The Amiot 143 was a 1930s French 5-seat Multiplace de Combat (M.5) designed to meet 1928 specifications for a monoplane capable of day and night bombing, long-range reconnaissance and bomber escort.
The Henschel Hs 127 was a German bomber that was built as two prototypes, but cancelled without entering mass production.
The Boeing XB-39 Superfortress was a United States prototype bomber aircraft, a single example of the B-29 Superfortress converted to fly with alternative powerplants. It was intended to demonstrate that the B-29 could still be put into service even if the first choice of engine, the air-cooled Wright R-3350 radial engine, ran into development or production difficulties.
The Kyūshū Q1WTōkai was a land-based anti-submarine patrol bomber aircraft developed for the Imperial Japanese Navy in World War II. The Allied reporting name was Lorna. Although similar in appearance to the German Junkers Ju 88 medium bomber, the Q1W was a much smaller aircraft with significantly different design details.
The Dornier Do 19 was a German four-engine heavy bomber that first flew on 28 October 1936. Only one prototype flew, and it was converted to a transport in 1938. The other two were scrapped.
The Savoia-Marchetti SM.81 Pipistrello was the first three-engine bomber/transport aircraft serving in the Italian Regia Aeronautica. When it appeared in 1935, it represented a real step ahead in Italian military aviation: it was fast, well armed and had a long range. It proved effective during the war with Ethiopia and the Spanish Civil War. Despite being too slow to remain competitive as a bomber in the later years of World War II, it was one of the most flexible, reliable and important aircraft of the Regia Aeronautica from 1935 to 1944, and adapted to second-line duties in a wide range of tasks.
The Mitsubishi Ki-20 is a Japanese bomber variant of the Junkers G.38 airliner. Mitsubishi manufactured six aircraft under license from Junkers. These aircraft, designated Army Type 92 Heavy Bomber, served through the 1930s. During World War II, the Ki-20 served in a variety of transport and support roles.
PZL.46 Sum (sheatfish) was a light bomber of the Polish Air Force before World War II, which, was directed to serial production in the spring of 1939. These planes were in production, but the Polish industry did not manage to produce them before the outbreak of the war.
The Heinkel He 45 was a light bomber produced in Germany in the early 1930s, one of the first aircraft adopted by the newly formed Luftwaffe. Its appearance was that of a conventional biplane and included seating for pilot and gunner in tandem, open cockpits. Developed in parallel with the He 46, it appeared in 1931 as a general-purpose biplane and was employed mainly as a trainer, but was also used by the Luftwaffe for reconnaissance and light bombing duties. Production of this plane totalled 512 aircraft, including those built under licence by Gotha, Focke-Wulf, and BFW.
The PZL.48 Lampart (leopard) was a Polish heavy fighter-bomber design, that remained only a project, owing to the outbreak of World War II.
The Fairchild AT-21 was an American World War II specialized bomber crew trainer, intended to train crews in the use of power gun turrets or a gun on a flexible mount, as well as learn to function as a member of a crew. It had a brief career as a training aircraft before modified bombers took over this role.
The Boeing TB was an American torpedo bomber biplane designed by the US Navy and built by Boeing in 1927.
The Heinkel HE 5, produced in Sweden as the Svenska S 5 and nicknamed the "Hansa", was a reconnaissance floatplane built during the 1920s. It was a further development of the HE 1, sharing its same basic configuration as a low-wing, strut-braced monoplane. The HE designation also refers to the monoplane construction, standing for Heinkel Eindecker.
The Junkers CL.I was a ground-attack aircraft developed in Germany during World War I. Its construction was undertaken by Junkers under the designation J 8 as proof of Hugo Junkers' belief in the monoplane, after his firm had been required by the Idflieg to submit a biplane as its entry in a competition to select a ground-attack aircraft.
The Junkers S 36 was a twin-engine mail plane developed in Germany in the late 1920s that was further developed in Sweden as a multi-role military aircraft, albeit unsuccessfully, under the designation K 37. The design itself was a low-wing cantilever monoplane of largely conventional design, featuring twin tails and fixed, tailwheel undercarriage. Construction was metal throughout and skinned, in typical Junkers fashion, with corrugated duralumin. The engines were mounted in nacelles on the wings, and the crew was accommodated in three open cockpits, including one in the very nose of the aircraft.
The Junkers K 47 was a two-seater fighter aircraft developed in Sweden by the Swedish subsidiary of the German firm Junkers during the late 1920s, a civil development of which was designated the A 48.
The Nakajima C3N-1 was a prototype Japanese carrier-based reconnaissance aircraft of the 1930s. A single-engine monoplane with a fixed undercarriage, although only two examples were built, they were both used operationally, carrying out land-based reconnaissance missions during the Second Sino-Japanese War.
The Arado Ar 81 was a German prototype dive bomber. Because the Reich Air Ministry decided to purchase the competing Junkers Ju 87, only three prototypes of the Ar 81 were completed.
The Polikarpov NB was a Soviet twin-engined bomber designed during World War II. Only a single prototype had been built before the program was terminated upon the death of Nikolai Nikolaevich Polikarpov, the head of the aircraft's design bureau, in 1944.
The Dewoitine D.750 was a prototype French twin-engined torpedo bomber. It was designed prior to the outbreak of the Second World War to operate from the aircraft carriers of the French Navy, but only a single example was completed, with development ended by France's defeat by Germany in June 1940.
