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A sailplane is a type of glider, which is an unpowered aircraft. Unlike other gliders, a sailplane is designed to rise in upward air currents, allowing it to stay aloft for extended periods. This is achieved through its efficient design, featuring a streamlined body and long, narrow wings that minimize sink rate and maximize glide distance.12

Sailplanes are launched either by being towed by another aircraft or by a ground-based winch. Once airborne, pilots use rising air currents, such as thermals, slope lift, or wave lift, to gain altitude. Instruments like variometers help pilots detect these subtle air movements. Gliding, and specifically sailplane design, originated and gained popularity in Germany after World War I.2

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  1. sailplane
  2. gliding

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