Here's a couple of pages that helped me start thinking about it: https://www.faa.gov/sites/faa.gov/files/regulations_policies/handbooks_manuals/aviation/glider

Here's a couple of pages that helped me start thinking about it: https://www.faa.gov/sites/faa.gov/files/regulations_policies/handbooks_manuals/aviation/glider_handbook/gfh_ch03.pdf https://www.faa.gov/sites/faa.gov/files/regulations_policies... http://www.ericbrasseur.org/glider_physics.html http://www.ericbrasseur.org/glider_physics.html