NASA hires Lockheed Martin to build quiet, supersonic plane

NASA has inked a deal with Lockheed Martin to develop a supersonic "X-plane" that could break the sound barrier without a sonic boom, officials said yesterday. The $247.5 million contract allows for the design, building and testing of a plane that would make its first test flight in 2021, NASA said.

The experimental plane "will cruise at 16,764 meters at a speed of about 1,513 kph and create a sound about as loud as a car door closing, 75 Perceived Level decibel (PLdB), instead of a sonic boom," the US space agency said.

As early as mid-2022, NASA plans to fly the X-plane over certain, as yet to be determined, US cities to collect data and gather community responses. The goal is to enable quieter supersonic flight and create "new commercial cargo and passenger markets in faster-than-sound air travel," NASA said.

Last month, US President Donald Trump signed a federal budget that fully funds the project, saying the new aircraft "would open a new market for US companies to build faster commercial airliners."

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