Rockets

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the nasa sr 71a successfully completed its first cold flow flight as part of the nasarocketdynelockheed martin linear aerospike sr 71 experiment lasre at nasa's dryden flight research center, edwards, california on march 4, 1998during a cold flow flight, gaseous helium and liquid nitrogen are cycled through the linear aerospike engine to check the engine's plumbing system for leaks and to check the engine operating characterisitics cold flow tests must be accomplished successfully before firing the rocket engine experiment in flightthe sr 71 took off at 1016 am pst the aircraft flew for one hour and fifty seven minutes, reaching a maximum speed of mach 158 before landing at edwards at 1213 pm pst"i think all in all we had a good mission today," dryden lasre project manager dave lux saidflight crew member bob meyer agreed, saying the crew "thought it was a really good flight" dryden research pilot ed schneider piloted the sr 71 during the missionlockheed martin lasre project manager carl meade added, "we are extremely pleased with today's results this will help pave the way for the first in flight engine data collection flight of the lasre"

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