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The Tupolev I-12 was a prototype Soviet fighter aircraft that never reached production. The I-12 was of unconventional design with twin booms made of water pipes containing recoilless rifles and two engines in a push-pull configuration. The aircraft first flew in 1931 but did not enter production due to disappointing performance and operational difficulties such as the inability for the pilot to escape the aircraft without hitting the propeller arc behind him. The second prototype from Tupolev was never completed.
The Friedrichshafen FF.60 was a German experimental floatplane produced by Flugzeugbau Friedrichshafen.
The Gourdou-Leseurre GL-832 HY was a 1930s French light shipboard reconnaissance floatplane design and built by Gourdou-Leseurre for the French Navy.
The Farman F.51 was a 1920s French maritime reconnaissance flying boat designed and built by Farman. The F.51 was an unequal-span four-bay biplane flying boat with a crew of four. It was powered by two Lorraine 8bd engines mounted in tractor configuration. A pusher engined version was designated the Farman F.50 . Tested by the French Navy but it failed to win any orders, Farman did briefly consider a civil version but the project was abandoned.
The Savoia-Marchetti S.66 was a 1930s Italian twin-hull flying boat designed and built by Savoia-Marchetti as an enlarged development of the S.55.
The Grigorovich M-11 was a Russian single-seat fighter flying boat designed by Dmitry Pavlovich Grigorovich and built by Shchetinin
The Tupolev MTB-2, also known as the ANT-44, was a four-engine prototype flying boat designed in the Soviet Union in 1935.
Grigorovich TB-5 was an experimental heavy bomber designed and tested in the Soviet Union in the early 1930s. Designed as a competitor for TB-3, TB-5 was intended to be powered by two FED 24-cylinder X engines of 746 kW (1,000 hp) each. When these were canceled, the underwing pods were revised to each house a pair of Bristol Jupiter engines in a push-pull configuration. Despite projected performance inferior to TB-3, it was hoped that TB-5 would gain an advantage by using less metal thanks to its mixed construction of fabric-covered metal frame.
The Canadian Vickers Velos was a 1927 Canadian twin-engined float-equipped sesquiplane designed and built by Canadian Vickers Limited. Designed for survey work, it proved difficult to fly and only one was built.
The Beriev MDR-5 (sometimes Beriev MS-5) was a Soviet long-range reconnaissance/bomber flying boat developed by the Beriev design bureau at Taganrog. It did not enter production as the rival Chyetverikov MDR-6 was preferred.
The Caspar U.1 was a 1920s German patrol seaplane designed by Ernst Heinkel and built by Caspar-Werke. The U.1 was designed to fit into a cylindrical container to allow it to be carried, then launched from a submarine.
The Farman F.270 was a prototype French bomber/torpedo-bomber designed and built by the Farman Aviation Works for the French Air Force.
The Yakovlev AIR-1 (VVA-3) was a 1920s Soviet two-seat light biplane, the first aircraft designed and built by Aleksandr Sergeyevich Yakovlev.
The Hansa-Brandenburg W.20 was a German submarine-launched reconnaissance flying boat of the World War I era, designed and built by Hansa-Brandenburg.
The Beeson MB.26 was a French sesquiplane floatplane designed by Marcel Besson as a shipborne two-seat reconnaissance aircraft for the French Navy, but it was not ordered into production.
The Blériot 290 was a 1930s French sesquiplane flying-boat designed by Filippo Zappata, only one was built and it was not ordered into production.
The CAMS 38 was a French single-seat racing flying-boat designed by Rafaele Conflenti and built by Chantiers Aéro-Maritimes de la Seine (CAMS) for the 1923 Schneider Trophy race. The CAMS 38 was withdrawn from the race during the second lap.
The Shavrov Sh-7 was a Soviet civil transport amphibious aircraft designed by Vadim Shavrov. Although it was ordered into production for Aeroflot, the start of the Great Patriotic War resulted in only a single prototype being built.
The Curtiss CA-1 was an American five-seat biplane amphibian designed by Frank Courtney and built by Curtiss-Wright at St Louis, Missouri.
The Shavrov Sh-5 was a Soviet civil amphibian flying-boat designed by Vadim Borisovich Shavrov as a photographic platform for aerial mapping. By the time it flew it was an outdated design and the type did not enter production.
References
Notes
Bibliography
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.
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