Hello everybody.
In my Squadron there are many contravertial oppinions about everything that has to do with CG limits of the C-130.
I am about to have a big test concidering my proffession (LoadMaster), and I want to break all the miths and half-true explenations, and, once and for all, to settle down the argument about the whole CG subject.
As far as I know, the CG Limits Chart (Allowable %M.A.C location relative to the Gross weight of the airplane expressed in 1,000 Pounds) combines in it the allowable CG limitations for all airplane operation conditions (Take-Off, Landing, Flying in the ground-effect area, Flying outside/above the ground-effect area, Flight in normal weather, Flight in turbulance weather, etc.) all togheter in one chart. In other words, we might have had a different chart for every different condition of those mentioned above, and we would have had to calculate the CG limits for every different flight condition in a different chart, and then cross all the figures together, and then we would get our generall CG limits for the whole flight. But What the Chart did is that it already crossed/combined all those different charts into one simple chart.
There is a reason for the front CG-limit and a reason for the rear CG-limit. We can see on the chart that it is drawn from 4 different mathematical Function-Curves combined together (two straight vertical lines and two curved lines).
Well, I will get to the point:
The thing I want to know is what does every curve stand for, what are the reasons for the speciffic numbers (15%, 30%), and what is the fhysical reason for every curve in the shape of the CG Limitations Chart.
This is one of the things I will have to explain in the test I'm about to have.
Can anyone answer my question? Or direct me to someone who might know the answer?
Thanks a-bunch, Yoel.
