sesquiplanen.
/ˈsɛskwɪpleɪn/ Now Historical.
A biplane having one wing of surface area not more than half that of the other.
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society > travel > air or space travel > a means of conveyance through the air > aeroplane > [noun] > with more than one wing either side > types of biplane
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1921 Flight 29 Sept. 650/2 The Nieuport-Delage ‘Sesquiplans’ are to all intents and purposes monoplanes, but with a small plane covering-in the wheel axle as in some of the German Fokkers.
1921 Aeroplane 5 Oct. 293/2 Why the machine is called the ‘Sesquiplan’ is even a greater mystery than the name of the ‘Bamel’.
1921 Aeroplane 19 Oct. 348/2 (heading) What is a sesquiplane?
1930 Flight 17 Jan. 115/2 Its most unusual feature was that, although a sesquiplane, its top wing was smaller in span and chord than the lower wing.
1939 C. H. L. Needham Aircraft Design I. vi. 74 The sesquiplane arrangement, in which one wing, generally the top, has roughly twice the area of the lower wing, is a compromise which enables the advantages of the biplane structure to be combined with somewhat improved aerodynamic characteristics.
1960 C. H. Gibbs-Smith Aeroplane ii. 220 The Coanda sesquiplane of 1910. There has recently arisen some controversy about this machine... Until recently it has been accepted as an all-wood sesquiplane, with cantilever wings, powered by a 50-h.p. Clerget engine driving a ‘turbo-propulseur’ in the form of a large but simple ducted air-fan.
1981 Andrews & Morgan Supermarine Aircraft since 1914 174 The superstructure was of sesquiplane form, that is with the lower wing only one third the area of the top wing.
This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020).
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n.1921