Pulsed piston-compressor jet engine
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0375381
(1995-01-17)
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발명자
/ 주소 |
- Clark Barre A. M. (P.O. Box 5008 Mammoth Lakes CA 93546)
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인용정보 |
피인용 횟수 :
6 인용 특허 :
0 |
초록
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An air-breathing pulsed jet engine for aircraft propulsion which employs a piston compressor rather than much more expensive axial or centrifugal compressors and turbines employed by conventional turbojet engines. The engine is similar to the common two-cycle gasoline engine, except its cylinder hea
An air-breathing pulsed jet engine for aircraft propulsion which employs a piston compressor rather than much more expensive axial or centrifugal compressors and turbines employed by conventional turbojet engines. The engine is similar to the common two-cycle gasoline engine, except its cylinder head comprises a jet nozzle with an internal pressure-activated nozzle-blocking valve. A spring keeps this valve closed during the engine\s compression stroke when the piston, connected to a crankshaft and flywheels by a connecting rod, is forced by the moment-of-inertia of the flywheels toward the cylinder head. When ignition and combustion of the compressed air and fuel occurs slightly before the piston reaches the top of its stroke, the much greater pressures within the engine\s combustion chamber force the valve to pivot open. This allows a jet of combustion gases to be released through the jet nozzle into the atmosphere. The reactive forces of the gas jet work against the piston to produce linear thrust (due to the moment-of-inertia of the flywheels) and to store up energy in the flywheels to motivate the piston through the next compression stroke. The jet pulse continues until the pressure inside the combustion chamber drops to a predetermined level, when the spring is able to close the valve. Since the pressure inside the combustion chamber of a gasoline engine are on the order of those inside many rocket motors, the thrusts imparted to the engine during each jet pulse is substantial.
대표청구항
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A pulsed piston-compressor jet engine comprised a. an engine cylinder having two ends [and attached at one of said two ends to a cylinder head], b. a piston fitted inside said cylinder in a manner allowing said piston to reciprocate [towards and away from said cylinder head]between said two ends, c.
A pulsed piston-compressor jet engine comprised a. an engine cylinder having two ends [and attached at one of said two ends to a cylinder head], b. a piston fitted inside said cylinder in a manner allowing said piston to reciprocate [towards and away from said cylinder head]between said two ends, c. said cylinder [head]including a jet nozzle operatively coupled thereto, said jet nozzle having an inner surface and including a nozzle outlet opening [directly]into the atmosphere, said cylinder [head]also including a pressure-actuated nozzle valve having an opened position and a closed position, and which, when in said closed position, closes said jet nozzle between said piston and said nozzle outlet in a substantially sealing manner for a compression of a supply of air, d. a combustion chamber including a space between said piston and said nozzle valve\s closed position, e. said pressure-actuated nozzle valve having a valve face defining [one]a surface of said nozzle valve, said valve face comprising part of said inner surface of said jet nozzle when said nozzle valve is in said opened position, leaving said jet nozzle [substantially unobstructed]without a substantially detrimental obstruction, a portion of said valve face facing part of said combustion chamber and at least partially blocking [in part]said jet nozzle when said nozzle valve is in said closed position, said nozzle valve having a closing means providing closing forces to move said nozzle valve to said closed position whenever pressures from a combustion within said combustion chamber drop below a [predetermined value]certain amount, [said closing means also holding said nozzle valve in said closed position with a holding force adequate to keep said nozzle valve in said closed position during said compression of said supply of air,]said combustion in said combustion chamber generating pressures against said portion of said valve face facing part of said combustion chamber to produce opening forces on said nozzle valve, [said opening forces overcoming said holding force and said closing forces, allowing]causing said nozzle valve to retract to said opened position, whereby a gas jet is released substantially unhindered through said jet nozzle into the atmosphere due to a direct action of said combustion on said nozzle valve, f. means to provide said supply of air into said combustion chamber, g. means to provide a supply of fuel into said combustion chamber, h. means to move said piston toward said [cylinder head]jet nozzle, causing said compression of said supply of air within said combustion chamber when said nozzle valve is closed, i. means to cause ignition of said supply of air and said supply of fuel within said combustion chamber after said compression of said supply of air, said ignition means causing said combustion which, in turn, causes said nozzle valve to open and said piston to move away from said [cylinder head]jet nozzle, and j. [means to keep said nozzle valve closed during operation of engine when desired, and k.]means to impart reactive force of said gas jet to said pulsed piston-compressor jet engine, whereby a useful thrust is obtained.
이 특허를 인용한 특허 (6)
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Sirohi, Jayant; Lauder, Timothy Fred; Alber, Mark R.; Bazzani, Daniel, Electric powered rotary-wing aircraft.
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Denne, William Anthony, Pulse jet engines.
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Worrell, Kenneth Erwin, Rotary piston engine.
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Ouellette, Richard P.; Kutzmann, Aaron J., Vertical takeoff and landing aircraft.
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Ouellette, Richard P.; Kutzmann, Aaron J., Vertical takeoff and landing aircraft.
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Ouellette, Richard P.; Kutzmann, Aaron J., Vertical takeoff and landing aircraft.
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