# Bernoulli's equation and an airplane's wing?

# Research on how does changing the shape of a paper airplane's wing affect it's flight?

Research shows that for a stunt paper airplane, smaller wings withforward-concentrated weight are optimal. For a glider, make a largewingspan and light, evenly balanced weight. Also, the wider thewings are the easier it will be to gain lift and the more narrowerthe wings are the harder it will be to… stay in the air longer. (MORE)

# What is Bernoulli's Principle?

The relationship between the velocity and pressure exerted by a moving liquid is described by the Bernoulli's principle : as the velocity of a fluid increases, the pressure exerted by that fluid decreases. Airplanes get a part of their lift by taking advantage of Bernoulli's principle. Race ca…rs employ Bernoulli's principle to keep their rear wheels on the ground while traveling at high speeds. Bernoulli's principle, physical principle formulated by Daniel Bernoulli that states that as the speed of a moving fluid (liquid or gas) increases, the pressure within the fluid decreases. The phenomenon described by Bernoulli's principle has many practical applications; it is employed in the carburetor and the atomizer, in which air is the moving fluid, and in the aspirator, in which water is the moving fluid. In the first two devices air moving through a tube passes through a constriction, which causes an increase in speed and a corresponding reduction in pressure. As a result, liquid is forced up into the air stream (through a narrow tube that leads from the body of the liquid to the constriction) by the greater atmospheric pressure on the surface of the liquid. In the aspirator air is drawn into a stream of water as the water flows through a constriction. Bernoulli's principle can be explained in terms of the law of conservation of energy (see conservation laws, in physics). As a fluid moves from a wider pipe into a narrower pipe or a constriction, a corresponding volume must move a greater distance forward in the narrower pipe and thus have a greater speed. At the same time, the work done by corresponding volumes in the wider and narrower pipes will be expressed by the product of the pressure and the volume. Since the speed is greater in the narrower pipe, the kinetic energy of that volume is greater. Then, by the law of conservation of energy, this increase in kinetic energy must be balanced by a decrease in the pressure-volume product, or, since the volumes are equal, by a decrease in pressure. . (MORE)

# What about an airplane's wing helps it to fly?

Because of the shape of the wing, the distance over the top is longer than the distance via the underside. Therefore the air has to travel faster over the top. Now Bernoulli's Principle states, the greater the speed of a fluid the less the lateral pressure, ergo the pressure is less on the top of th…e wing, and lift occurs. (MORE)

# Explain bernoulli's principle?

In simple terms, if a fluid is flowing through a pipe, as the radius of the pipe decreases the speed of fluid flow must increase and visa-versa.

# What is bernoulli's law?

This is an important principle involving the movement of a fluid through a pressure difference. Suppose a fluid is moving in a horizontal direction and encounters a pressure difference. This pressure difference will result in a net force, which by Newton's 2nd law will cause an acceleration of the f…luid. (MORE)

# What does Bernoulli's Principle state?

Bernoulli's principle states that an increase in the speed of a liquid results in a decrease in pressure, and a decrease in the speed of a liquid results in an increase in pressure Bernoulli's Principle states that as the velocity of a fluid increases, the pressure exerted by that fluid decreases.

# Examples of bernoulli's principle?

An airplane wing. The top is curved, so the air traveling over the top of the wing needs to travel faster than the air going along the bottom. As the velocity of air increases the pressure decreases.

# What forces act on an airplane's wing?

There are four. Lift, drag, gravity and thrust. Let's break it down..
Thrust comes from the engines. Either the drives are attached to the wing or to the body of the craft and thus to the wing. Thrust moves the aircraft (and its wing) forward..
Drag is the aerodynamic resistance of the wing. The a…ir cannot flow perfectly around the foil, so drag is created along the top and bottom surfaces. There is a good supply of drag on the leading edge of the wing, too..
Gravity pulls the wing down (along with the rest of the craft)..
Lift is last. It has two components. One is kite effect. We know how a kite works. Air pushing against the "slanted" bottom of the kite pushes it up and back. The string limits back movement, so up it goes. (The "up" angle is called the angle of attack, by the way.) The engines force the plane forward into the air, and the air pressure on the underside of the wing forces it up like with a kite. Obviously if the wing is tipped down, there will be kite effect in the down direction (negative angle of attack). The second component of lift is Bernoulli's principle. Owing to the shape of the wing, air flowing over the top moves more quickly than air along the bottom, and Bernoulli said that moving fluids have less pressure than stationary (or slower moving) fluids. Lower air pressure on top of the wing translates into lift. (MORE)

# What is Bernoulli's theory?

This is a very simple explanation that I have given to my Grade 6 students. Bernoulli's Theory, which originally was applied to his research in fluids & medicine (particularly blood pressure), helps explain how planes fly. He discovered the principal that the pressure of a fluid decreases when its s…peed or velocity increase, this prinicpal was also later discovered to apply to air pressure as well. This helps us to understand that when a plane is speeding up for take off, the faster it goes the less air pressure is exerted on it and therefore the plane is able to 'lift-off' the ground and fly. A plane that does not obtain sufficient speed on the ground, for its size & weight, may not be able to take off successfully. (MORE)

# What are the applications of Bernoulli's theorem in cricket?

The spin on the ball causing it to curve is explained by the Bernoulli principal

# What is bernoulli's experiment?

The Bernoulli experiment is a trial that has two differentoutcomes, failure and success. The experiment can be used inflipping a coin or rolling a die.

# What is bernoulli's principle of flight?

Bernoulli's principle says that air moving faster over the top of the wing is of lower pressure. The difference in the speed of the airflow between the top and bottom of the wing is due to the difference in "chord" length of the wing top and bottom. The classical wing shape has a longer chord over t…he top of the wing than the bottom. So the air must move faster over the top than the bottom. The difference in speed creates a difference in pressure. This pressure difference "sucks" the airplane up into the sky. Problem is...it isn't true, or at least it isn't the only factor causing lift. In particular, if this was the only thing causing lift then it would be impossible for a plane to fly upside down since the long chord of the wing would be on the bottom and the pressure difference would "suck" the plane downward. Most planes can indeed fly upside down. \n.
\nOne possible reason why an airplane might not be able to fly upside down is whether or not the airframe was designed for the wing to be loaded upside down. A 707 has been flown upside down, so very large aircraft not specifically designed for aerobatics can indeed be flown upside down.\n.
\nFurthermore, not all aircraft wings even have unequal chords. Indeed, the Wright flyer's wing had equal chords. Most paper airplanes have wings with equal chords.\n.
\nThe low pressure is insufficient to lift the airplane. Instead the airplane lifts primarily because the wings thrust a large amount of air downward as it passes the wing. Newton's third law. This thrust (lift) only occurs when the leading edge of the wing is above the trailing edge. If the plane is flown upside down then, as long as the leading edge is higher than the trailing edge, the air is still thrust downwards and the plane still lifts. This can be easily shown with a piece of stiff flat (equal top and bottom chords) cardboard held out the window of a moving car. If the front edge is above the trailing edge then the cardboard is forced upwards. If the front edge is below the trailing edge the cardboard is forced downwards. \n.
\nIt is humorous that airplanes have been flying for over a century, but many students are still taught a completely bogus explanation, involving just the Bernoulli principle, for the phenomenon.\n.
\nThe above answer does not 100% explain the behavior of a wing. Other factors, including Bernoulli's principle also contribute. The balance between the importance of say downward thrust of the air flow, the Bernoulli principle, drag, normal operation speed, normal operation altitude, wing strength, weight and a host of other factors control the optimal wing shape for a given aircraft. If you look at fighter aircraft which have a thinner wing design and that of a commercial 747 which have a much thicker wing design, which one would have the greater lift capacity? Which one is designed for speeds of 300-400 MPH versus supersonic flight (up to perhaps Mach 2)? Which one is designed for aerobatic maneuvers? What is the relationship between the thrust of the engines and the weight of the aircraft? Those factors, and many others, have a large affect on the optimal wing shape for a particular aircraft. (MORE)

# Bernoulli's principle explains why?

Bernoulli's principle was published by Daniel Bernoulli in his book'Hydrodynamica' in 1738. It states that for an iviscid flow, thespeed increase of fluid and the decrease in pressure occurssimultaneously.

# How does hydraulics help an airplane's landing gear?

Hydraulics help an airplanes landing gear by retracting it (raising it into the plane). Simple gravity is what pulls it down into place.

# What is the shape of a airplane's wing called?

The simple answer is an Airfoil. The upper surface of most aircraftwings, will have a curve to it ,while the lower surface isrelatively flat. Aerodynamic or it is said to be in the shape of 'aerofoil'

# How does an airplane's design allow flight?

Aircraft consist of a few major sections, the Wings, Empennage, Flight Controls and Fuselage. As the speed of the aircraft increases winds travel under the wings at a faster speed then going over the wing causing Lift. As long as there is enough lift it causes the Aircraft to fly.

# What is Daniell Bernoulli's Theory of Flight?

Bernoulli believed that the air flowing over and under an aircraft's wings created unequal pressures because of the curved shape. He believed that the air passing over the upper curved surface was 'stretched out' so it exerted less pressure. This created greater pressure underneath so the wing lifte…d..
The only thing wrong with this is that if it's true then planes should not be able to fly unsidedown!.
Steve (MORE)

# What is in an airplane's first aid kit?

They usually contain basic bandages such as band aids. They also usually have some protection like rubber gloves. Mostly all of them have some kind of disinfectant for cuts. More advanced kits contain tweezers and scissors. There are a huge variety of materials that can be put in a first aid kit.

# How is the lift equation useful when you are designing a wing?

A wing will generate lift according to the following equation: L = Â½ A C Ï vÂ² A = wing area C = lift coefficient Ï = air density v = air speed From the equation you can see that the lift force is directly proportional to the wing area. Double the wing area and you double t…he lift, all else remaining equal. The lift force is also directly proportional to the lift coefficient, which is a function of the airfoil shape, angle of attack and wing aspect ratio. Lift is directly proportional the air density, so this tells you that an airplane flying at sea level can produce more lift than if flying at 18,000 feet. Lift is proportional to the square of velocity, meaning that if you fly twice as fast you will generate 4 times the lift, all else being equal. (MORE)

# What is the color of an airplane's black box?

The black box is painted bright orange so as to make it easier to locate after a crash.

# An airplane's usual speed?

Small single-engined airplanes seldom exceed 140 mph, with more complex single- and twin- engine piston aircraft reaching 200 - 250 mph. Turboprop aircraft generally cruise in the 300 - 350 mph range, while nearly all jets (except military aircraft) cruise between 450 and 600 mph.

# What is the importance of bernoulli's principle?

BernoulliÃ?s Principle is a very important due to it being thestarting foundation for aerodynamics. Without this importantdiscovery we would not know that the velocity of a fluid (whichincludes air increases, its pressure decreases. Knowing thisprinciple enable us to fly in airplanes.

# What is Bernoulli's Principle help explain?

In the flow of a fluid, higher speed creates a lower pressure. When air (a fluid) moves over an airplane wing, the air moving over the TOP of the wing has to travel further than air moving over the bottom, so it is sped up. This creates lower pressure ABOVE the wing, and higher pressure air UNDER th…e wing pushes the wing up. Same principle applies to wind blowing across a sailboat sails. (MORE)

# What is different between Bernoulli's equation and Continuity equation?

Answer First, we use the continuity equation to relate the two velocities. The two areas are.
related by A1 = 4A2 (note that it's 4, not 2: if the radius doubles, the area quadruples.) Thus.
the continuity equation says that.
v1A1 = v2A2.
so that v2 = 4v1 (the.
uid in the larger pipe.
ows slow…er, and with greater pressure). Now using.
the above equation gives.
P1 ô P2 =.
1.
2.
(v2.
2.
ô v2.
1).
100 Pa =.
1.
2.
(1000 kg=m3)(16v2.
1.
ô v2.
1).
Solving for v1 gives.
v1 =.
s.
100.
(500)(15).
m=s = :12m=s.
To get the full Bernoulli's equation, we just need to include gravity like we did before. Now.
let's consider a pipe which goes up and downhill. Then we need to do work to get the water to.
go uphill as well, from y1 to y2. The potential energy is as always mgh. We then have.
(P1 ô P2)V =.
1.
2.
mv2.
2.
ô.
1.
2.
mv2.
1 + mg(y2 ô y1).
3.
Rearraging again gives Bernoulli's equation:.
P1 +.
1.
2.
v2.
1 + gy1 = P2 +.
1.
2.
v2.
2 + gy2.
If you set the velocities equal to zero like we were doing last time, then this equation reduces to.
our earlier one..
There are many consequences of Bernoulli's equation. In fact, Bernoulli's equation also.
applies to air. It's why planes.
y, and curve balls curve. The basic idea is that when air is.
moving faster, its pressure is lower. Thus if you manage to have an object like a baseball or a.
plane wing with dierent pressures on dierent sides, the object will feel a net force. A spinning.
baseball drags some of the air with it. This means on opposite sides, the air is moving at dierent.
speeds. This results in a change in pressure, and makes the ball move sideways. The shape of a.
plane wing causes the air rushing past to go faster on top. This lowers the pressure and hence.
causes the wing to lift up.. (MORE)

# How does an airplane's wheels works?

They roll due to the thrust of the Aircraft during taxi and take off. They roll on landing due to weight of the Aircraft transferred to the tires and it's speed at touch down. There is no drive shaft to roll the wheels only the energy in the airframe and powerplants.

# What is bernoulli's princeiple?

If you mean Bernoulli's principle, it's the statement that an increase in the speed of a fluid produces a decrease in pressure and a decrease in the speed produces an increase in pressure.

# What does bernoulli's principle state about fluids?

It states that along any streamline (a streamline is the path traced out by arbitrarily small element of the fluid), the following equality holds: p + Â½ÏvÂ² + Ïgz = constant p - static pressure Ï - density v - speed g - gravitational acceleration z - vertical position …The constant is the total pressure also called the stagnation pressure. This equation was derived for theoretically "frictionless" or zero viscosity fluids but it is a fair approximation for real fluids where friction is not playing a significant role in the flow. For the case of gases the last term is negligible, so you can say that wherever the flow speed decreases along that streamline, the static pressure will increase. Why along the streamline? Because that constant is only a constant for a given streamline. (MORE)

# How are the continuity equation and bernoulli's equation related?

Continuity equations describe the movement of constant. Bernoulli'sequation also relates to movement, the flow of liquids. For somesituations, where the liquid flowing is a constant, both acontinuity equation and Bernoulli's equation can be applied.

# How can an airplane's wing helps an airplane fly?

It's because the airplane needs space to store computers and gear but also because the airfoil creates lift usually the bottom of the wing is slightly curved but the top goes and curves sharply up and gradually goes down creating lift. P.S The flaps(These create more control at low speeds and produc…e extra lift while slowing down the plane) and ailerons(These change drag to "warp" the plane) don't hurt either! (MORE)

# How can we apply bernoulli's theorem on fliuds?

The total energy of flow of fluid is the sum of kinetic energy and potential energies. It can be written in terms of head. E = velocity head + pressure head + elevation head Where velocity head is the kinetic energy pressure head and elevation head are the potential energies. In symbol, th…e formula is E = v 2 /2g + p/Î³ + z To use the Bernoulli's theorem on fluid flow, consider two points within the path of flow. Label the upstream as 1 and the downstream as 2. Neglecting head lost, the energy at 1 is the same as the energy at 2. Thus, E 1 = E 2 or in complete equation v 1 2 /2g + p 1 /Î³ + z 1 = v 2 2 /2g + p 2 /Î³ + z 2 Considering the lost of energy between the two points, the equation will be E 1 - HL = E 2 or v 1 2 /2g + p 1 /Î³ + z 1 - HL = v 2 2 /2g + p 2 /Î³ + z 2 .
For more information about the formulas and how to do the calculations, refer to the "Sources and related links:" below. (MORE)

# How does lift push an airplane's wing upward?

A wing creates lift by imparting a downward momentum to the air flowing above and below it. The rate of change of momentum is equal to Force (Newton's 2nd law), and therefore a reaction force pushes the wing up, producing lift (Newton's 3rd law). The imparting of this downward momentum ("downwash…") to the air results from an air pressure differential above/below the wing. If you know the pressure above the wing and the pressure below the wing, and the wing area, you can calculate the lift force on the wing since Force = Pressure x Area. If you don't know the pressures, you can get a rough estimate if you know what the average air velocities are above and below the wing. A wing creating lift will have higher speed air flowing over the top of it than flowing below it. By employing Bernoulli's Principle, you can calculate a pressure difference corresponding to the difference in velocity. An airfoil shape is effective in generating lift since it helps to keep the air flowing smoothly around the wing, making the wing more effective in diverting the air downwards. Air tends to flow more smoothly around curved shapes rather than abrupt sharp edges which is why the top of an aircraft wing always is curved. Even a perfectly flat wing can create lift (such as in a toy balsa wood glider). However a flat wing isn't practical for a full sized airplane since it's not quite as effective in producing lift. The air doesn't flow smoothly past the sharp leading edge, resulting in a lot of drag and an abrupt stall. Note that there is no requirement that the air molecules separating at the leading edge and flowing below the wing meet up with the same molecules that flow over the top. This is called the "equal transit time theory" and is a popular science myth that unfortunately has found it's way into flight manuals and even some undergraduate texts. However, aerodynamics engineers have known ever since they started doing wind tunnel testing that the air flowing over a lifting wing reaches the trailing edge sooner than the air below it. This is true even for a perfectly flat wing. This can be explained in terms of the circulation theory, which is an advanced concept. (MORE)

# How bernoulli's equation is applied in hydroelectric generating stations?

It is used to determine the force on the turbine blades as water passes over them.

# How does Bernoulli's Principle apply to kites?

the kites are very colorfull and full of life the kites go very high in the air and they can fly

# What are applications of bernoulli's principle?

One interesting application is the one that makes airplanes fly. The wings are shaped in such a way that air moves faster on the upper side than on the lower side; the difference in pressure which this causes is the main reason the airplane keeps in the air.

# Why is bernoulli's principle a principle and not a law?

There is confusion over this because "law" and "theory" mean very different things in every day life compared to science. A "law" is just an outdated term for "theory." Theories are explanations of a phenomenon that have undergone rigorous experiments by scientists. A law is no more scientifically v…alid than a theory in science. A principle is usually more specific than a theory. For instance, you have the Theory of Quantum Mechanics and within that, you have Pauli's exclusion principle. (MORE)

# Do airplane's have a wheel and axle?

They should. A wheel is a circular device that is attached to a rigid bar in its center. A force applied to the wheel causes the axle to rotate. so if a plane lands while rolling on wheels, shouldn't it have an axle?...like a car? Think about it. -hope I helped a bit :/

# What is bernoulli's principle and its importance?

Bernoulli's Principle states that as the velocity of a fluid increases, the pressure of the fluid decreases. This is important in creating lift under an airplane's wing. Due to the shape of the wing, the velocity of the air (a fluid) flowing over the wing is higher, so the pressure over the wing is …lower. The velocity of the air flowing under the wing is slower, so the pressure is higher. This creates lift which allows the airplane to take off and fly. Refer to the Related Links for an illustration. (MORE)

# How does Bernoulli's principle Explain how airplane wings work?

The wind over the upper surface of the wing travels faster and that creates a low pressure column of air, which makes the plane lift.

# What is bernoulli's basic theory?

The basic idea of the Bernoulli's Principle is very much related to the idea of conservation of energy. Bernoulli states that for laminar flow of an ideal fluid, the energy density (energy per volume) is constant. In other words, the state (magnitude) of an incompressible and non-viscous fluid th…at is undergoing laminar flow remains constant. Bernoulli explains that the sum of the magnitude of the fluid's pressure, kinetic energy density and potential energy density at a given time remains constant under stated conditions. Definition: Laminar flow is when at any given point, the velocity of the fluid particles is constant. This means that any particle passing a particular point of the motion does so at constant velocity. Laminar flow usually describes the movement of fluids moving at slow speeds. Using Bernoulli's Principle, we can understand how fluid will behave if even one of the conditions (pressure, kinetic energy density and potential energy density) change. For example, if the pressure increases compared to the previous state, the other factor(s) must be lowered in magnitude compared to the previous state since the energy density is constant. (MORE)

# How does Bernoulli's principal relate to flight?

Bernoulli's principal is used on the wings of a plane. The wing of a plane is shaped in a certain way that the air that flows over the top of the wing takes longer to reach the back of the wing than the air that flows under the wing. This air flow creates a pressure drop. This helps the wing get "li…ft." Take a look at the cross-sectional area of a plane's wing and you will see a shape that makes air flow the way I described it. (MORE)

# Where did machine gun casings go when fired from an airplane's wing machine guns?

Depends on the design of a plane. Typically they fall out through special ports and fall to the ground.

# What are some applications of Bernoulli's principle?

Bernoulli's Principle can be applied to many areas. A common example would be in plumbing. Bernoulli's equation depicts how the energy density of a specific fluid is conserved. In other words, we can model a fluid's movement by obeying the principle. When designing a plumbing system, this principle …plays an integral role as it allows the plumbers and designers to know exactly the speed at which the fluid will flow, the height of the pipe(s) that will have to be used to contain a fluid that exerts a certain pressure. This idea is often taken for granted. If it is not obeyed and modeled carefully, however, the pipe can burst, the pressure may be too great or the fluid may not travel at all. We must always take into account the conservation of energy in fluid, as described by Bernoulli's Principle. (MORE)

# How Bernoulli's theorem is modified?

A statement of the conservation of energy in a form useful for solving problems involving fluids. For a non-viscous, incompressible fluid in steady flow, the sum of pressure, potential and kinetic energies per unit volume is constant at any point A special form of the Euler's equation derived along …a fluid flow streamline is often called the Bernoulli Equation For steady state incompressible flow the Euler equation becomes (1). If we integrate (1) along the streamline it becomes (2). (2) can further be modified to (3) by dividing by gravity. (MORE)

# Why airplane's and ship's body is steamlined?

THERE is no such thing as steamlined but there is streamlined it is because to reduce resistance of the air and water to use less energy e.g fuel

# How does an airplane's bomb bay work?

The bombs are hooked on with electrically operated latching hooks. In some aircraft individually triggered, in some all together. The bomb bay doors operate just like undercarriage doors with a hydraulic ram. When the bay doors are open, bomblatches can be triggerred and bombs will fall.

# What are the purposes of the slats and flaps of an airplane's wings?

Slats and flaps increase drag and also increase lift. The increase in drag slows the aircraft down, and the increase in lift lowers the stall speed, which slows the landing speed of the aircraft.

# Why pressure is inversely proportional to velocity in bernoulli's equation?

Usually in a streamlined motion the sum of three heads have to be constant always. They are pressure head velocity head and gravitational head In case of horizontal pipe gravitational head is already a constant Now velocity head + pressure head = constant So as velocity head increases then automatic…ally pressure head has to fall. (MORE)

# Does air passing over an airplane's wing travels faster or slower than air traveling beneath the wing?

Airplane wings are shaped such that the length of a path from the leading edge of a wing to the trailing edge is longer when going over the top than across the bottom. For this reason, air going over the wing must travel faster than air traveling beneath the wing..

# Where does the water from an airplane's toilet go?

It has traditionally just been dumped in flight. However mostcountries now have laws requiring a waste water holding tank onairliners.

# What are some applications to Bernoulli's principle?

Bernoulli's principle explains how plains fly. It also explains whysmoke rises out of a chimney, how an atomizer works, and how aflying disk glides through the air.