How do thermal currents affect the gliding capabilities of an aircraft?

Thermal currents, which are rising columns of warm air, play a key role in gliding and soaring flight. When an aircraft encounters these thermal currents, it can gain lift without the need for engine power. This helps to maintain or even increase the altitude of the aircraft. By utilizing these rising air currents, a pilot can extend the duration of the glide and improve the overall performance of the aircraft in the air.

In particular, thermals are essential for glider pilots who seek to stay aloft for extended periods. By circling within the thermal, the glider can gain significant altitude, allowing the pilot to cover greater distances without descending. This ability to ride thermals not only enhances the glider's performance but also offers greater maneuverability and efficiency in the air.

Therefore, the effect of thermal currents on the gliding capabilities of an aircraft is primarily positive, facilitating altitude maintenance and extending flight duration.