A Colorado startup working to build the first supersonic passenger airliner for business travelers is showing off a test plane that’s meant to fly next year.

Boom Technology Inc., based at Centennial Airport in Arapahoe County, is building its XB-1 test plane to demonstrate its technology and designs for a larger 45-passenger jet capable of flying 1,450 mph -- 2.2 times the speed of sound.

The test plane is being publicly unveiled Tuesday. It's smaller than the planned full-sized passenger jet.

Boom, a 12-employee company, says the passenger jet it's designing will be capable of flying from London from New York City in three hours and 11 minutes, or Denver to Tokyo in just under seven hours.

Read more at the Denver Business Journal: http://bit.ly/2fuhm7E