How do airplane wings make lift?
A tilted, curved wing turns the air flowing past it downward. The air pushes back up, and the bent flow leaves lower pressure above the wing than below it. The popular “equal transit time” explanation is wrong.
Transcript
A jumbo jet weighs hundreds of tons. So what holds it up? The answer may not be what you learned in school.
A wing is tilted slightly upward against the air. That tilt is called the angle of attack. It, plus the curved shape, pushes the air flowing past it downward.
Newton's third law says that if the wing pushes air down, the air pushes the wing up. That upward push is lift.
Air also sticks to the curved top surface and follows it. This bends the flow, and the bending lowers the pressure above the wing. Higher pressure below pushes up.
You may have heard that air above must meet air below at the back, so it travels faster over the longer path. That equal transit time idea is wrong. Air on top gets there first.
Lift comes from a wing turning air downward, with lower pressure above and higher below.
Source notes
- NASA Glenn Research Center, “What is Lift?” — Supplied with the topic. Describes lift as a flow of gas being turned by a solid object, with the reaction force set by Newton’s third law.
- NASA Glenn Research Center, “Equal Transit Theory Interactive” — Supplied with the topic. Explains why the equal transit explanation of lift is incorrect.
How this example was made
Made with the prototype on 7 October 2026. The topic and references were typed in, a 60-second length and the kinetic type style were chosen, and the script and storyboard were written by Claude through the team’s subscription. We checked the script against the supplied pages and edited the hook before rendering, softening “not what most of us were taught in school” to “may not be what you learned in school”. “Air sticks to the curved top” simplifies how the flow follows the surface. The narration is the built-in voice, and the video was rendered at 1080×1920 and 30 fps.