A glider is an aircraft designed to fly purely using aerodynamic lift, requiring no internal combustion engine for propulsion. Its stable flight path is dictated by the principles of lift, drag, and weight, necessitating precise airfoil construction and structural integrity. Operationally, gliders maximize efficiency by converting gravitational potential energy into forward momentum, enabling long-distance flight by exploiting atmospheric currents, such as rising columns of warm air (thermals) or favorable wind patterns. The performance metrics of such machines are defined by their glide ratio and overall aerodynamic refinement, allowing for controlled, energy-efficient flight across varied terrains.