how do helicopters fly?

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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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>how does it spin

It’s attached to a powerful engine

>if I theoretically have a massive fan that spun at extreme speeds will my house fly?

Yes

>Plus why do helicopters need spinny things when literally every other thing that flies just has wings and an engine

Because Helicopters and Planes are good for different things. Planes can’t hover in place, and need massive runways

>Also if the fan spins why does it spinning pull it up

A rotor is like a wing. The rotor moves through the air fast because it’s spinning, and that creates lift pulling upwards

>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.

Can you elaborate on what you mean by this ?

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