Darryl Ramm wrote:
Analogous to the chicken sliding down a ramp, gravity there also only
acts through the center of mass yet the chicken does not fall
vertically. I think this is obvious to any chicken sliding down a
ramp. You need a chicken and a ramp and do the experiment then ask the
chicken to explain why.

That analogy is most fowl.

I felt compelled to google the words chicken and gliders and found this:

http://blog.modernmechanix.com/2006/...n-glider-nose/