There are a couple of methods that work quite well. ?One is to do the W & B of the plane empty, then have the pilot or someone of similar size climb into the cockpit and weight it again. ?You'll come up with an exact moment arm for the pilot when you back the numbers out of the original equation. ?
Another rule of thumb method that works pretty well is to run a measuring tape from a known point to the pilots belly button. ?Use the distance from the datum to the pilots belly button as the pilot moment arm. -Jeff Scott Los Alamos, NM > ----- Original Message ----- > From: To enter the Kingdom of God, > Sent: 03/06/13 11:03 AM > To: krnet at list.krnet.org > Subject: Re: KR> KRnet Digest, Vol 1, Issue 11 > > Center of gravity of occupant determination? How does one measure the > location of the cg of the pilot/passenger in the reclined position as in the > KR aircraft? It changes with fat/slim people! Does anyone have a simple > technique like balanced in a lawn chair? I want to be able to accurately > calculate w&b. I have sat in my KR assembled and supported the a/c on jacks > and balanced it but I would prefer to calculate it with center of mass data. > Can we discuss this topic? Thanks guentheraviator at yahoo.com
