I stand corrected! Didn't realize the glide ratio was that high. Makes my
point even better.

Shawn
"Robert Moore" wrote in message
. 7...
"ShawnD2112" wrote

And remember that glide performance has nothing to do with
weight but to do with wing design.

TRUE!!

And, if I remember correctly, a 747 or like glides just about
like a 172 does,

NOT TRUE!! A B-747 has about the same glide ratio as the B-707s
that I flew for 17 years, 20:1 or better. From 35-37,000'(6nm),
we could do 125nm easily.

it just needs a faster airspeed to do it, but does it at the same
kind of angle.

TRUE!! About 250kts plus or minus depending on weight.

Bob Moore
PanAm (retired)