how fast does airplanes go on takeoff?

Answer 1

0 km/h is enough (Harrier).

Also see:
http://en.wikipedia.org/wiki/Takeoff
Typical take-off air speeds for jetliners are in the 130 to 155 knot range (150 to 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).

Answer 2

Some planes like a piper cub go about 55 knots and others like a Boeing 747 have a V1 of 158 knots which is the speed they will abort takeoff if a dire emergency occurs, 175 knots for Vr which is the rotation speed where they can start to "pull up" and 187 knots for V2 which is takeoff even if an engine goes out. So basically anything from 55 knots to 187 knots or more. As far as technicalities with headwinds...some planes may have ground speeds (appear to have) only of maybe 20 knots because of such strong winds blowing them back but giving enough airflow over the wings to lift off. I woundn't recommend flying in that but it is different to watch them go slow on windy days.

Answer 3

The take-off or "rotate" speed for airplanes differ depending on size, type, etc...

On average lets say most of your small single engine airplanes rotat at about 55 knots which equals about 60-65 mph. They then speed up during climb to about 80-90 knots (about 90-110mph). Cruise speed is anywhere from 100-140 knots (115-150 mph).

Now obviously as the airplane gets bigger it tends to get faster.

Your jet aircraft usually stay around the same speeds though. Rotate speed is about 130-150 knots (150-170 mph). They then cruise anywhere from 250-400 knots (290-460 mph). Such a big possibility for the speeds because it all depends on the airplane.

Answer 4

The takeoff speed will vary greatly by aircraft type, temperature, weight of the passengers, fuel and cargo, altitude and wind speed. Smaller single engine planes can take off at 40 to 60 knots and larger passenger jets like the 747 take off at around 170 knots.

Here is a link to some private jets with performance data: http://www.jets.com/private_jets.aspx

Answer 5

Depends on the plane. My cessna 172sp takes off at 55kts, about 63mph.
A 737 can definately take off and land slower than 150mph, because I have actually passed 737's and other jets while they were flying in the pattern, and my top speed is about 125kts (about 140mph).

Below 10,000ft, the speed limit is 250kts(288mph), so there is no way that any airliner would pass that on takeoff, especially since the class B airspace that surrounds most big airports has an even slower speed restriction of 200kts.

Answer 6

Depends upon the aircraft. Anything from about 40 MPH for an old Piper J3 Cub to over 200 MPH for some military hardware. Commercial airliners are typically somewhere between 140 MPH and 180 MPH.

Answer 7

Vr (rotation speed, or the speed the aircraft is traveling when it is lifted off the runway) varies, depending on what you're flying. For example, a small single engine aircraft may have a rotation speed of 50-70 knots. An MD80 has a rotation speed of 145 knots.

A knot, by the way, is appx 1.1 mph.

Answer 8

This really depends on the aircraft. Some ultralights lift off at about 30mph. Heavy jets lift off around 120mph (V1to V2). As I recall, my Cessna 150 wanted to fly at around 50mph. At that speed, I was too busy to stare into the indicator.

Answer 9

depends on da plane the SR-71 gos 320mph on takeoff

Answer 10

depends on the plane. ultralights take off 30mph, Cessna can take off at 47 mph, and bigger planes at a higher speed