Larry, some of the changes in the fuslage could help create the problem. My turtle deck and canopy sit about 3-4 inches higher than the plans call for. I have a dragonfly canopy with the turtle deck built to fit it. My test pilot is a high time 18,000 plus test pilot who has experienced this before. The "Marvel" research aircraft designed and built at MSU. The wing area was increased without the horizontal stabilizer inceased proportionally and the exact same thing happened.My test pilot was the test pilot on this craft. After the horizontal stab area was increased, the problem went away. Any combination of changes from the original plans could create a situation as my KR-2 has. I plan to increase the length of my horizontal stabilizer next week. It should not take but a few days. I will let you know the results. Thanks for you interest. Bill Page boliverp...@bellsouth.net
----- Original Message ----- From: "Larry&Sallie Flesner" <fles...@verizon.net> To: "KRnet" <kr...@mylist.net> Sent: Thursday, April 13, 2006 8:58 PM Subject: KR> spins, stalls, etc > >> >>As for tail stalls, I don't know what causes it, but several times I've >>done >>stalls that resulted in an immediate snap roll, several turns in a spin, >>and >>then end over end tumbles for a few thousand feet. >>Mark Langford, > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > Any such maneuver in YOUR KR could not be blamed on anything > but pilot error. :-) I still can't get my head around a pitch up when > approaching a stall. Seems to me you would be down loading the > tail and any tail stall or blanking out would cause a pitch down, not > up. Even if one takes into account that the C of L moves forward as > the angle of attack increases, I still can't see a nose pitch up. I also > suspect the Diehl wings have little if anything to do with it. Too many > KR's out there flying with them and no reported problems. There has > to be something more going on here, in my humble opinion. Then > again, I have been know to be wrong on more than one occasion. > > Larry Flesner > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
