Quote:
Originally Posted by freebeard
I'll bet they can let the blade freewheel, and use hydrojets in the 'lampshade'.
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I've wondered if such phenom could be used to propel an aircraft.
I also wonder if instead of a hollow ring foil, linear airfoils with air ejection could be used for spoilers and diffusers on the rear of cars, to fill and fair the turbulence behind the car, reducing drag.
Thoughts?