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Posts Tagged ‘long arm canard’

Close coupled vs long arm canard

Posted by picard578 on August 23, 2014

Canards overview and general effects

Canard is a small control surface placed in front of the main wing, similar to how tail is behind it. There are two main variations – long arm and close coupled canard.

Canard has a major advantage over the horizontal tail in the level flight. As aircraft passes through the transonic region, aircraft experiences an increased nose-down trim change. Control surface has to counter it; and while horizontal tail provides download, causing a large trim-drag penalty, canard can help provide upload, reducing need for elevon/tail trim and thus reducing level-flight drag. Further, canard also allows for an aerodynamically clean end of the aircraft with superior area distribution when compared to the tailed configuration, reducing supersonic drag.

Canard provides lift when aicraft is turning Read the rest of this entry »

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