How does an airplane generate lift and stay airborne?

An airplane stays up in the sky by pushing air down, which pushes it up, just like when you jump on a trampoline and bounce back.

Lift is what makes airplanes fly. It's like a special kind of upward push that happens because of how the shape of the wings works with the moving air.

How Wings Work

The top part of an airplane wing is curved, while the bottom is mostly flat. When the plane moves forward, air flows over both sides of the wing. The curved top makes the air move faster, and when air moves faster, it pushes less hard on the wing. Meanwhile, the slower-moving air under the wing pushes harder. This difference in push creates lift, which helps the airplane rise.

How Airplanes Stay Up

Once an airplane is up high, it keeps flying by keeping its speed just right. If it goes too slow, it might fall, like when you stop jumping on a trampoline and sink down. But if it keeps moving forward at the right pace, lift stays strong, and the plane keeps floating in the sky, just like a leaf riding on a breeze. An airplane stays up in the sky by pushing air down, which pushes it up, just like when you jump on a trampoline and bounce back.

Lift is what makes airplanes fly. It's like a special kind of upward push that happens because of how the shape of the wings works with the moving air.

Take the quiz →

Examples

  1. A child blows across a piece of paper to make it lift
  2. A toy airplane flaps its wings to stay up
  3. A fan creates wind that lifts a small model plane

Ask a question

See also

Discussion

Recent activity

Categories: Physics · airplane· lift· aerodynamics