at what speed, does a plane take off?

Answer 1

it depends on the weight and type of plane we're talking about

Boeing 737
weight:100,000 lb ,45,360 kg
speed:150 mph ,250 km/h ,130 kts

Boeing 757
weight:240,000 lb ,108,860 kg
speed:160 mph ,260 km/h ,140 kts

Airbus A320
weight:155,000 lb ,70,305 kg
speed:170 mph ,275 km/h ,150 kts

Airbus A340
weight:571,000 lb ,259,000 kg
speed:180 mph ,290 km/h ,155 kts

Boeing 747
weight:800,000 lb ,362,870 kg
speed:180 mph ,290 km/h ,155 kts

Concorde
weight:400,000 lb ,181,435 kg
speed:225 mph ,360 km/h ,195 kts

etc.etc.....

Answer 2

The speeds needed for takeoff are relative to the motion of the air (indicated airspeed). A headwind will reduce the ground speed needed for takeoff, as there is a greater flow of air over the wings. Typical takeoff air speeds for jetliners are in the 130–155 knot range (150–180 miles/hour, 250–290 km/hour). Light aircraft, such as a Cessna 150, take off at around 55 knots (63 miles/hour, 100 km/hour). Ultralights have even lower takeoff speeds. The take off speed is directly proportional to the aircraft weight; the heavier the weight, the greater the speed needed. Some aircraft specifically designed for short takeoff and landing can take off at speeds below 40 knots (74 km/h), and can even become airborne from a standing start when pointed into a sufficiently strong wind.

Answer 3

The plane begins to climbs at a speed which is sufficent enough to produce a lift on the airfoil of its wings. The density and direction and velocity of the wind is also a determining factor of how fast the plane would take off.
A small single engine plane to take off would require at least 60 miles an hour traveling on the run way,where a jet may require over 200miles an hour to take off..

Answer 4

The bigger the plane the faster it has to go to take off. Some can take off at only 10 or 20mph but they are special planes. Here is a list of commercial airliner speeds.

Answer 5

It depends on your type of airplane, air density, whether there's a head-wind, and several other factors.

Here are some examples.

Jet liners need to get to at least 150mph to take off,

Small planes like Cessnas about 60mph,

Ultra-lights, maybe 20mph, if even that much.

Hope this helps.

Answer 6

Depends on the aircraft and your settings. General aviation aircraft can takeoff at 50kts while airliners require more than 100kts.
Also,it depends on whether you're using clean or dirty(flaps down) configuration.

Answer 7

you cant really answer that...it depends on the weight of the plane mostly and the weather conditions.