With the X-15 under its right wing, the Boeing NB-52A, 52-003, takes of from Edwards Air Force Base, 17 July 1962. The rocketplane's belly is covered with frost from the cryogenic propellants. (U.S. Air Force)
First flight of the Boeing B-52
Photo of B52H (AFR61013) ✈ FlightAware
SUPER POWERFUL us air force Boeing B-52 Bomber Aircraft
April 15, 1952: first flight of the YB-52, second prototype of the Boeing B-52 Stratofortress. The current variant of the venerable bomber, the B-52H, remains an integral part of the US Air Force fleet, and is expected to continue serving into the 2040s.