Counter Rotating aircraft/ship propellers.
If both propellers are on the same one shaft, how are they spinning in opposite directions at the same time?
Whats the configuration of contra rotating propellers?
How did engineers do that?
And whats the purpose of contra rotating propeller?
That propeller configuration fks my brain so much.
In: 1
There are also mechanisms [like this.](https://youtu.be/lx01utHcFtg)
This is a wicked cool mechanisms, used in some past airplanes, but this example is all 3-d printed, and actually made in a competition to make a good computer-cooling fan.
Am I right I’m guessing you were inspired to ask this question from this video?
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