How do sailplanes (gliders) stay aloft?
Gliders are usually towed to altitude by a motorized airplane and then use rising air from natural weather phenomenas such as thermals, mountain lee waves or ridge lift to stay aloft.
<START_INST>How do sailplanes (gliders) stay aloft?<END_INST><START_CTX><END_CTX><START_A>Gliders are usually towed to altitude by a motorized airplane and then use rising air from natural weather phenomenas such as thermals, mountain lee waves or ridge lift to stay aloft.<END_A>