The Focke-Wulf Fw 187 Falke ("Falcon") was a German aircraft developed in the late 1930s. It was conceived by Kurt Tank as a twin-engine, high-performance fighter, but the Luftwaffe saw no role for the design, perceiving it as intermediate between the Messerschmitt Bf 109 and Bf 110. Later prototypes were adapted to two-seats to compete with the Bf 110 in the Zerstörer role, but only nine aircraft were built in total.
The Heinkel He 177 Greif (Griffin) was a long-range heavy bomber flown by the Luftwaffe during World War II. The introduction of the He 177 to combat operations was significantly delayed, by both problems with the development of its engines, and frequent changes to its intended role. Nevertheless, it was the only long-range, heavy bomber to become operational with the Luftwaffe during the war. The He 177 had a payload/range capability similar to that of four-engined heavy bombers by the Allies in the European theatre; it also had higher cruising and maximum speeds than its Allied counterparts.
The Caproni Ca.4 was an Italian heavy bomber of the World War I era.
Between 1911 and 1914, the Royal Aircraft Factory used the F.E.2 designation for three quite different aircraft that shared only a common "Farman" pusher biplane layout.
The Republic XF-12 Rainbow was an American four-engine, all-metal prototype reconnaissance aircraft designed by the Republic Aviation Company in the late 1940s. Like most large aircraft of the era, it used radial engines—in this case, the Pratt & Whitney R-4360 Wasp Major. The aircraft was designed with maximum aerodynamic efficiency in mind. The XF-12 was referred to as an aircraft that was "flying on all fours" meaning: four engines, 400 mph cruise, 4,000 mile range, at 40,000 feet. It is still the fastest piston-engined airplane of this size, exceeding by some 50 mph the Boeing XB-39 of 1944. Although highly innovative, the postwar XF-12 Rainbow had to compete against more modern jet engine technology, and did not enter production.
The Focke-Wulf Fw 191 was a prototype German bomber of World War II, as the Focke-Wulf firm's entry for the Bomber B advanced medium bomber design competition. Two versions were intended to be produced, a twin-engine version using the Junkers Jumo 222 engine and a four-engine variant which was to have used the smaller Daimler-Benz DB 605 engine. The project was eventually abandoned due to technical difficulties with the engines.
The Zeppelin-Staaken R.VI was a four-engined German biplane strategic bomber of World War I, and the only Riesenflugzeug design built in any quantity.
A Riesenflugzeug, sometimes colloquially referred to in English as an R-plane, was any member of a class of large World War I German bombers, possessing at least three aircraft engines, although usually four or more engines. These were large multi-engine aircraft capable of flying several hours with larger bomb loads than the smaller Grossflugzeug bombers such as the Gotha G.V.
The Gotha G.II series was a heavy bomber used by the Luftstreitkräfte during World War I.
The DFW C.IV, DFW C.V, DFW C.VI, and DFW F37 were a family of German reconnaissance aircraft first used in 1916 in World War I. They were conventionally configured biplanes with unequal-span unstaggered wings and seating for the pilot and observer in tandem, open cockpits. Like the DFW C.II before them, these aircraft seated the gunner to the rear and armed him with a machine gun on a ring mount. Compared to preceding B- and C-class designs by DFW, however, the aerodynamics of the fuselage were more refined, and when coupled with more powerful engines, resulted in a machine with excellent performance.
The DFW R.I,, was a prototype German bomber aircraft of World War I.
The DFW R.II was a German bomber aircraft of World War I. It was developed at a request by the Luftstreitkräfte in spring 1917 after their experience with the R.I had been generally positive, but only two were ever built despite six being ordered.
The Ikarus 451 is a family of research aircraft designs built in Yugoslavia in the 1950s, all sharing the same basic airframe, but differing in powerplants and cockpit arrangements. One member of the family Ikarus 451M became the first domestically-built jet aircraft to fly in Yugoslavia, on 25 October 1952.
The Vickers F.B.12 was a biplane pusher fighter aircraft developed during World War I by Vickers Limited. The failure of the engine for which it was designed, and the obsolescence of the pusher configuration, resulted in its remaining an experimental type only.
The Siemens-Schuckert R.VIII was a bomber aircraft designed and built in Germany from 1916.
The Albatros C.II was a 1910s German military pusher reconnaissance biplane designed and built by Albatros Flugzeugwerke. Only one aircraft was built and the type did not enter production.
The Zeppelin-Staaken R.XVI(Av) was a very large bomber (Riesenflugzeug), designed and built in Germany during 1918.
The Zeppelin-Staaken Riesenflugzeuge were a series of very large bomber aircraft - Riesenflugzeuge, usually powered by four or more engines, designed and built in Germany from 1915 to 1919.
The Siemens-Schuckert L.I was a large, three-engined biplane bomber aircraft, built in Germany towards the end of World War I. It was a twin boom design, strongly influenced by the successful Caproni Ca.3. Three were built but not used operationally.
The Zeppelin-Lindau Rs.IV was a Riesenflugzeug monoplane all metal flying boat with a stressed skin hull an fuselage developed for the Imperial German Navy to perform long range patrols over the North Sea. It had been developed by Claudius Dornier while working for Zeppelin in the town of Lindau.
