vehicle.
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Ford,Donald B., Asymmetrical low-profile bulkhead.
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George R. Schmidt, Atomic-based combined cycle propulsion system and method.
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Carpenter, Jon J.; Cronick, Jeffrey J.; Green, Jennifer L.; Lindley, Brian R.; Wechsler, James K., Autonomous orbit transfer vehicle.
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Don A. Hart ; David W. Geyer, Configurable space launch system.
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Carpenter, Jon J.; Cronick, Jeffrey J.; Green, Jennifer L.; Lindley, Brian R.; Wechsler, James K.; Smith, Thomas R., Crewed on-orbit, returnable, and reusable space vehicle.
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Carpenter, Jon J.; Cronick, Jeffrey J.; Green, Jennifer L.; Lindley, Brian R.; Wechsler, James K.; Smith, Thomas R., Crewed on-orbit, returnable, and reusable space vehicle.
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Beichel Rudi (Sacramento CA), Dual expander rocket engine.
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Martin James A. (Gloucester VA), Earth-to-orbit vehicle providing a reusable orbital stage.
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Wexler Mark Harry ; Buck Peter Andrew ; Iwanczyk Timothy D., Fuel tank for lifting body re-entry vehicle.
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Elizabeth P. Kirn ; Neil Anthony Graf ; Kevin Wilbur Ely, Halogenated composites for oxygen systems.
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McKinney,Bevin C.; Hudson,Gary C., Integrated abort rocket and orbital propulsion system.
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Morris, Dennis E.; Little, Alfred, Launch abort and orbital maneuver system.
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Beichel ; Rudi, Mixed mode rocket engine.
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Coffinberry George A. (West Chester OH), Multiple-propellant air vehicle and propulsion system.
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Coffinberry George A. (West Chester OH), Multiple-propellant air vehicle and propulsion system.
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Coffinberry George A. (West Chester OH), Multiple-propellant air vehicle and propulsion system.
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Lau Monica M. (Okeana OH) Coffinberry George A. (West Chester OH), Multiple-propellant air vehicle and propulsion system.
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Lau Monica M. (Okeana OH) Coffinberry George A. (West Chester OH), Multiple-propellant air vehicle and propulsion system.
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Frankie,Brian M.; Zubrin,Robert M.; Lowther,Scott E., Nitrous oxide based oxygen supply system.
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Jackson Liam R. (Newport News VA) Weidner John P. (Newport News VA) Small William J. (Seaford VA) Martin James A. (Gloucester VA), Orbiter/launch system.
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Bruce Alan Corcoran, Progressive 3-axis multi-variable propulsion vectoring aerial and spacecraft vehicle.
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Salkeld, Robert, Reusable global launcher.
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Clapp Mitchell B. ; Zubrin Robert M., Reusable rocket-propelled high altitude airplane and method and apparatus for mid-air oxidizer transfer to said airplane.
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Clapp Mitchell B. ; Zubrin Robert M. ; Raymer Daniel P., Reuseable rocket airplane.
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Straw, Anthony D., Space access system with reusable booster.
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Hall,Allison Earl, Space transportation system.
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Penn, Jay P., X33 aeroshell and bell nozzle rocket engine launch vehicle.
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