----- Original Message ----- From: "Tim Engel" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, February 11, 2005 2:24 PM Subject: [RCSE] Dihedral affects upon wing span and area
For the purpose of official class rules, when is a 2-meter a 2-meter, or a Standard class ship 100 inches? And is the maximum allowable wing area for a ship like a Sagitta XC (which really toes the line on the max area limit) calculated in the flat or from the projected span after dihedral is added?
It has always been projected span. At the 1980 Nats 2-meter pilots meeting, one of the contestants ask the CD if the wing span had to be less that 2 meter at rest or in flight. When the CD said the span was measured at rest, the contestant brought out a standard class model that had the outboard panels attached with hinge tape. At rest, the outboard panels hung down and the span was less than 2 meters. In flight, the air loads were supposed to hold the wings extended for an in flight wing span of 100 inches. The whole thing was a joke on the CD and the model was just a non flyable mockup. The CD was Gordon Pearson, a notorious practical joker. Wish I could remember the name of the modeler who got even with Gordon.
Chuck Anderson
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