At what speed does a boeing 747, or any plane alike, take-off at?
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snumfalzumpa
ANSWERS: 3
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Take off speeds vary by type of aircraft, weight of the plane, load, etc. A 747 usually takes off at a speed of 180 to 200 miles an hour.
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As the aircraft starts down the runway there are 3 calls the co-pilot (possibly the pilot calls out), the following are the V1, Rotate and V3 speeds. Depending on the weather, winds, temperature, weight of the aircarft and many more, these V1, Rotate and V3 speeds may vary. These are generic 747 speeds in ideal conditions. I don't have the weight numbers. --V1-- is 145-148 knots,167-170 mph V1 is the go or no-go decision speed --V2-- 155-160 Knots or 178-184 mph, this is the rotation speed or lift off speed --v3-- is 180 knots or 207 MPH, this is the safe climb out speed.
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"Standard" take off speeds, as mentioned above? No such thing. At every max weight on any aircraft for takeoff the numbers will be very close but not every take off will be one at max gross weight. While those figures may be a good ball park estimate for a 747 at a given weight, what is the actual speed range from operating empty weight to max takeoff weight? It varies by a lot more than 5 knots. BTW- "V2" is NOT the rotation speed of an aircraft! That would be "Vr" and the call out is "rotate". The definition of V2 is the minimum "take off safety speed" and is predicated on an engine inoperative during climb out. It is used immediately after takeoff, before accelerating to initial climb speed, for max climb performance. As far as "V3", I fly for an airline and it is not a standard call out. Only "80 knots" (transfer of control if need be from the captain to first officer), "V1, and "Rotate" are for our airline (other airliness may also call out V2). The cockpit take off videos at http://www.flightlevel350.com will illustrate that. Read more about "V speeds" Wikipedia- http://www.en.wikipedia.org/wiki/V2
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