Interesting. Except for nose radius the rules seem very generous.
Wing loading would include just about any sailplane over 1.5 meters. Organic is at 7.8oz/ft, the Supra is at 8.2oz/ft. However many DLGs are now less than 3.95. Not able to compete in FAI or AMA event? And what about nose radius?
Wing area is very generous, an ICON is 1,150" sq, even a 4M Thermic XL is only 81 dm2 (1,266" sq)
So are there any currently manufactured planes, (TD, over 1.5 meters), that do not meet these rules? And would you want to fly them in competition? Maybe a 3.3 meter F3J with 3.95oz wing loading? :-)
Steve Meyer SOAR LSF IV At 07:48 PM 4/11/2006, Bill's Email wrote:
This wonderful link holds the answers to your questions: http://www.modelaircraft.org/comp/0506Rulebook/RCsoaring.pdf Quoting: "3.3. Sailplanes flown in AMA soaring competitions shall not exceed the FAI limitations for weight and total lifting surface area for model sailplanes. Exception: The FAI nose radius restriction shall apply to one (1) view only; however, knife-edge frontal area is prohibited." And more: "FAI Specifications: 1. Maximum surface area (ST)150 decimeters2 (2325 square inches). 2. Maximum flying mass5 kilograms (11.023 pounds). 3. Loading on the ST between 12 and 75 grams/decimeters2 (between 3.95 and 24.57 ounces/square feet). 4. Minimum radius of fuselage nose7.5 millimeters (.295 inches). Exception: The FAI nose radius restriction shall apply to one (1) view only; however, knife-edge front area is prohibited."
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