S. Korea’s Homegrown KF-21 Fighter Achieves Supersonic Speeds

SEOUL, Jan. 17 (Korea Bizwire) — A homegrown KF-21 fighter prototype achieved supersonic speeds in a test flight Tuesday, South Korea’s state arms procurement agency said, in a key milestone for the high-profile warplane development project. The first KF-21 prototype reached the speed of Mach 1, or 1,224 kilometers per hour, at an altitude of [...]