Timeline for Does all of the air that 'leaks' from the bottom of the wingtip to the top create a vortex?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Dec 28, 2023 at 17:11 | comment | added | Camille Goudeseune | @Wyatt above Mach 5, see aviation.stackexchange.com/a/96788/31425 and the other answers there showing how simple things are when hypersonic. When subsonic, I've found it more useful (not more right, just more useful) to think only of air flowing from high to low pressure, and not going on to call the parts of the flow things like pulling or leaking or whatever. | |
| Dec 28, 2023 at 3:19 | comment | added | Wyatt | @CamilleGoudeseune oh okay, then what would prove my thought process wrong there? Like why is it only useful above Mach 5? | |
| Dec 28, 2023 at 2:45 | comment | added | Camille Goudeseune | @Wyatt Thinking of airflow hitting the airfoil like bullets striking a plate is a useful intuition only beyond Mach 5 or so. When subsonic, better than worrying "why does the air do this," just note "it has been observed that the air flows like this near this airfoil under these conditions." Pulling, leaking, pushing, all eventually lead to fallacies. | |
| Dec 6, 2023 at 21:16 | comment | added | Wyatt | hmm okay. My thinking is that the air that the wing is approaching hits the bottom, creating a high pressure there. Then, the air on the upper surface of the wing is becoming lower pressure because the wings surface is blocking the airflow. (To make it easier to understand, imagine the wing at a really high AoA) So after that, the flow leaking from the bottom of the wing would have to all get pulled by the upper surface because the 2 surfaces would have equal and opposite pressure differences. Not to mention the effect of the airfoil curve making the upper surface even lower pressure. | |
| S Dec 6, 2023 at 20:40 | review | First answers | |||
| Dec 7, 2023 at 0:51 | |||||
| S Dec 6, 2023 at 20:40 | history | answered | David | CC BY-SA 4.0 |