I get that the spinny fan like pulls it up but like how does it spin because if I theoretically have a massive fan that spun at extreme speeds will my house fly?
Plus why do helicopters need spinny things when literally every other thing that flies just has wings and an engine. Also if the fan spins why does it spinning pull it up like when it’s on the ground it stays still but when it’s in the sky u can like manoeuvre it 360 like what.
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So…if you have a wing moving through the air it generates lift. If you don’t move it fast enough the plane that the wing(s) are attached to can’t stay airborne. Put 2 or more wings onto a central spindle and spin it. This fan generates lift and the helicopter it’s attached to goes up. Put some powered joints where these wings are attached and you can shift the lift to go forwards, backwards and side to side. The problem with a big rotor like this is, if you are spinning something one way, the thing that is supplying the power will spin the other way. The way round this is to put a smaller rotor on the tail of the helicopter that will direct lift to the side to counteract this. By adding or subtracting power to this little rotor you can turn the helicopter left and right.
It’s more complicated than this but I hope it’s ok for ELI 5
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