In the labs and wind tunnels of Cleveland's Glenn Research Center and three other NASA facilities, the prospect of commercial supersonic flight is quietly coming out of mothballs.
Glenn engineers and their counterparts at the Langley, Dryden and Ames research centers are at work devising greener, fuel-efficient and less-polluting supersonic engines.
Glenn engineers and their counterparts at the Langley, Dryden and Ames research centers are at work devising greener, fuel-efficient and less-polluting supersonic engines.
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