The Arado Ar 80 was a pre-World War II fighter aircraft, designed by Arado Flugzeugwerke to compete for the Luftwaffe's first major fighter contract. The Ar 80 was uninspiring in terms of performance and also suffered a number of failures. The contest was eventually won by the Messerschmitt Bf 109, and the Ar 80 prototypes ended their days as test aircraft.
The Arado Ar 68 was a German single-seat biplane fighter developed in the mid-1930s. It was among the first fighters produced when Germany abandoned the restrictions of the Treaty of Versailles and began rearming.
The Fieseler Fi 5 was a single-engined two-seat sportplane of the 1930s. It was produced by the German aircraft manufacturer Fieseler Flugzeugbau, which was started by the World War I fighter ace and German aerobatic star, Gerhard Fieseler.
Alexander Lippisch's Delta IV was a continuation of his work on delta wing designs pioneered in his Delta I, Delta II and Delta III aircraft.
The Dornier Do 11 was a German heavy bomber, developed in secret in the early 1930s. It was originally called the Dornier F before being renamed by the Reichsluftfahrtministerium (RLM) in 1933, and was considered a heavy bomber at the time. It came into service in 1932, a continuation of a line of bomber designs from the Dornier Do P in 1930, and the Dornier Do Y in 1931. The line would continue to develop with the Dornier Do 13 and Dornier Do 23.
The Henschel Hs 127 was a German bomber that was built as two prototypes, but cancelled without entering mass production.
The Hamburger Flugzeugbau Ha 137 was a German ground-attack aircraft of the 1930s. It was Blohm & Voss' entry into the contest to equip the re-forming Luftwaffe with its first purpose-built dive bomber. Although the contest would eventually be won by the Junkers Ju 87, the Ha 137 demonstrated that B&V's Hamburger Flugzeugbau, not even two years old at this point, had a truly capable design team of its own. One Ha 137 single-seat prototype competed against the Henschel Hs 123 at Rechlin.
The Messerschmitt Bf 162 was a light bomber aircraft designed in Germany prior to World War II, which flew only in prototype form.
The Focke-Wulf Fw 57 was a prototype German fighter-bomber. Prototypes were built in 1936 but never entered production.
The Fieseler Fi 157 was an unsuccessful attempt at developing a radio-controlled, full-sized anti-aircraft target.
The Focke-Wulf Fw 56 Stösser was a single-engine, parasol monoplane advanced trainer, built in the 1930s in Germany.
The Arado Ar 76 was a German aircraft of the 1930s, designed as a light fighter with a secondary role as an advanced trainer in mind.
The Avia B.35 was a fighter aircraft built in Czechoslovakia shortly before World War II.
The Avia B.135 was a Czechoslovak cantilever monoplane fighter aircraft. It was the production version of the Avia B.35 developed shortly before the war, based on the B.35/3 prototype but featuring a new all-metal wing.
The Avia BH-19 was a fighter aircraft built in Czechoslovakia in 1924. It was a low-wing braced monoplane derived from the Avia BH-3 and reflected its designers' ongoing belief that the monoplane configuration was the most suitable for a fighter aircraft. Initial trials revealed excellent performance, but also displayed control problems and aileron flutter. Nevertheless, the Czechoslovakian Army was sufficiently impressed to inform Avia that it would order the BH-19 if the problems could be rectified. The first prototype was destroyed in a crash during speed trials, and the second prototype revealed no better handling than its predecessor. At this point, the Czechoslovakian War Ministry stepped in and asked Avia to cease its attempts to develop a monoplane fighter.
The Arado Ar 79 was a German aircraft of the 1930s, designed as an aerobatic two-seat trainer and touring aircraft.
The Siebel Si 201 was a German air observation post and army cooperation aircraft, designed and built by Siebel. Evaluated against other types, the Si 201 did not enter production and only two prototypes were built.
The Focke-Wulf Fw 62 was a reconnaissance floatplane, designed and built by Focke-Wulf for use by Nazi Germany's Kriegsmarine. Only four were built.
The Henschel Hs 125 was a German advanced training aircraft prototype featuring a single engine and low wing, designed by Henschel & Son and tested by the Luftwaffe in 1934. Only two prototypes were ever built.
The Albatros L102 / Albatros Al 102, was a German trainer aircraft of the 1930s. It was a parasol-wing landplane, seating the student pilot and instructor in separate, open cockpits. A biplane floatplane version was also built as the Al 102W, with strut-braced lower wings.
