Eight separate recognized class records for speed over a closed course (1,000 and 2,000 kilometers) with payload in piston-engine aircraft are set by two different AAF crews flying Boeing B-29A Superfortresses at Dayton, Ohio.
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.