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  1. Petehdgs

    Certificated to experimental for leading edge cuffs

    I appreciate your thought on this, but the numbers I came up with are a little lower. There were about 7000 180 & 200 HP Mooneys made, about 5000 of those are short body Cs & Es. 1% of that is 50-70 units. That would be the number who would find value in a soft stall and speed reduction on...
  2. Petehdgs

    Certificated to experimental for leading edge cuffs

    So I ran a quick test on the 63-215 airfoil and compared it to the published data and am really disappointed. The sharp stall apparent in the published data is no where near duplicated with any accuracy at all. That means I can't make decisions based on reliable data. Unless something changes...
  3. Petehdgs

    Certificated to experimental for leading edge cuffs

    You all have been a big help. I now have a copy of designfoil and will take a look at the GA airfoil, 6x, and a GA-6x combo to see if there is anything worth pursuing first. I admit it might not be worth the time, but you never know until you look. One Miracle at a time! Thank you all.
  4. Petehdgs

    Certificated to experimental for leading edge cuffs

    Thank you all for your replies. There is a lot of good information presented here. I will start by getting some engineering data together, then discuss with an FAA DER to see if further pursuit is warranted. Since the Mooney uses both a 63-215 and a 64-412 it looks like a good place to start...
  5. Petehdgs

    Certificated to experimental for leading edge cuffs

    Years ago I read about a Cherokee 140 owner who wanted to experiment with Vortex Generators, which at the time were a new idea. He converted his certificated airplane to experimental so he could do his research on his own plane. Now Vortex generators are available for all kinds of applications...
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