2007-01-25 23:20:25 · 10 answers · asked by pilchards02 1 in Travel ➔ Air Travel
I varies with altitude and temperature. At sea level it is 761.6 mph, (1229 km/h). This reduces to 660.3 mph (1062 km/h) at 39090 feet, (11000 m), where the temperature is -54.46* C.
It also travels faster in water and through solids.
2007-01-26 01:43:57 · answer #1 · answered by funnelweb 5 · 0⤊ 0⤋
The speed of sound in the atmosphere is a constant that depends on the altitude, but an aircraft can move through the air at any desired speed. The ratio of the aircraft's speed to the speed of sound affects the forces on the aircraft. Aeronautical engineers call the ratio of the aircraft's speed to the speed of sound the Mach number, M. If the aircraft moves much slower than the speed of sound, conditions are said to be subsonic, 0 < M << 1, and compressibility effects are small and can be neglected. If the aircraft moves near the speed of sound, conditions are said to be transonic, M ~ 1, and compressibility effects like flow choking become very important. For aircraft speeds greater than the speed of sound, conditions are said to be supersonic, 1 < M < 3, and compressibility effects are important. Depending on the specific shape and speed of the aircraft, shock waves may be produced in the supersonic flow of a gas. Your aircraft was flying at M ~ 1 just under the speed of sound
2007-01-26 07:46:43 · answer #2 · answered by Anonymous · 1⤊ 0⤋
At ground level the speed of sound is around 770mph and the speed of sound increases with altitude because of the drop in temperature - the pressure has v.little effect.
2007-01-26 07:28:54 · answer #3 · answered by mark 7 · 0⤊ 0⤋
speed of sound 740mph
2007-01-26 10:13:26 · answer #4 · answered by debbydave 2 · 0⤊ 0⤋
the speed of sound is 340mps...- meters per second. concord was the only commercial plane that could break the sound barrier.
2007-01-26 07:28:10 · answer #5 · answered by dmit_3228 2 · 0⤊ 0⤋
Think speed of sound is about 760 mph. BOOM !!
2007-01-26 07:28:13 · answer #6 · answered by Anonymous · 0⤊ 0⤋
dont forget, airspeed and groundspeed are different, because the air is less dense at 38,000ft that's why it's measured in mach instead of knotts at that height
2007-01-26 07:29:56 · answer #7 · answered by chrisbowe82 4 · 2⤊ 1⤋
760 mph, give or take.
2007-01-26 07:39:48 · answer #8 · answered by wunceinawhile 6 · 0⤊ 0⤋
wow, thats fast! are you sure it wasn't km/h?
2007-01-26 07:29:37 · answer #9 · answered by becbark 2 · 0⤊ 0⤋
580mph
2007-01-26 07:25:09 · answer #10 · answered by Robert P 6 · 0⤊ 2⤋