Forward CG needs more decalage to "keep the nose up" - i.e., the tail
has to be pushing down to counteract the noseweight. When the speed
increases, the down force on the tail will increase, being
aerodynamically determined, while the nose weight stays the same. Hence
the tail drops, the nose rises, and the plane balloons.
- John Leigh
Ade + Lamb Chop wrote:
>
> On 7 Mar 2001, at 18:50, Bill H wrote:
>
> > >try bring the c/g back a little
> >
> > Abe
> >
> > I am assuming that you mean to move the c/g aft?
>
> yes
>
> > Wouldn't that make it worse?
>
> I can't remember exactly why but a forward CofG makes the plane
> more stable in terms of the speed it wants to go. This is why it
> balloons after a dive because it is going too fast and wants to slow
> down...
>
> I set the c/g on my planes to be slightly forward of neutral... that is..
>
> after you have trimmed it for straight and level flight do a gentle dive
> across the slope... neutral is when it keeps going down the angle
> you pointed it.. If it is too far back it may even tuck under. I like the
> c/g to be slightly forward of the neutral point.
>
> Ade
>
> ICQ. 75653589
> www.adesite.co.uk
> ade.honda-mini.co.uk
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