0
An air foil has a flat path underneath and a curved surface over the top. the air travelling over the curved surface travels slower as it has further to go than the same air underneath. this has the effect of causing a vacuum and therefore lift.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Which part of the wing produces more lift the upper part or the lower part?
Tough question to answer as asked. In normal airfoils, the top of the airfoil is thicker and curved and it is this thicker, curved section that causes the air to speed up as it flows over it. This increase in airspeed over the top of the airfoil results in a lowering of the pressure and it is that pressure differential between the top and the bottom of the airfoil that is known as lift. However, while the shape of the top of the wing is what generates lift, the force itself is applied to the lower part of the wing, hence the airfoil rises. I guess the best answer would be to say it is produced by the upper part of the airfoil and is applied to the lower part of the airfoil. Look up Bernoulli for a more detailed discussion.
How is Bernoulli's principle involved with the flight of a kite?
A kite acts as an airfoil - that's how it flys. (Faster flow over the top = lower pressure, etc).
What is lift on a airplane?
Lift is what " Lifts" an airplane off of the ground. Most commonly an airfoil wing is used to achieve lift. An airfoil is when the top of the wing is curved and the bottom is flat. This makes the pressure go fast over the top and slow underneath. This means more pressure under it at one time so that makes it go up! I hope that helped you!
What creates lift?
An aircraft in flight experiences an upward lift force, as well as the thrust of the engine, the force of its own weight, and a drag force. The lift force arises because the speed at which the displaced air moves over the top of the airfoil (and over the top of the attached boundary layer) is greater than the speed at which it moves over the bottom and because the pressure acting on the airfoil from below is therefore greater than the pressure from above,This is how planes get lift.
What is the force of lift?
The force of lift is what makes airplanes fly. It results from an effect called the Bernoulli Effect when air passes over and airfoil, a surface which is curved on the top and flat on the bottom. The air passing over the upper surface has farther to go and therefore goes faster than that passing over the lower surface. The faster-moving air causes the pressure above the airfoil to reduce, causing the wing to rise.
What is the difference how a helacopter creates lift and an airplane?
They both utilize airflow over an airfoil. The helicopter moves the airfoil (blade) by spinning them, as air passes around the blade it creates lift. An airplane uses thrust from the engines to push the airfoil (wings) forward through the air, the air then flowing over(lower pressure) and under them (higher pressure) produces lift.
Why wings are shaped like airfoil?
Wings are airfoils. The purpose of the airfoil it to accelerate air over the top of the wing and create an area of low pressure, which produces lift.
What is the factor described by Bernoulli's principle that allows airplanes?
Air over the upper surface of the airfoil is induced to move faster than that under its lower surface thus, according to Bernoull's principle, creating a region of lower pressure above the airfoil and a net lift on the airfoil.
Why do flow separates over an airfoil?
Because of a change in the angle of attack. When you exceed the critical angle of attack there is not enough wind passing over the airfoil and therefore disrupting lift, the airfoil stalls.
Which part of the wing produces more lift the upper part or the lower part?
Tough question to answer as asked. In normal airfoils, the top of the airfoil is thicker and curved and it is this thicker, curved section that causes the air to speed up as it flows over it. This increase in airspeed over the top of the airfoil results in a lowering of the pressure and it is that pressure differential between the top and the bottom of the airfoil that is known as lift. However, while the shape of the top of the wing is what generates lift, the force itself is applied to the lower part of the wing, hence the airfoil rises. I guess the best answer would be to say it is produced by the upper part of the airfoil and is applied to the lower part of the airfoil. Look up Bernoulli for a more detailed discussion.
How is Bernoulli's principle involved with the flight of a kite?
A kite acts as an airfoil - that's how it flys. (Faster flow over the top = lower pressure, etc).
What is important about a bird's wing's shape?
A bird's wing is shape like an airfoil. (See the related link Diagram of an airfoil below.) The airfoil is curved more on top, so the air flowing over the top of the airfoil moves faster that the air underneath. This creates more pressure underneath the wing, pushing up and generating a force called lift. This force keeps the birds in the air. (This is also how the wings of an airplane work.)
What happens to the airfoil section when it stalls?
The airfoil section remains the same, what happens is the airflow around it becomes separated from the surface. When airspeed becomes very small or the angle of attack of the airfoil is very large, the air flowing over the wing does not flow smoothly and becomes separated, leaving a high pressure regions. This causes immediate loss of lift production.
What is lift on a airplane?
Lift is what " Lifts" an airplane off of the ground. Most commonly an airfoil wing is used to achieve lift. An airfoil is when the top of the wing is curved and the bottom is flat. This makes the pressure go fast over the top and slow underneath. This means more pressure under it at one time so that makes it go up! I hope that helped you!
Will any shape work an airfoil?
Each aircraft has a different shaped airfoil. The purpose of the airfoil shape is to reduce drag over a range of speeds which the aircraft wing operates at while providing the least possible drag at the cruising speed (regular flight speed) in order to ensure good performance.
What creates lift?
An aircraft in flight experiences an upward lift force, as well as the thrust of the engine, the force of its own weight, and a drag force. The lift force arises because the speed at which the displaced air moves over the top of the airfoil (and over the top of the attached boundary layer) is greater than the speed at which it moves over the bottom and because the pressure acting on the airfoil from below is therefore greater than the pressure from above,This is how planes get lift.
What is pressure graident?
The difference in pressure over a given distance. The higher the pressure gradient, the stronger the winds.
