Antares-Cygnus ORB-2 ISS launch


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Problem is there are only two launch providers now that Antares is grounded. SpaceX and ULA. ULA being so expensive that only the US Gov't can afford them.

Like Doc said it's PR. ULA is going to hold this up and say, "Look, we are providing services for a private company now, not just Uncle Sam". We offer "competitive" pricing in the industry.

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There is also legislation moving through Congress, should be in the $1.1T authorization coming up for a vote this week, that will ban RD-180 for USAF/NRO launches after ~2018. Could be they'll have extras and will sell cutrate to dispose of them.

ULA and Blue Origin are working on an Atlas V replacement using BO's BE-4 methane engine on S1 and a smaller hydrolox BE-3U On S2.

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BE-3 (non-U) is a reusable for the lower stage of a suborbital system and has hundreds of test fires for over 10,000 seconds under its belt. About 110,000 lbf of sea level thrust. BE-3U is just an expendable and vacuum optimized version.

BE-4 is a methane reusable booster engine of 555,000 lbf of thrust, and is also a candidate for the DARPA XS-1 reusable booster program. We don't know for certain if it's been on the test stand, Blue Origin is a very secretive outfit, but it started development in 2011 so it's likely. BE-3 was a surprise in 2013.

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