Airplane winglets: Why are they there?

The answer to this is kind of simple: Efficiency.

Winglets allow the wings to be more efficient at creating lift, which means planes require less power from the engines. Winglets help mitigate the effects of "induced drag." When an aircraft is in flight, the air pressure on top of the wing is lower than the air pressure under the wing.

Adapted from: Business Insider

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Written by: Sohail Sawlani