for LOCAL WEATHER: SNOW DEPTH: LOCAL WEATHER RADAR: STATE WEATHER MAP: Essington, PA Essington, PA snow Essington, PA radar PA map-or--or--or- 19029 19029 snow 19029 radar -or--or- PA PA snow
It could reach a top speed of 4,520 miles per hour (7,274 km/h), or Mach 6.72. During the X-15 program, 13 flights by eight pilots met the Air Force spaceflight criterion by exceeding the altitude of 50 miles (80 km), thus qualifying these pilots as being astronauts.
The X-15 is powered by a rocket engine, however, so it is technically half-rocket, arguably eliminating it from being called the fastest airplane in the world. Falcon HTV-2. The U.S. Defense Advanced Research Projects Agency (DARPA) has tested an unmanned hypersonic glider that could be considered the fastest airplane in the world.