Dr Hsu, As you advance through your flight training, your instructor should teach you about trimming. You don't trim for attitude, or weight and balance, you trim for airspeed.
And the main purpose for trimming is to relieve the stick pressure from the pilot while in stable flight. Every speed will cause a different pressure and a different trim setting - if you have an adjustable trim system. If you don't have a trim system, like some ultralites and gliders, you just deal with the pressure. It's like driving a car that needs a front end alignment. There's nothing wrong with the KR's W&B - it's not sensitive. The issue here has nothing to do with W&B and everything to do with the elevator balance being tail heavy in this individual airplane. Your KR has an elegant solution to this "issue" (that all aircraft share) - it has an in-flight adjustable trim tab. Here's a GREAT article on W&B. http://www.n56ml.com/wb/index.html It's about Mark's KR2S, so your mileage may vary. Pat On Mon, Mar 30, 2020 at 10:25 AM Dr. Feng Hsu via KRnet < krnet@list.krnet.org> wrote: > Thanks Bob. It looks like the KR2 (given its light weight & compact design) > is very sensitive on load and weight & balance ... Yes, I agree if the back > pressure is quite dynamic wrt load/copilot weight etc, there is not much we > can do except using innovative solutions, such as adding a spring or two on > the elevator or ground adjustable trimtab... This would probably slash off > your cruising speed for half a kt per hour giving the same rpm or fuel > consumption rate, perhaps? > > Kindly, > > Dr. Hsulist.krnet.org <krnet-le...@list.krnet.org> > _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
