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For a thorough but deep description look at the link in the Related links section below.
The basis principle states that for an object in motion in a fluid (or a stationary object in a moving fluid), the pressure of the fluid on the body decreases as the speed of the fluid over the body increases. Air is considered a fluid for aerodynamic purposes.
The basic cross section of an aircraft wing is a bottom surface that is essentially flat or slightly curved (the term is "camber", for the purists) while the upper surface is much more curved. For the sake of demonstration (and ignoring a lot of variables and factors), assume that the wing is 5 meters from the front or leading edge to the back or trailing edge (a distance called the "chord" of the wing), including flaps, and the plane is traveling at 100 meters per second (m/s), or 224 miles per hour for the US readers.
When moving through air at 100 m/s, the air flows over the 5 meters of flat bottom surface at roughly 100 m/s. However, the curved upper surface means that the distance that air moves over it from front to back is more then 5 meters. If the curve adds 1 meter to the distance, air must travel over 6 meters of surface to go the 5 meters from front to back. The only way that can be done is for the speed of the airflow to increase to 120 m/s over the curved contour of the wing.
By Bernoulli's Principle, this results in lower pressure on the curved surface than on the flat lower surface. ergo lift is generated. The formulas for calculating the lift are beyond the scope of this post, but are included in the Wiki article.
An aside: helicopters aka rotary wing aircrafts typically use a symetrical blade cross-section. The rotor has no inherent lift, to avoid instability when the rotor is spinning while on the ground. Its lift is created by rotating the blade on its long axis so that it moves at an angle (pitch) to the plane of rotation.
Class dismissed :-)
What else can I help you with?
How can planes fly upside down?
Planes can fly upside down by generating enough lift from their wings to counteract the force of gravity pulling them towards the ground. This is achieved by adjusting the angle of the wings and using the engine power to maintain the necessary speed and control.
What are the advantages of Bernoulli's principle in airplanes?
Bernoulli's principle explains how the difference in air pressure above and below an airplane wing creates lift, allowing an airplane to fly. Understanding and applying this principle helps in designing more efficient and aerodynamic aircraft. It also aids in explaining the physics behind flight maneuvers and improving aircraft performance.
What is bernoulle's principle?
The Bernoulli principle states that the speed of a fluid increasing and its pressure decreasing happen at the same time. It's the physical property that planes depend on for flight, because the speed of the air beneath the wing is slower, and thus the pressure higher, pushing it up.
What principle explains why planes fly?
The Bernoulli Effect, which states that the air moving under the flat plane of a wing's surface is traveling slower than the air traveling over the curved top surface, which creates upward-pressure due to the difference in airspeed. Put your hand out a car window sometime and hold it flat (parallel to the ground) as you travel faster and faster. At normal in-town speed, you will observe little effect, other than the wind moving the hairs on your skin. At highway speed, you will be able to observe the Bernoulli effect in action, as the flat plane of your hand is pressed upward into the faster-moving air.
Do planes have gravity?
Planes are subject to the force of gravity just like any other object on Earth. Gravity is what keeps planes and other objects anchored to the ground, and it also affects their movement and flight. Pilots use gravity to control the descent and ascent of a plane, as well as to maintain stability during flight.
When Japanese attacked pearl harbor was damage done to the American planes?
a few empty planes on the ground a few empty planes on the ground
How do planes glide?
The same way it flies... Gliders are lighter and they use Bernoulli's principle for lift. and once they get speed they can keep flying... they also use updrafts from the ground to get lift
Why do planes have wheels?
To roll on the ground.
How high do planes fly at?
Normal planes go at 40,500 feet from ground.
Explain why planes cant be skew.?
Planes are flat and 2D so they cannot be skew. Hope this helps :]
Explain how two planes can be related and how two lines in those planes can be related in geometry?
because testacales are really big
Do planes have windshield wipers?
Yes they do, if only for use on the ground.
What is the invention of bernoulli?
he found the principle for the birds lift which benefited people to discover the air planes.
How do you piloting a Drone plane?
Drone planes are usually piloted by a person on the ground. The drone will normally have a built-in camera so the operator can see what's ahead of the aircraft. Think of it as someone flying a model airplane - the principle is exactly the same.
Did any us planes fight back on dec7?
Yes a couple of U.S planes took off from the ground but many never left the ground. The main thing that shoot down Japanese planes was the U.S anti-aircraft guns. We lost 2403 people at Pearl Harbor.
Why is helicopter better then planes?
With the exception of certain jump jets, helicopters can land easier than planes and better maneuverability. Planes are much faster and can carry stronger air to air weapons or bombs, but helicopters have better air to ground precision weapons. Helicopters are better for ground force support. helicopter requires less space instead of planes.
What are called principle planes and principle stress?
The principle stress is a maximum tension stress in a body where shear stress is zero and it acts on the principle plane. If a body is under both tension and shear then the principle stress is higher than the initial tension stress. You can calculate this and find the principle plane angle using Mohr Circle analysis or equations.
