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  1. M

    How to extrapolate the curve that connects airfoil coordinates for aerodynamic shape carved into foam by hand without CAD?

    Hello I want to carve an aerodynamic shape based on horizontal and vertical airfoil coordinates and a single cross section to ensure fit then extrapolating to every airfoil coordinate along the body. How can I extrapolate this curve? I have seen the Arnold Company videos where he uses...
  2. A

    Why was the AR-5 retired from use?

    Evening, New member here, I'm a recently qualified microlight pilot in the UK (very similar to Sport Pilot in the USA, fixed wing MTOW 990lbs, stall <35kts etc day VFR only) I've always been interested in aircraft and would love to buy either my own aircraft, or a share, perhaps next year. I...
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