Tuesday, 16 November 2010

Coaxial helicopter rotors

I noticed a toy helicopter recently with 2 sets of blades. It was a remote controlled vehicle and I presumed that the blades rotated in opposite directions to solve the torque problem. I thought this a clever solution.

A friend informed me that this is a solution that has been used in real helicopters. I was familiar with fore and aft rotors but unaware that a coaxial system existed!

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