This question already has an answer here:
I get confused sometimes because I hear different theories of how propellers generate thrust.
- One is that the propeller pushes air back to provide thrust.
- Another is the blades generate lift creating a high pressure behind the blade pushing the aircraft forward.
Is it just one of these true or is it both? For you guys its the same way of generating thrust, but to me its two ways thats my confusion. And why does a propeller need to generate lift if it just accelerates air backwards to provide thrust. That question is my main confusion.