How fast does a plane accelerate before take off?

If a reduced thrust takeoff is being made, the ground run may be slightly longer. An average commercial jet accelerates to between 120 and 140 knots prior to liftoff. To do this in 30 to 35 seconds requires a good sustained acceleration. This is something that pilots look for during a takeoff roll.



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A typical takeoff speed for a Boeing 747 is around 160 knots (184 mph), depending on the jet's wing flap configuration, the number of passengers aboard, and the weight of their luggage, fuel load, current weather conditions, and other factors. How Fast Do Airplanes Fly When Landing?

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Acceleration is the derivative of velocity, and the 2nd derivative of distance.

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In aviation, the rule of three or 3:1 rule of descent is a rule of thumb that 3 nautical miles (5.6 km) of travel should be allowed for every 1,000 feet (300 m) of descent. For example, a descent from flight level 350 would require approximately 35x3=105 nautical miles.

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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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This has been made possible through advancements in the durability and reliability of jet engines - allowing most aircraft to operate with only one engine for around three hours to get to the nearest airport.

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There is no single maximum wind limit as it depends on the direction of wind and phase of flight. A crosswind above about 40mph and tailwind above 10mph can start to cause problems and stop commercial jets taking off and landing. It can sometimes be too windy to take-off or land.

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Question: Right after takeoff, it often seems that the pilot slows down and the plane drops somewhat. Why is that? I have noticed that it is pretty consistent. Answer: The sensation of slowing down is really one of slowing the rate of acceleration; this is due to reducing the thrust after takeoff to the climb setting.

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Aeroplanes are made to run on the runway before take off, so that they acquire the necessary lift.

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Airplanes rely on a braking system to safely land on runways. At cruising altitude, most commercial airplanes fly at a speed of roughly 500 to 600 mph. When landing, however, they must reduce their speed.

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The bumps you experience during take off, landing and while clearing clouds is a caused by either of the two turbulence types. Add to that the speed of the airplane cutting through dense air at lower altitudes, and some bumps are expected as well as entirely normal.

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The main reason commercial airlines board passengers from the front to the back is to maintain balanced weight distribution. It ensures that neither the front nor the back of the airplane is bearing too much weight. Airplanes, of course, are typically heavier in the back.

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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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When the twin-engine aircraft is certified, part of its assessment is based on how long it can fly on a single-engine. To put it into actual time, a Boeing 787 Dreamliner is certified for ETOPS-330. This means that the plane can fly on routes that take it 330 minutes from the nearest suitable airport for landing.

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Smooth Wing Technology The use of composite materials in the wing structure allows the 787 wing to have a higher aspect ratio (the square of the wing span divided by the wing area) than previous aircraft.

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