How does a 747 slow down on landing?

Usually a large aircraft like the Boeing 747 will use two things to slow down. It not only uses the wheels, which have brakes, but it also has reverse thrusters. The reverse thrusters are essentially the force from the engines directed backwards (thus the reverse part).



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Although it varies due to multiple factors, a typical landing speed for a Boeing 747 is around 150 kias, while a typical landing speed for a much smaller and lighter Cessna 172 would be 60 to 70 kias with flaps at 30 percent, according to the pilot operating handbook.

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What speed does a Boeing 747 land at? A 747 'Jumbo Jet' would typically land at a speed of about 145kts-150kts (166mph-172mph), depending on the landing flap setting selected.

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The airplanes appear to fly slower because we perceive angular velocity when we look at them or for that matter from them. Because they fly quite high you observe them from quite a distance. Further there are no other stationary objects close by with whom you could compare their speed.

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In addition to reversers and wheel brakes, ground spoilers are deployed to 'dump lift', and effectively secure the aircraft on the runway. Whilst it's not required to use reverse thrust in some circumstances, most large passenger aircraft will deploy it on landing.

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No, no pilot would want to shut off engines before landing unless it was an emergency landing. Its possible the engines went to flight-idle which may be very quiet to somebody listening in the cabin. How do you think the aircraft got to the gate after landing if the engines were off?

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If the plane doesn't crash, the descent rate generally can't hurt you. If the plane crashes, the horizontal deceleration is likely to do far more harm than the vertical deceleration. That said, 18,000 feet per minute is pretty fast, like 180 knots, so unpressurized it could cause possibly ear & sinus damage.

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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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Fuel dumping (or a fuel jettison) is a procedure used by aircraft in certain emergency situations before a return to the airport shortly after takeoff, or before landing short of the intended destination (emergency landing) to reduce the aircraft's weight.

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It's called a ground loop. When a plane lands the pilot has to quickly do two things to keep the plane going straight: get ALL the wheels tight on the ground, and use the rudder and to steer the plane straight. If there is a strong crosswind, it can be quite tricky to do this in a small plane.

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You are scared of all those “what ifs” which we encounter when we are nervous. There is more risk in a take-off than landing. The aircraft is heavy with fuel & has no speed or altitude, whereas, in landing the aircraft is light, has tons of speed & is already flying.

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Turbulence, which causes planes to suddenly jolt while in flight, is considered a fairly normal occurrence and nothing to fear. The movement is caused by atmospheric pressure, jet streams, air around mountains, cold or warm weather fronts, or thunderstorms, according to The Federal Aviation Administration.

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What's more bizarre is that they do it in the air while flying. Tossing fuel into the air is a safe procedure for a good reason. Additionally, it is not as wasteful as it seems. Fuel disposal can occasionally be less expensive than not doing so.

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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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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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Different airplanes have different maximum altitudes, depending on their construction. For example, the Airbus A320 has a maximum altitude of 39,000 feet (11,900m) and the Boeing 747 45,000 feet (13,700m).

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Crashes that destroy the airframe are the most obvious answer, but minor, low-speed incidents on the ground can also bring a plane's career to an end. This was the case for a Saudia Boeing 747-300, which taxied into a ditch in Kuala Lumpur in 2001.

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