The propeller is just a big fan in the front of the plane to keep the pilot cool. Want proof? Make it stop; then watch the pilot break out into a sweat.

The propeller is just a big fan in the front of the plane to keep the pilot cool. Want proof? Make it stop; then watch the pilot break out into a sweat.

<center><br><a href="http://www.sisodia.in"><img src="https://lh5.googleusercontent.com/-RAMKAeY9j4Q/Tx3X5MvHzYI/AAAAAAAAH90/cfS8C_r7pW8/s0/The%252520propeller%252520is%252520just%252520a%252520big%252520fan%252520in%252520the%252520front%252520of%252520the%252520plane%252520to%252520keep%252520the%252520pilot%252520cool.%252520Want%252520proof-%252520Make%252520it%252520stop%25253B%252520then%252520watch%252520the%252520pilot%252520break%252520out%252520i.jpg"></a></center>