File:Equal transit-time NASA wrong1 en.svg
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editDescriptionEqual transit-time NASA wrong1 en.svg |
English: There are many theories of how lift is generated. Unfortunately, many of the theories found in encyclopedias, on web sites, and even in some textbooks are incorrect, causing unnecessary confusion for students. The theory described on this slide is one of the most widely circulated, incorrect explanations. The theory can be labeled the "Longer Path" theory, or the "Equal Transit Time" theory. The theory states that airfoils are shaped with the upper surface longer than the bottom. The air molecules (the little colored balls on the figure) have farther to travel over the top of the airfoil than along the bottom. In order to meet up at the trailing edge, the molecules going over the top of the wing must travel faster than the molecules moving under the wing. Because the upper flow is faster, then, from Bernoulli's equation, the pressure is lower. The difference in pressure across the airfoil produces the lift. Source: [1] Image was cropped from original slide. |
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Author | רונאלדיניו המלך |
This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Vectorisation, english translation. The original can be viewed here: Equal transit-time NASA wrong1 es.svg: ![]()
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:04, 23 March 2024 | ![]() | 563 × 190 (11 KB) | JPxG (talk | contribs) | This image is, currently, being shown at the top of the page every time somebody Googles "lift" and it's not saying that it is the example of the false thing that isn't true! |
10:59, 27 March 2019 | ![]() | 563 × 190 (10 KB) | רונאלדיניו המלך (talk | contribs) | User created page with UploadWizard |
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