Praga E-45
biplane fighter prototype

The Praga E-45 was a single-engined, single-seat biplane fighter built in Czechoslovakia in the mid-1930s. It appeared a little too late to compete with the similar Avia B-534 and failed to get a production order.
Design and development
The Praga E-45 single-seat fighter was designed to compete with the Avia B-534, but flew some 17 months later. Since the two aircraft had very similar performance and the Avia was more heavily armed, it is not surprising that the Avia won a contract for over 400 aircraft and only one E-45 was built.
The E-45 was an equal span, single bay biplane with wings of slight stagger and no sweep. They were largely of constant chord, but had marked elliptical tips. The wings were wooden with plywood covering and a final sheath of fabric, the upper wings a single piece, connected to and held above the upper fuselage by a pair of outward sloping N form struts. The lower wings were attached to stubs integral with the lower fuselage. N-form interplane struts joined the wings, which were wire braced. Aerodynamically balanced ailerons covered almost all the trailing edge of the lower wing.
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This entry incorporates text from “Praga E-45” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.