Hi;
Does anyone have diagrams of where the CG of a human is located in the sitting position? I'm doing some balance related work on a Murphy Renegade (altered to look more like a "Little Toot.")
I want to get the seating position close to correct. In my attachment, you can see 2 occupants, and the vertical line is my best guess at where the lift acts in steady level flight. I made the assumption that for each wing, the lift acts at about 25% chord, then accounted for the fact that there are 2 wings, and top one is swept 10 degrees.
The lift line cuts right through the front seater, and presumably, the CG of the entire aircraft would be a few inches in front of the lift. Also notice that the legs of the front guy are more scrunched up then the back seater, and I know this would affect the CG of that person.
My goal is to ensure that overall CG wouldn't change much if I had a light person or a heavier person in the front. So his CG should be close to the airframe's CG, at least in my mind.
So, anyone have any such diagrams?
Thanks, Tom.
Does anyone have diagrams of where the CG of a human is located in the sitting position? I'm doing some balance related work on a Murphy Renegade (altered to look more like a "Little Toot.")
I want to get the seating position close to correct. In my attachment, you can see 2 occupants, and the vertical line is my best guess at where the lift acts in steady level flight. I made the assumption that for each wing, the lift acts at about 25% chord, then accounted for the fact that there are 2 wings, and top one is swept 10 degrees.
The lift line cuts right through the front seater, and presumably, the CG of the entire aircraft would be a few inches in front of the lift. Also notice that the legs of the front guy are more scrunched up then the back seater, and I know this would affect the CG of that person.
My goal is to ensure that overall CG wouldn't change much if I had a light person or a heavier person in the front. So his CG should be close to the airframe's CG, at least in my mind.
So, anyone have any such diagrams?
Thanks, Tom.
