The Caproni Ca.4 was an Italian heavy bomber of the World War I era.
The Ilyushin Il-30 was a Soviet turbojet-powered tactical bomber designed as a higher-performance, swept wing version of the Ilyushin Il-28, in the late 1940s. Its thin wing and engine nacelles necessitated the use of tandem landing gear, the first Soviet aircraft to do so. It was apparently canceled before the prototype made its first flight, although sources disagree with this.
The Kawanishi H3K, also known as Navy Type 90-2 Flying Boat (九〇式二号飛行艇), was a Japanese biplane military flying boat from the interwar period. The H3K was a development of the Short S.8/8 Rangoon. The first of the H3Ks was built by Short Brothers and the remaining four by Kawanishi in Japan.
The Curtiss CS was a reconnaissance and torpedo bomber aircraft used by the United States Navy during the 1920s. It was a large single-engine biplane with single-bay unstaggered wings, the design conventional in all respects other than that the lower wing was of greater span than the upper. The CS was built to allow its undercarriage to be quickly and easily interchangeable between wheeled, tailskid undercarriage, and twin pontoons for operation from water. Provision for the carriage of a torpedo was semi-recessed into the underside of the fuselage, blended in behind an aerodynamic fairing. The pilot and gunner sat in tandem open cockpits, while accommodation inside the fuselage was provided for a third crewmember who served as bombardier and radio operator. This station was also provided with a dorsal hatch aft of the gunner's position, and a ventral blister aft of the torpedo recess, which was used for aiming bombs or torpedoes.
The Gotha WD.27 was a long-range maritime patrol floatplane developed during World War I by Gothaer Waggonfabrik (Gotha) for the Imperial German Navy's Naval Air Service. It was a large, four-engine aircraft with the same general layout as the WD.22; a conventional floatplane with engines grouped in tractor-pusher pairs on the lower wings. Three aircraft were ordered in early 1918, but the first prototype was not completed until after the end of the war in November. It may not have flown before it was ordered to be destroyed by the victorious Allies.
The Macchi M.8 was an Italian reconnaissance/bomber flying boat designed by Alessandro Tonini and built by Macchi. It was used by the Italian Naval Aviation and was later flown by crews from the United States Navy.
The Ilyushin Il-46 was a jet-engined bomber produced in the USSR during 1951-2, as the result of a directive to redesign the Il-42 project. The revised specification was for an aircraft with twice the range and 1 1/2 times the bomb load, with a prototype ready to be submitted for state acceptance trials in July 1952. The Ilyushin design bureau set about designing two versions of the same aircraft, the straight-wing (Il-46) and the swept-wing (Il-46S), with as much as possible common to both aircraft. To meet the schedule for state acceptance trials Ilyushin built only the straight-wing version, fearing that the design, manufacture and flying characteristics of the swept-wing aircraft might cause delays.
The Rumpler G.I was a bomber aircraft produced in Germany during World War I, together with refined versions known as the G.II and G.III.
The Bristol Type 6 T.T.A was a British two-seat, twin-engine biplane, designed in 1915 as a defence fighter. Two prototypes were built, but the T.T.A. did not go into production.
The Armstrong Whitworth F.K.5 and F.K.6 were experimental triplanes built as escort fighters by Armstrong Whitworth during the First World War. They carried two gunners in nacelles mounted on the centre wing. One example of each type was built, with no further development or production following.
The Vickers F.B.11 was a prototype British three-seat escort fighter of the First World War. A large single-engined biplane, it carried one gunner in a nacelle mounted on the upper wing to give an allround field of fire. Only a single example was completed.
The Sopwith Long Range Tractor Triplane (L.R.T.Tr) was a prototype British long-range three-seat triplane escort fighter of the First World War. Its unusual layout had a small gunner's nacelle mounted on the upper wing for an all-round field of fire. Only a single example was built, as other, smaller fighters proved more practicable.
The Parnall Possum was an experimental triplane with a single, central engine driving wing-mounted propellers via shafts and gears. Two of these British aircraft were built in the mid-1920s.
The Curtiss C-1 Canada was a twin-engined bomber aircraft of the First World War which was designed by Curtiss of America to be built by their Canadian subsidiary for the British Royal Naval Air Service and Royal Flying Corps. Although large orders were placed, only twelve were built, the type being rejected in favour of more capable aircraft such as the Handley Page O/100.
The Zeppelin-Lindau Rs.II was a biplane flying boat, designed by Claudius Dornier as a follow-on to his Zeppelin-Lindau Rs.I and built during 1914–1915 on the German side of Lake Constance. Initially this aircraft was powered by three engines mounted inside the hull driving three pusher propellers via gearboxes and shafts. The later version was powered by four engines in two push-pull nacelles mounted between the wings.
The Zeppelin-Lindau Rs.III was a large four-engined monoplane flying boat designed by Claudius Dornier and built during 1917 on the German side of Lake Constance at the Zeppelin-Lindau works.
The Mitsubishi J4M Senden or Navy Experimental 17-Shi Otsu B Type Interceptor Fighter Senden, Allied reporting name Luke, was a Japanese World War II fighter aircraft proposed by Mitsubishi Heavy Industries for use by the Imperial Japanese Navy. The J4M project did not proceed beyond the design stage.
The Daimler G.I, originally designated Daimler R.I, was a bomber aircraft designed and built in Germany from early in 1915.
The Loening XS2L was an American biplane scout amphibian developed by Keystone-Loening, for the United States Navy during the early 1930s.
The Caproni Ca.66 and Caproni Ca.67 were Italian night bomber aircraft designed to re-equip the post-World War I Regia Aeronautica.
