Thread: Tail Types
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Old 07-04-2009, 05:21 PM
Zathros Zathros is offline
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The torque was so great on the Corsair F4U, WW2) that a stall strip was installed on the right wing to stall with the left wing it so the huge propeller would not throw the plane over. It is not a myth but the interplay within the forces may be a little understood. When an airplane is climbing the blade going down relative to forward motion has greater forward speed than the blade going down towards the retreating wind. This makes one side of the propeller cut into the wind better. This causes the plane to want to cork screw and is why much pedal force is required when taking off especially at greater angles of attack. This force becomes less prevalent when at full speed but propeller planes do not fly straight anyway, they crab a little, for various reasons, such as wind aloft and the unbalanced nature of the beast. Tail draggers that apply too much power without the appropriate rudder offset will flip right over while on the ground (ground-loop). From "Wikipedia", in reference to the F4U Corsair,

"If the throttle were suddenly advanced (for example, during an aborted landing) the port wing could stall and drop so quickly that the fighter could flip over with the rapid increase in power. These potentially lethal characteristics were later solved through the addition of a small, 6 in (152 mm)-long stall strip to the leading edge of the outer starboard wing, just inboard of the gun ports. This allowed the starboard wing to stall at the same time as the port.
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