I am surprised at the negative consensus regarding the 23012 airfoil. In
addition to the certified a/c already mentioned George Pereira used it on his
Osprey 2, although his wing is very different than the KR. I do think the
subject has been exhausted.
Mark, I feel that I have an advantage over you in that I am aware of,
and impressed by, your talents as a designer as well as an engineer. However,
you did make a remark to the effect that anyone questioning spar strength must
be new to aviation, not a pastry chef, you said.
To introduce myself, I flew carrier based night fighters in WW2,
squadron VF[n]52. During the four years I flew for the Navy I flew F4F
Wildcats, F6F Hellcats and F4U Corsairs.
Called up during the Korean war I flew helicopters in a carrier based
anti-submarine squadron. [Dipping sonar]
After retirement [civilian job] I flerw competition aerobatics in a
Pitts Special, Reg.#12RT. Only thru advanced. it was a two hole Pitts.
I built a WWI SE5A replica in 1981. I flew it in air shows around the
country and sold it to Frank Ryder for his Aerodrome 92 Replica Fighter Museum
in Guntersville Al. The last FAA certificate was issued in 1999 to an Andy J.
Parks, Highlands Ranch, Co.
I hold a commercial license #488230 with single and multi-enginr land
and rotorcraft-helicopter limitations. I have over 3500 hours STICK TIME in
everything from a J-3 to a C-47.
