Why would a glider have water ballast? If it is trying to stay aloft without an engine, wouldn't it be better to be as light as possible? - Quora
aerodynamics - How are the glide polar and L/D ratio charts related? - Aviation Stack Exchange
Lift-to-drag ratio - Wikipedia
Glider Polars
Hanson's Minnesota Soaring Club Glider Info
Exploring the Polar
Exploring the Polar
Destiny Altitude: Performance, Speed-To-Fly & Instability Calculator
Glider Polars
Lift-to-drag ratio - Wikiwand
glider - How to calculate or design glide ratio? - Aviation Stack Exchange
S7 | Glider Pilot Shop
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Glider Polars
Optimal Soaring: What Is the Best Speed to Fly? Author(s): Michael A. Lundin Source: Math Horizons, Vol. 15, No. 4 (April 2008),
Sailplane Stories & Ressources: Mesured sink polar of LS6
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Glider Polars
RC Sailplane Glide Polar Measurements | Model Aviation Library
Aerodynamics
aerodynamics - How are the glide polar and L/D ratio charts related? - Aviation Stack Exchange
