Opinions expressed by Entrepreneur contributors are their own. Amazon Fire Phone, Google Glass, New Coke and Nintendo’s Virtual Boy: What do all these products have in common? They didn’t sell.

Regent Craft received U.S. Coast Guard approval to test its Viceroy seaglider prototype. The 12-passenger seaglider is designed for 180-mile flights at 180 mph, combining aircraft speed with boat ...

Vertical Aerospace completed the first phase of crewed testing for its VX4 eVTOL aircraft, involving tethered hover flights and various simulated failure scenarios. The VX4 prototype demonstrated a 20 ...

Vertical’s most advanced full-scale prototype is key step towards certification of aircraft. 60% of this prototype’s technology is from Vertical’s strategic aerospace partners GKN Aerospace, Hanwha, ...

Vertical Aerospace has moved a step closer to the resumption of flight testing, relocating its latest VX4 prototype to its test facility at Cotswold airport in Kemble. Flight testing of the electric ...