sesquiplane

airplane

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July 13, 2026

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A sesquiplane is a type of biplane, which is an airplane with two wings, one positioned above the other. The defining characteristic of a sesquiplane is that one of its wings has less than half the area of the other. This configuration was a variation of the biplane design that was popular in early aviation, particularly from World War I through the 1930s, due to its maneuverability. While biplanes were eventually surpassed in speed by monoplanes, sesquiplanes and other biplane designs found continued use in specialized roles like crop dusting and aerobatic flying.12

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biplane
…the lower) is called a sesquiplane. A few triplane designs proved successful during World War I; powered aircraft with four or more main lifting surfaces have never been more than curiosities.
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…the lower) is called a sesquiplane. A few triplane designs proved successful during World War I; powered aircraft with four or more main lifting surfaces have never been more than curiosities.
Read More