At Edwards AFB, Calif., Grumman pilot Chuck Sewell makes the first flight of the X-29A forward-swept wing demonstrator. The X-29s, two of the most unusual aircraft ever built, are designed to prove the aerodynamic benefits of wings that appear to have been put on backwards.
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.