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2. Combustion tap-off cycle - Wikipedia

   en.wikipedia.org/wiki/Combustion_tap-off_cycle

   The cycle is comparable to a gas-generator cycle engine with turbines driven by main combustion chamber exhaust rather than a separate gas generator or preburner. [1] The J-2S rocket engine, a cancelled engine developed by NASA, used the combustion tap-off cycle and was first successfully tested in 1969. [2]

3. FTP-75 - Wikipedia

   en.wikipedia.org/wiki/FTP-75

   It is also known as FTP-72 or LA-4, and it is also used in Sweden as the A10 or CVS (Constant Volume Sampler) cycle and in Australia as the ADR 27 (Australian Design Rules) cycle. [4] The cycle simulates an urban route of 7.5 mi (12.07 km) with frequent stops. The maximum speed is 56.7 mph (91.2 km/h) and the average speed is 19.6 mph (31.5 km/h).

4. Two-stroke engine - Wikipedia

   en.wikipedia.org/wiki/Two-stroke_engine

   The fuel/air mixture strikes the cylinder head, then follows the curvature of the combustion chamber, and then is deflected downward. This not only prevents the fuel/air mixture from traveling directly out the exhaust port, but also creates a swirling turbulence which improves combustion efficiency, power, and economy. Usually, a piston ...

5. Two-stroke oil - Wikipedia

   en.wikipedia.org/wiki/Two-stroke_oil

   The oil is ultimately burned along with the fuel as a total-loss oiling system. That results in increased exhaust emissions , sometimes with excess smoke and/or a distinctive odor. The oil-base stock can be petroleum , castor oil , semi-synthetic or synthetic oil , and is mixed (or metered by injection) with petrol/gasoline at a volumetric fuel ...

6. Staged combustion - Wikipedia

   en.wikipedia.org/wiki/Staged_combustion

   One form of fuel staged combustion is the procedure known as burner out of service (BOOS). [4] The technique involves shutting off the fuel flow from one burner or more to create fuel-rich and fuel-lean zones, achieving some NO x emission control (10%). The technique is not widely used in pulverized coal-fired plants (2 units, 350 MW e).

7. Staged combustion cycle - Wikipedia

   en.wikipedia.org/wiki/Staged_combustion_cycle

   The main advantage is fuel efficiency due to all of the propellant flowing to the main combustion chamber, which also allows for higher thrust. The staged combustion cycle is sometimes referred to as closed cycle, as opposed to the gas generator, or open cycle where a portion of propellant never reaches the main combustion chamber. The ...

8. RL10 - Wikipedia

   en.wikipedia.org/wiki/RL10

   The RL10 is a liquid-fuel cryogenic rocket engine built in the United States by Aerojet Rocketdyne that burns cryogenic liquid hydrogen and liquid oxygen propellants. Modern versions produce up to 110 kN (24,729 lb f) of thrust per engine in vacuum.

9. RS-68 - Wikipedia

   en.wikipedia.org/wiki/RS-68

   The RS-68 (Rocket System-68) was a liquid-fuel rocket engine that used liquid hydrogen (LH 2) and liquid oxygen (LOX) as propellants in a gas-generator cycle. It was the largest hydrogen-fueled rocket engine ever flown. [3] Designed and manufactured in the United States by Rocketdyne (later Pratt & Whitney Rocketdyne and Aerojet Rocketdyne).