If a wing is built to some span dimension in the flat, then buy the time dihedral is dialed in, the projected span is something less. It follows then, that the projected area of a finished wing with dihedral is less than in the flat. The numbers quoted for kits & plans usually reflect the flat dimensions.
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? For example, I just happen to have an old RO-8 out that's a fairly extreme example. (inches) ....... RO-8 Span, Flat ... 78.8 Span, Proj ... 72.8 Area, Flat .... 690 Area, Proj .... 636 So what is "rules-legal" ? Not "Nostalgia original" to match what the designer chose to do, but class dimensional limits? Thanks, Tim RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
