this post was submitted on 15 Sep 2023
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NonCredibleDefense
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"Without a propeller"!? When have you ever been able to see a propeller on a flying aircraft??
https://m.youtube.com/watch?v=3Okx0T5vpFc
True, it's a blur, just like last night with your mom.
All the time, the tip has to stay subsonic so they don’t spin that fast. 1021 RPM on an H-model herc for example.
the tip has to stay subsonic- that's what she saidHuh, interesting. It just seems like from a distance, while both it and the aircraft are moving fast, a visual determination of whether a propeller is there or not or not seems... difficult.
Depends on distance, angle, and lighting but they’re definitely visible from another aircraft. (Source: former c-130 flight engineer)
You can't see individual blades, but you can absolutely see the disc the propeller forms. Same with helicopters.
Here's a picture of the first us jet fighter prototype next to a propeller fighter, you can definitely tell a difference.
https://upload.wikimedia.org/wikipedia/commons/c/c1/Bell_P-59_Airacomet_060913-F-1234P-013.jpg