EVH Tech: e-Propellers: Contra-Rotating

Updated by Bill Lofton 11/11/16


Courtesy of Eric Gideon and Wikimedia Commons (“Contrarotating“. Licensed under CC BY-SA 1.0 via Commons), avroshackleton.com, Sun Flightcraft (Hofbauer GmbH)
 

Contra-rotating propellers are two propellers with the same axis of rotation and opposite direction of rotation. With this arrangement, the trailing propeller mostly reverses the rotational air flow caused by the leading propeller, resulting in higher efficiency than two separate propellers or a single, larger propeller, especially at low airspeeds.
 

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Intro to Contra-Rotating Propellers

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Aircraft With Contra-Rotating Propellers

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Contra-Rotating Propellers Press, Other Info, and Videos

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