Henry A.H. Boot and John T. Randall, working at the University of Birmingham, England, create the first practical magnetron. The magnetron, a resonant-cavity microwave generator, is vital in the development of airborne radar.
B-21 Raider First Flight Now Postponed to 2023
May 20, 2022
The Air Force says the B-21 Raider won't make its first flight until 2023; about a six-month delay from the last official estimates. No reason was given for the delay. While other programs have recently chalked up schedule slips to supply chain and labor shortages, the Air Force has said…