"Glide ratio" is like the EPA mileage on the window sticker
Numbers, based on theory, pulled out of some tests that I won't ever be repeating.
I don't know exact distances or absolute altitude, en route.
"That" field is my next forced landing site, based on the angle of reference observed in performing autorotations, and varies from airframe to airframe. Never thought about that point being 5000 feet across the ground versus 5500 feet, just that it's within the cone (as someone has termed it). Seems to work at all altitudes, except very low and very fast. Gaining altitude makes the area included larger and a wind shifts it downwind.
My experience is that GPS positions lag actual, so distances derived therefrom to known points in a dynamic, non-surveyed situation can be dangerous.
Last edited by Devil 49; 10th Jul 2013 at 12:31.