Why do planes go fast before takeoff?

In order for a plane to take off, it must be going fast enough for the wings to generate enough lift to overcome the force of weight. A Boeing 747 under standard conditions must be going 296kph (184 mph) to take off. Additionally, weather factors can affect the ground speed need for takeoff.



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Before takeoff, the engines, particularly piston engines, are routinely run up at high power to check for engine-related problems. The aircraft is permitted to accelerate to rotation speed (often referred to as Vr).

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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 range of 240–285 km/h (130–154 kn; 149–177 mph).

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As the plane descends into ground effect, it may actually accelerate if the engines are producing enough thrust, since in ground effect the plane requires much less power to keep flying. Power from the engines will translate into speed, if not height.

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Transferring too much weight onto the nosewheel causes a situation called wheelbarrowing, which can lead to a loss of directional control, prop strike, or nose gear collapse. On top of those problems, with little to no weight on your main landing gear, you have little braking action.

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Wake turbulence can cause a plane to vibrate The bigger the plane, the greater the wake. Like crosswinds, pockets of unstable air can force the pilot to react to keep the plane stable. These sudden movements cause the plane's wings to flex again, creating vibrations throughout the aircraft.

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Pilots have a unique viewpoint while flying private or commercial aircraft. They get an unobstructed view of stunning natural sights, such as pink lakes and rectangular-shaped icebergs. Some have reported seeing UFOs, while others have flown over swirling hurricanes.

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Planes have headlights so that pilots can see what is in front of them. Unfortunately, they are only effective during takeoffs and landings. Even with the slight illumination offered by the headlights, only darkness is visible when looking out the front window of a cockpit.

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According to FAR 91.117(a), unless otherwise authorized by the Administrator, no person may operate an aircraft below 10,000 feet MSL at an indicated airspeed of more than 250 knots (288 mph). If you're flying a piston aircraft, this might not mean a lot to you.

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Landing. While landing, speed is largely affected by the aircrafts current weight, commercial airplanes typically land between 130 and 160 mph (112 to 156 knots).

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The airplane accelerates to rotation speed, but it's still on the ground. Obviously, some airplanes will lift off more quickly than others. Generally speaking, though, the takeoff roll lasts about 15 seconds for single-engine general aviation airplanes.

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What do pilots say right before takeoff? These can vary, but in general, the announcements are relatively standard across different airlines. Most pilots will typically introduce themselves and the cabin crew; state the aircraft type, flight number, and route, and remind passengers of the airline's seatbelt policy.

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Why do planes turn left and right after takeoff? Aircraft usually turn after takeoff for several reasons, one is to follow a departure procedure, turning to avoid obstacles (buildings, mountains) or they can simply be turning in the direction of their destination.

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Pilots don't earn a flat annual salary like some professions. Instead, they're paid an hourly wage for each flight hour flown, along with per diem. Most airlines guarantee a minimum number of hours per month, so that pilots can count on at least a minimum amount of monthly income.

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Airline pilots take turns using the bathroom nearest the cockpit during a flight. There are no bathrooms installed in the cockpit. For airplanes with a single pilot, diapers, catheters, or collection devices are used if they are unable to land to use the airport bathroom.

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Though exceptions exist, pilots are usually free to decide who flies every flight. Some airports feature challenging approaches due to their proximity to rising terrain. These airports might require special training to fly to and are often captain-only flights.

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But extending the flaps also increases drag and slows the plane down, thereby reducing the control over the aircraft that you want. So to counteract that, pilots will throttle up to maintain speed and control.

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Often, the purpose of lift redistribution is to ensure that the wing tip is the last part of the wing surface to stall, for example when executing a roll or steep climb; it involves twisting the wingtip a small amount downwards in relation to the rest of the wing.

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When the airplane is taking off, the flaps help to produce more lift. Conversely, flaps allow for a steep but controllable angle during landing. During both, efficient use of flaps help to shorten the amount of runway length needed for takeoff and landing.

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