The speed of sound is equal to 678 mph at temperature -48 degrees F and altitude 30000 feet . 1 mile per hour (mph) = 0.44704 meter per second (m/s) = 1.609344 kilometer per hour (kph) = 1.46666667 foot per second (fps, ft/s) = 0.868976242 knots (kn, kt or kts)....
The first human-made object to break the sound barrier was a rocket-powered plane called Bell X-1 piloted by Chuck Yeager in October 1947. He achieved a speed of about Mach 1.06 at an altitude of 13,000 meters. The first human to travel faster than sound was Soviet cosmonaut Yuri ...
The first human-made object to break the sound barrier was a rocket-powered plane called Bell X-1 piloted by Chuck Yeager in October 1947. He achieved a speed of about Mach 1.06 at an altitude of 13,000 meters. The first human to travel faster than sound was Soviet cosmonaut Yuri ...
An aircraft flies at speed 500 mph at an altitude of 35000 ft. The surrounding temperature is -60 oF.The speed of sound at this altitude and temperature can be calculatedc = [k R T]1/2 = [ 1.4 (1716 ft lb/slug oR) ((-60 oF) + (460 oR)) ]1/2 = 980 ft/s where k ...
For example, the standard atmosphere model lapses temperature to −56.5 °C (−69.7 °F) at 11,000 meters (36,089 ft) altitude, with a corresponding speed of sound (Mach 1) of 295.0 meters per second (967.8 ft/s; 659.9 mph; 1,062 km/h; 573.4 kn), 86.7% of the sea level ...
An investigation has been made in the Langley 300-MPH 7- by 10-foot tunnel to determine the aerodynamic characteristics of a related series of parawings in which wing sweep was the primary variable. The leading-edge sweep angles varied f... Rodger L. Naeseth,Thomas G. Gainer 被引量: 6...
level, it can get up to 921 mph or Mach 1.21. At higher altitudes, however, it exceeds Mach 2 or 1,534 mph. The Air Force manual for the F-22 says that the Raptor's top speed is Mach 2, but James E. "JB" Brown pushed it to Mach 2.1 once just to prove it was possible, ...
(typically <250mph), the density of the air remains constant. However, at higher speeds, some of the energy of the object goes into compressing the air and locally changing its density. This effectively changes the resultingaerodynamic forces, in particular for very high speeds, and can ...
Mach number is useful because the fluid behaves in a similar way at the same Mach number. So, an aircraft traveling at Mach 1 (340.3 m/s, 761.2 mph, 1,225 km/h) will experience shock waves in much the same manner as when it is traveling at Mach 1 at 11,000 m (36,000 ft), ...
XLR-99 burnout occurred 80.3 seconds after ignition. At this juncture, the X-15 was traveling at 3,590 mph; better than 5 times the speed of sound. Following rocket motor burnout, the aircraft slowed and began to lose altitude under the influence of weight and aerodynamic drag. ...