Why do planes fly at a constant speed?

Since there is no net external force on the aircraft, the aircraft will maintain a constant airspeed as described by Newton's First Law of Motion. However, if the forces become unbalanced, the aircraft will move in the direction of the greater force.



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In physics, constant velocity occurs when there is no net force acting on the object causing it to accelerate. In terms of airplane flight, the two main forces influencing its velocity forward are drag and thrust.

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If you watch a plane accelerating toward takeoff, it appears to be moving very quickly. It's not until the plane is in the air and has reached cruising altitude that it appears to be moving very slowly. That's because there is often no independent reference point when the plane is in the sky.

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The higher you fly, the more efficient it is The reason planes cruise at high altitudes is that they burn less fuel and can fly faster, as the air is less dense. At 30,000 feet and higher, it is also possible for aircraft to avoid weather systems, making it more comfortable onboard.

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Autopilot is designed to cope with turbulence and will keep the aircraft close to the intended flight path without the risk of overcorrection. The recommendation is to keep autopilot ON during a turbulence encounter.

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The entire time a flight is in the air, the pilots monitor all kinds of gauges to ensure that the plane performs how it is supposed to. Fuel is a significant concern for all pilots as they do not want to have more fuel onboard than is necessary for the flight.

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Pilots typically fly the plane during take off and landing. The pilot manually controls the plane until it reaches the required height. This usually only takes about five minutes. After that the pilot will usually engage the auto-pilot.

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An aircraft in straight and level flight is acted upon by four forces: lift, gravity, thrust and drag. The opposing forces balance each other: Lift equals gravity, and thrust equals drag. Thrust: The force that moves an airplane forward through the air. Thrust is created by a propeller or a jet engine.

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Most planes use a long runway before takeoff to gain enough speed for the plane to lift up into the air. Most airplanes can take off only if they are moving fast enough.

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An object has constant velocity when both the magnitude and direction of the rate at which such an object is changing its position remain constant. In other words, for an object to have constant velocity its movement has to not change directions over time and the object must have constant speed as well.

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Many airlines provide crew rest areas on their aircraft, where pilots can sleep during long-haul flights. These areas are usually located in the tail, cargo area or above the cabin of the plane and are designed to be as quiet and comfortable as possible. Other crew members prefer to use business class seats to rest.

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Use of visual entertainment such as movies, television programs, video games, etc., is not allowed for a flight crew as they are required to maintain visual scanning outside the aircraft, if able, for situational awareness and collision avoidance.

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Whether flying at night or during the day, pilots need to see some kind of horizon. They use this to determine the airplane's attitude. At night pilots will turn their gaze from outside to inside and use the artificial horizon. The artificial horizon is normally a simply globe split into two hemispheres.

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The simple answer is NO. Both the pilots have to be attentive even while the aircraft is cruising on autopilot. If a pilot sleeps in the cockpit and is cought by the authorities he can be fired or maybe suspended for a few days.

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Turbulence is a sudden and sometimes violent shift in airflow. Those irregular motions in the atmosphere create air currents that can cause passengers on an airplane to experience annoying bumps during a flight, or it can be severe enough to throw an airplane out of control. (The pilots) aren't scared at all.

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While turbulence can feel scary, airplanes are designed to withstand massive amounts of it. A plane cannot be flipped upside-down, thrown into a tailspin, or otherwise flung from the sky by even the mightiest gust or air pocket, wrote pilot Patrick Smith on his site, AskThePilot.com.

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The reason planes cruise at high altitudes is that they burn less fuel and can fly faster, as the air is less dense. At 30,000 feet and higher, it is also possible for aircraft to avoid weather systems, making it more comfortable onboard.

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In aviation, coffin corner (or Q corner) refers to the point at which the Flight Envelope boundary defined by a high incidence stall intersects with that defined by the critical Mach number.

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Most commercial airplanes have a certified maximum altitude of about 40,000 to 45,000 feet. Regardless of its certified maximum altitude, if an airplane flies too high, it may fail in one or more ways. For starters, the engine may suffocate from a lack of oxygen.

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