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In a vacuum motor, the partial vacuum is created by an external pump. These motors were commonly used to power railway turntables in the UK, using vacuum created by a steam locomotive's vacuum brake ejector. The operating principle is similar to a steam engine – in both cases power is extracted from a difference in pressure.
Starship is a two-stage super heavy-lift launch vehicle under development by SpaceX . Starship's primary objective is to lower launch costs significantly via economies of scale. This is achieved by reusing both rocket stages, increasing payload mass to orbit, increasing launch frequency, creating a mass-manufacturing pipeline, and adapting it ...
Manifold vacuum is an effect of a piston 's movement on the induction stroke and the choked flow through a throttle in the intake manifold of an engine. It is a measure of the amount of restriction of airflow through the engine, and hence of the unused power capacity in the engine. In some engines, the manifold vacuum is also used as an ...
Merlin 1 is a family of LOX / RP-1 rocket engines developed 2003–2012. Merlin 1A and Merlin 1B utilized an ablatively-cooled carbon-fiber composite nozzle. Merlin 1A produced 340 kilonewtons (76,000 lb f) of thrust and was used to power the first stage of the first two Falcon 1 flights in 2006 and 2007. Merlin 1B had a somewhat more powerful ...
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The engine is a full-flow staged combustion cycle (FFSC) engine powered by cryogenic liquid methane and liquid oxygen ("methalox"). SpaceX's Starship system uses Raptor engines in its super-heavy-lift Super Heavy booster and in the Starship spacecraft, which acts as the second stage when launched from Earth and as an independent craft in space.
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