How do helicopters fly?

Posted by Keshav Jain on


 



               Helicopters are lifted into the air by their large rotating propellers, or rotors. These work like long narrow wings, generating lift as they spin rapidly through the air. The tail rotor generates enough thrust to stop the fuselage spinning.



               A helicopter turns by increasing or decreasing the thrust of its tail rotor. It climbs by increasing the angle of attack of the rotor blades. It moves forwards by increasing the angle of the blade moving back on every rotation so that it pushes against the air.



Picture credit: google



 

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