(top speed)
2006-11-14 15:34:04 · 8 answers · asked by 2 Minutes ago 1 in Cars & Transportation ➔ Aircraft
.................. IT IS CALLED Mach No. ......... relative speed of sound at that level ................ for 747............. its .86 Mach max [ 86 % of speed of sound } they cruise at .82 Mach .............. speed of sound is highest at sea level ....................
2006-11-15 02:35:04 · answer #1 · answered by spaceman 5 · 0⤊ 0⤋
Max speed in a 747 is about 500 knots. That is in calm wind conditions which never happen. Winds aloft change the max speed quite a bit.
2006-11-14 23:46:25 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Max. Speed: 640 mph
2006-11-14 23:38:07 · answer #3 · answered by bobbie v 5 · 0⤊ 0⤋
It is actually Mach 85 at 567 mph according to the Boeing website
2006-11-15 15:42:06 · answer #4 · answered by CXfan 4 · 0⤊ 1⤋
Mach .87 is the max for the 400 series. at 37,000 that is equal to approx. 485 knots true airspeed.
2006-11-15 22:08:04 · answer #5 · answered by Avi8ing 2 · 0⤊ 0⤋
635 mph
2006-11-15 01:11:27 · answer #6 · answered by mark 1 · 0⤊ 0⤋
a little over 600 mph
also depends on the jet stream, so give or take
2006-11-14 23:42:02 · answer #7 · answered by B pyro 3 · 1⤊ 0⤋
too fast
2006-11-15 00:49:28 · answer #8 · answered by Al3x_Dogg 2 · 0⤊ 3⤋