Change in cruise speed?

Colorado182

Colorado182

Filing Flight Plan
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Colorado182
Anyone experiment with the change in cruise speed between a forward and aft CG?
What were the differences in your aircraft?
 
Colorado182 said:
Anyone experiment with the change in cruise speed between a forward and aft CG?
What were the differences in your aircraft?
Click to expand...

I used to load 50 lb sand bags into the baggage area in my plane when flying solo (Cherokee 180) to balance things out a bit..also used them when had heavy PAX up front where I needed that extra "shift" in CG. Maybe a couple knots extra for cruise speed. Not really noticeable.
 
SkyDog58 said:
What helps? A forward or aft CG?
Click to expand...
Aft CG reduces required downforce on elevator/stab so induced drag is reduced. Remember this for your com oral.
 
Moving CG aft will help most aircraft, except those with canard configuration probably. Moving CG aft means less down force required on tail, less lift from main wing, and therefore reduced induced drag. In my Mooney I see a knot or two if I slide my seat all the way back in cruise.


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Yep, moving the CG back gives me a few more MPH in speed in my Cardinal RG. It's nice when reality matches theory.

Gary
 
Clark1961 said:
Aft CG reduces required downforce on elevator/stab so induced drag is reduced. Remember this for your com oral.
Click to expand...
I got asked this on my private oral... It's pretty obvious if you think about it, fortunately, if you think about the relationship between center of lift and center of gravity.
 
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