Boeing’s Phantom Eye liquid-hydrogen-powered remotely piloted aircraft completes its first autonomous flight, reaching an altitude of more than 4,000 feet and a cruising speed of 62 knots during its 28-minute flight at Edwards Air Force Base, Calif.
The KC-Z4, a blended wing body tanker concept being developed by startup JetZero, could fuel larger groups of aircraft at longer range to hold more targets at risk, company officials say.