Dana, I flew the T-34 through departure stalls, which when held were violent. I found it difficult to fly through 60 degrees at 150. Anyone else familiar care to comment? Joe
----- Original Message ----- From: "Dana Overall" <bo12...@hotmail.com> To: <kr...@mylist.net> Sent: Tuesday, April 06, 2004 4:19 AM Subject: Re: KR>elevator mass balancing!! > >From: "Steve and Lori McGee" <lmc...@maqs.net> > >15 Gs - hahhah - hehheh - in a tail, thats a good one. > > > > > >----- Original Message ----- > >From: "Phillip Matheson" <mathe...@dodo.com.au> > > > Reasons > > > 1. twisting of the elevator tips > > > 2. the mass balance arm and mountings must be able to carry 15 times the > > > weight of the mass balance > > > ( 12 times minimum and 3 for safety factor). > > > >From this I would be concerned at adding 4130 lead filled tubing or > >similar > > > to my elevator tips. > > > Steve, I respectfully mention you may want to rethink your comment. Several > factors are present in the structural integrity of balance weights > positioned forward of the pivot line on aircraft control surfaces. I'm sure > an educated structural engineer like Mark or Don could chime in here to > expound on my comments but yes, G load would be a consideration due to the > forward extended moment of the counterbalance center. As the moment > increases, so does the required integrity of the potential point of failure. > A pull of G-factor on the airframe would result in an increased load > factor on an arm supporting an extended moment/weight combination. Think of > it this way: Would 1 lb. positioned at a moment of 8 inches exert the same > failure mode as 1 lb. positioned at a moment of 2 inches when introduced to > a 4 G pull. > > I just spent Friday, Sat and Sunday at a formation clinic using the T-34 > formation flight manual for a wingman card to allow formation flight > performace inside waivered airspace. The carrier brake from echelon > requires a 2.5-4 G pull from a 60 degree bank at 150. While this may seem > docile to some, remember the load factor on the flying surfaces increase at > back increases. > > Just food for thougt. > > > Dana Overall > Richmond, KY i39 > RV-7 slider, Imron black, "Black Magic" > Finish kit > 13B Rotary. Hangar flying my Dynon. > http://rvflying.tripod.com/aero1.jpg > http://rvflying.tripod.com/aero3.jpg > http://rvflying.tripod.com/blackrudder.jpg > do not archive > > _________________________________________________________________ > Tax headache? MSN Money provides relief with tax tips, tools, IRS forms and > more! http://moneycentral.msn.com/tax/workshop/welcome.asp > > > _______________________________________ > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html
