About this Plan
Comet Clipper. Free flight gas model. Classic design. This seems a modern, faithfully hand-drawn copy of the 1930s Comet design, here drawn by A Kreiger. This version of the plan includes the wing ribs.
Direct submission to Outerzone.
Pic is from an ad in May 1939 Air Trails, thanks to JeffMac.
Update 29/02/2020: Added zipfile of CAD drawing of airfoils, thanks to Edson Nóbrega. (includes 3 files in dxf, pdf, cdr format).
Quote: "Hi Steve. Here are the files. On the right side the airfoils are ready, just apply a scale to adjust to anyone's project. I also attached the files in Corel Draw in case anyone wants to edit them in that software. The profile flows smoothly between rib 1 to rib 9 and smoothly from rib 9 to rib 18. At the root is under cambered, the W-9 is flat at the bottom and the tip is symmetrical. Regards,"
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User commentsThe airfoil is incorrect. the comet Clipper, by Carl Goldberg, Has a under cambered rib at position 1, a flat bottom rib at position 9 and a full symmetrical at rib 18. The lower airfoil curve is designed to flow smoothly between rib 1 to rib 9 and smoothly from rib 9 to rib 18. The top airfoil curve, at maximum height is a straight line between rib 1 and rib 18.. i was a friend of Carls and produced the P&W Partial Kits. John Pond made a plan for the 10 foot Clipper Mk 1 that showed the airfoil under cambered from rib 1 to rib 18. This is not an accurate scale up!!
anon - 28/03/2018
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