On Mar 14, 6:51*pm, Gary Emerson wrote:
toad wrote:
Standard STF theory says that the head/tail wind does not matter for
cruise flight. Does wind influence best speed for final glide ?

Todd Smith
3S

It's two separate issues. *Speed to fly AND altitude required. *Speed to
fly is NOT dependent on HW/TW. *HW/TW will affect Altitude required.

HW/TW also effect speed to fly to achive best glide over the ground.
The rule of thumb is to add half the wind speed to the best glide
speed. I am also not sure it doesn't matter for cruise flight. If you
have a 50 knots head wind you will not make any progress unless you
fly very fast. From what I understand from cambridge manuals they do
not take the wind into account for speed to fly.

Ramy