2006-11-12 04:14:17 · 5 answers · asked by billy999 1 in Cars & Transportation ➔ Aircraft
800,000 lb
362,870 kg TAKEOFF WEIGHT
180 mph
290 km/h
155 kts TAKEOFF SPEEDS
2006-11-12 04:19:14 · answer #1 · answered by Silverstang 7 · 0⤊ 0⤋
Takeoff speeds are always quoted as KIAS (Knots indicated air speed) so that takes care of altitude, temperature, pressure, wind speed and direction.
For a 747-400 Boeing says Vr = 175 KIAS, V2 = 187 KIAS. So you rotate at 175KIAS and your safe climb speed is 187KIAS.
2006-11-12 12:43:37 · answer #2 · answered by Chris H 6 · 1⤊ 0⤋
There are many published figures you can find on the Internet. However, they do not factor in variables such a wind speed and direction and ambient temperature. The altitude of the runway is also a factor to consider. If you are taking off at sea level, you will have a slower take off speed (rotation) than if you were at the airport in Denver, Colorado which is at a high altitude.
2006-11-12 12:25:05 · answer #3 · answered by brucenjacobs 4 · 0⤊ 1⤋
umm iot depends on what kind of sevn 747 it is because there are bout seven different types
2006-11-13 11:23:32 · answer #4 · answered by soccerknocker199 4 · 0⤊ 0⤋
200 mph...170kts...
2006-11-12 12:45:14 · answer #5 · answered by bb 3 · 0⤊ 1⤋