We operate some really high performance gliders. A DG1000 and a DG808b. Both have tiny frontal areas, high aspect ratio wings and are optimized for 65Kts and less. To compare lift over drag of the 2 aircraft is absurd. Put 100 foot of wingspan on the cardinal, remove the prop and it would do the same thing. It might even achieve a L/D of 50 to 1 just like the best gliders, regardless of nose shape.
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