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...ULA is developing a new rocket system called Vulcan to replace the Atlas V and Delta rockets and end the company’s reliance for Atlas engines on the RD-180 , built in Russia....
...The engines — powered by methane, a new propellant for US-built engines — will initially power a similar rocket to the Atlas V that ULA powers with Russian-built RD180 engines....
...The hearing had debated the timetable for developing a new, US-built alternative to the Russian RD180 rocket engine, which powers the Atlas V rocket that handles many launches of US spy and other military...
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