DARPA’s Falcon Hypersonic Technology Vehicle 2 (HTV-2) hit approximately Mach 20 — about 13,000 miles per hour or 3.6 miles per second. DARPA claimed the Falcon could fly from New York City to Los Angeles in under 12 minutes. Nobody has built anything faster than DARPA’s Falcon HTV-2. The Falcon HTV-2 was an unmanned launch vehicle. DARPA aimed to have the hypersonic craft travel anywhere around the globe in under an hour.
HTV-2 Was a Mach 20 Mi…