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When a plane is taking off it should go at a speed at 160 knots before reaching into the air..
This depends on the type of aeroplane. In the case of a VTOL jet the speed is actually zero.
Depends on the type, size of the plane. Takeoff speed for most small, single-engine aircraft is approximately 80mph, but this can be adjusted by the pilot for short takeoffs, wind conditions, etc.
Airplane wings are designed to be most efficient when at high altitudes, traveling fast, while providing as little drag as possible. Unfortunately this design inst the best for takeoff and landing. Flaps are used to change the shape of the wing to accommodate takeoff and landing requirements. Most planes have flaps on the front of the wings (leading edge flaps) and at the back of the wings. During takeoff flaps increase lift so a plane can take off with limited runway length and lower speeds. As the plane gains speed the flaps are retracted. On approach and landing you want to fly as slow as possible so the flaps are deployed in increments till landing speed is achieved. Landing slower means less runway needed to stop.
Flaps and slatsSlats and flaps
There are auto landing systems where the plane can get to the ground following a laser flight plath - Taking off is much simpler of the two as a plane whose airframe is set to take off needs just the speed, direct and it will climb when the yoke is pulled back
It's not that there is a speed limit, but you can't go to the end of the runway. For most passenger airliners, takeoff speed is about 135 to 155 knots. It's just a matter of how long it takes the plane to accelerate to that speed.
The proper landing speed of a huge aircraft is between 250 to 300 kmph. A good landing speed is 280kmph. Over speed in the landing then you may not be able to stop the plane in time.
800mph
Weirdly, yes it is. When it gets to 190 and the plane is at 200, a Bugatti Veyron can accelerate past the speed of the plane.
The Vr (rotation for takeoff) speed of a Cessna 172 is around 55 kts. The final approach speed is around 60 kts. When landing pilots strive to stall the airplane at the same time that the wheels touch the ground this happens at around 50 kts.
Takeoff speeds of commercial passenger jets can vary greatly depending on aircraft design, weight, flap setting, runway condition, etc. However, most commercial jets take off somewhere between 130 kts (B737)and 155 kts (B747). The Concord had a takeoff speed of 195 kts.