The F-22 and F-15 can travel at speeds up to and beyond Mach 2.25 and the F-35 can hit speeds of Mach 1.6, yet the first supersonic fighter aircraft emerged as far back as the 1950s with the North ...
Hypersonic developer Hermeus has begun testing a proprietary pre-cooler technology that will allow a standard Pratt & Whitney F100 jet engine to operate at higher speeds and with greater efficiency.