초록 ▼

A simple propulsion engine utilizing unheated atmospheric air as the propellant, and driven by a single cycle (unicycle) engine with internal combustion cylinder and free piston is disclosed. A plain piston is slidably displaceable in an elongated cylinder containing cylinder heads on opposite ends.

A simple propulsion engine utilizing unheated atmospheric air as the propellant, and driven by a single cycle (unicycle) engine with internal combustion cylinder and free piston is disclosed. A plain piston is slidably displaceable in an elongated cylinder containing cylinder heads on opposite ends. The piston receives a combustive impulse at each end of its stroke. The cylinder also has exhaust/inlet ports and propulsive nozzles at each end with relevant valves and actuators to effect the requisite timing of the combustion, air induction, and propulsion functions. During the piston's traverse of the elongated cylinder's midsection, air is induced into the expanding volume of the moving piston/cylinder chamber while air is compressed and expelled through the nozzle of the decreasing volume chamber, producing usable thrust. The large amounts of atmospheric air induced provides inherent internal cooling and exhaust scavenging of the propulsion engine. The preferred embodiment combines a free piston with an annularly arranged thrust piston to divide a dual-diameter cylinder into two combustion chambers and two thrust chambers. Scavenge feeder lines connected the thrust chambers to the combustion chambers via check valves provide exhaust scavenging, additional thrust output through exhaust nozzles, and feeding of fresh air into the combustion chambers. Also, pressure-actuated fuel injectors utilize pressure changes in respective combustion chambers to inject fuel at the appropriate time. The fuel injector includes an intensifier piston and pintle to raise the fuel pressure.

대표청구항 ▼

1. An intermittent pulse atmospheric propulsion engine, comprising:a thrust cylinder; a pair of combustion cylinders each having a cylinder head; said combustion cylinders coaxially disposed within said thrust cylinder and connected thereto via flange members; a combined piston assembly including a

1. An intermittent pulse atmospheric propulsion engine, comprising:a thrust cylinder; a pair of combustion cylinders each having a cylinder head; said combustion cylinders coaxially disposed within said thrust cylinder and connected thereto via flange members; a combined piston assembly including a combustion piston and a thrust piston annularly connected to said combustion piston, said combined piston slidably disposed within said combustion cylinder and said thrust cylinder; said combustion piston, said combustion cylinders and said cylinder heads forming a first and a second combustion chamber; said thrust piston, said thrust cylinder, and said flange members forming a first thrust chamber and a second thrust chamber; a first and a second exhaust port respectively formed in said first and second combustion chambers; first and second exhaust nozzles; first and second exhaust ducts respectively interconnecting said first and second exhaust ports with said first and second exhaust nozzles; a first scavenge feeder line having a first scavenge check valve therein and interconnecting said second thrust chamber with said first combustion chamber; a second scavenge feeder line having a second scavenge check valve therein and interconnecting said first thrust chamber with said second combustion chamber; first and second intake valves connected to said first and second thrust chambers; first and second thrust nozzles for exhausting air inside said first and second thrust chambers to an atmosphere outside said thrust cylinder to generate atmospheric propulsion; and first and second thrust check valves respectively interconnecting said first and second thrust nozzles with said first and second thrust chambers.