On Sat, 19 Dec 2020 08:55:02 -0700, Dan Marotta wrote:

On 12/19/20 6:49 AM, Martin Gregorie wrote:
sin(glider weight)

How do you convert pounds, kilograms, stone, etc. to radians,
degrees...?

OK... glider_flying_weight * sin(climb angle)

This factor is needed because the tow rope is supporting a part of the
glider's flying weight - somewhere between zero in level flight to all of
it when a (jet-powered) tug is climbing vertically. At typical climb rate
on tow this amounts to a non-negligible fraction of the tension in the
rope.


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Martin | martin at
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