Bill,
I spent lots of time in my Mustang II with guys that were used to
flying General Aviation aircraft. Every one wanted to fly it. In all
the time I had it (800+hours) I can't remember anyone that was
successful at a stall sequence the first time. With out fail,
everyone over controlled it going into the stall, and more critical,
coming out. We either ended up in an accelerated stall or a couple of
times it actually snapped upside down.
Don't know what your qualifications are, but is there a chance it
would be worth letting a high time experimental pilot test fly it, or
maybe get one of the active KR2 guys to come fly it for you?
The reason I am asking these questions is I have an original fuselage
with a set of Diehl wings almost ready to fly. Keep us updated.
Bobby
Bill,
> KR-netters
>
> After consulting with the Aerospace Department at Mississippi State
> University concerning the pitching up of my KR-2 upon stall approach, a
> probable cause has been reached. The Horizontal Stabilizer is stalling
> prior to the wing stall. This may be caused by the longer wing by Dan
> Deihl. This creates a very dangerous condition. There are three ways to
> prevent this condition. (1) Increase the stabilizer area by increasing by
> several inches the length of the stab. The standard flat stabilizer is
> only about 50% as efficient as a stabilizer with a true airfoil which
> leads to the 2nd method of prevention. (2) Change the stab airfoil to a
> true airfoil which will increase the efficiency of the stab. And (3),
> Don't stall the aircraft, keep the airspeed well above stall.
> It has been noticed that some KR-2 builders constructed a true airfoil
> rather than the flat stab shown in the plans. Maybe it should be noted to
> other KR builders to do the same.
> You guys who have true airfoil stabs, where did you get your plans,
> technical info., etc. I would like to change my stab to a true airfoil.
>
> Maybe if I put Armorall on my horizontal stabilizer my problem will be
> solved.
>
> I'm still finding dingle berrys after that close call.
>
> Bill Page
> boliverp...@bellsouth.net
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