passenger travel on supersonic planes

Lockheed Martin will first have to show it is possible to fly a quiet supersonic aircraft before federal rules can be changed to allow passenger travel and civil supersonic flights over land.(Reuters File Photo)

NASA hires Lockheed Martin to build quiet, supersonic ‘X-plane’

By HT Correspondent | Agence France-Presse, Washington
UPDATED ON APR 04, 2018 10:20 AM IST
As early as mid-2022, NASA plans to fly the X-plane over certain, yet-to-be-determined US cities to collect data and gather community responses.
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