Glide Angle on the Ground is equal to the Glide Angle in the Air (at a given
airspeed plus or minus the wind; divided by the airspeed.

For landing, the basic concept (you need to read the entire chapter) is to
fly the landing pattern in a manner so you are on final approach below the
steepest possible glide slope possible with full dive brakes, and above the
mid-range glide slope. (half way between maximum and minimum possible.)

At the same time, the turn onto final approach needs to be above any
possible low-level turbulence (generally above 200 feet AGL.)

The most common error in flying gliders is to turn onto the base leg too
low, resulting in an even lower turn onto final. Turning onto final further
out and higher results in the same glide path to touchdown, but is far
safer.



"Slick" wrote in message
...
Can someone elaborate on the formula GAG=GAA(airspeed +/- wind)/airspeed

I'm a little confused on what GAA is and if it's just a constant number. I
kind of derived it as being 30 degrees as a constant target of angle you
want to the touchdown point (?). it works for Tom Knauff's calculation in
his book with 50mph a/s and 30 mph headwind, and using 30 for GAA. but
when
I reduce it to a 5 mph headwind the resultant doesn't come within the
cone.
Am I missing something here?



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