US too dependent on Russian rocket engines, experts tell lawmakers

July 17, 2014 4:33 PM

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US too dependent on Russian rocket engines, experts tell lawmakers

Should the Russian government yank its supply of rocket engines for United States launches, critical national-security satellite missions could be delayed up to four years, experts told a joint Senate hearing Wednesday.

United Launch Alliance's (ULA) Atlas 5 rocket is the workhorse of heavy satellite launches in the United States, but the booster requires a Russian RD-180 engine to get off the ground.

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