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'By far the greatest danger of Artificial Intelligence is that people conclude too early that they understand it'

 

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Spacex will make Methane rocket for Mars

RATE THIS! +7
Posted in Science on 23rd Nov, 2012 06:04 PM by AlexMuller

SpaceX intends to build a methane/liquid oxygen (Lox) engine, said founder Elon Musk, in a shift away from the highly refined kerosene rocket propellant (RP-1) that has powered the company’s previous engines.

 

Speaking at the Royal Aeronautical Society in London, SpaceX chief executive and lead rocket engineer Musk said Lox and methane would be SpaceX’s propellants of choice on a mission to Mars, which has long been his stated goal.

 

SpaceX’s initial work will be to build a Lox/methane rocket for a future upper stage, codenamed Raptor. The design of this engine would be a departure from the “open cycle” gas generator system that the current Merlin 1 engine series uses. Instead, the new rocket engine would use a much more efficient “staged combustion” cycle that many Russian rocket engines use.

 

Musk says that methane fuel has performance, cost and storage advantages over alternatives and could even be extracted from the Martian atmosphere for use in landing and ascent stages.

 

“The energy cost of methane is the lowest and it has a slight Isp (specific impulse) advantage over kerosene,” said Musk, adding that “it does not have the pain-in-the-ass factor that hydrogen has”. Hydrogen, another commonly used fuel, has storage and handling difficulties and the problem of hydrogen embrittlement.



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