It's not very useful, actually, other than for calculating glide angle,
e.g., given 1 kt sink rate at 60 KCAS (or is it KTAS) yields a glide
angle of 60:1 or 1:60.Â* But really, that's just a number, and it's
instantaneous, and pretty meaningless in flight.Â* Still, it's what many
in the world learned to fly with and there's no need to convert numbers
when the final result will be the same.Â* For me that's a lot easier to
visualize than 1.852 km/hr at 111.12 km/hr which, if divided = 60.Â* Same
result but a lot more work.

Glide ratio example:Â* I'm 20 NM from home (or 37 Km), my flight computer
says I need 23:1 to make it, but my current glide ratio is 15:1.Â* Will I
make it?Â* Who can say - there's a lot of air between me and home.

On 3/26/2018 9:07 AM, Tom BravoMike wrote:
I wonder how it can be useful in gliding. We don't fly along the meridians, i.e. North-South all the time, do we?

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Dan, 5J