How can gliders fly without propulsion | The most complete explanation

Support my work here Watch this video in Spanish here Special thanks to Stefan Langer, a professional glider pilot who provided live action footage of real gliders. Visit his channel Gliders are airplanes heavier than air that can be kept in flight without an engine. How can you fly without an engine? That is what is explained in this video in addition to several curiosities about these aircraft. According to