not main engines but "Like the planned Ares-V, DIRECT proposes to use the low-cost Pratt & Whitney, Rocketdyne RS-68 engine borrowed from the US Air Force's Delta-IV program" but would use them as they are now not upgraded to 106% as need for ares.
also it is very hard if not impossible to shut down a solid fuel booster once it has started its burn. by the way i am a SF writer by trade not a Rocket scientist.
WTF? How soes any of this relate to socialism? Really NASA and the Private comanies it hires are making a good deal of progress. Try reading this online paper to keep up spacedaily@spacedaily.com.
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am i only one by the way who thinks we should build both ?
not main engines but "Like the planned Ares-V, DIRECT proposes
to use the low-cost Pratt & Whitney,
Rocketdyne RS-68 engine borrowed from the
US Air Force's Delta-IV program" but would use them as they are now not upgraded to 106% as need for ares.
also it is very hard if not impossible to shut down a solid fuel booster once it has started its burn. by the way i am a SF writer by trade not a Rocket scientist.
WTF? How soes any of this relate to socialism? Really NASA and the Private comanies it hires are making a good deal of progress. Try reading this online paper to keep up spacedaily@spacedaily.com.