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The Caproni Ca.18 was a military reconnaissance aircraft built in Italy shortly prior to World War I. It became the first Italian-designed and -built aircraft to see service with the Italian armed forces. The Ca.18 was a monoplane of conventional configuration and fixed tailskid undercarriage. The wings were mounted to the fuselage with a bayonet fitting, to facilitate the rapid erection and dismantling of the aircraft.
The Chasle YC-12 Tourbillon ("Whirlwind") was a single-seat light sporting aircraft developed in France in the mid-1960s and marketed for homebuilding via plans. It was a low-wing cantilever monoplane of conventional configuration. As designed, it featured fixed tailwheel undercarriage, but it could also be fitted with fixed tricycle gear.
The DSK Airmotive DSK-1 Hawk was an unusual homebuilt aircraft designed in the United States in the early 1970s. While the design itself was utterly conventional - a single-seat low-wing cantilever monoplane with fixed tricycle undercarriage - its method of construction was not, since the DSK-1 Hawk used a surplus 200 US Gal military drop tank as its fuselage. Designer Richard Killingsworth sold over 250 sets of plans.
The Koolhoven F.K.50 was a 1930s Dutch eight-passenger light transport monoplane designed and built by Koolhoven.
The Focke-Wulf S 2 was a trainer aircraft built in Germany in the late 1920s. It was a conventional parasol-wing monoplane with fixed tailskid undercarriage. The pilot and instructor sat side by side in an open cockpit. Only a single example was built.
The Fokker S.IV was a military trainer aircraft produced in the Netherlands in the mid-1920s. It was a conventional, single-bay biplane with staggered wings of unequal span braced with N-struts, essentially a radial-engined development of the S.III. The pilot and instructor sat in tandem, open cockpits and the undercarriage was of fixed, tailskid type with a cross-axle between the main units. The Royal Netherlands Army Aviation Group purchased 30 examples and used them right up to the German invasion of the Netherlands in 1940. On 14 May that year, a few surviving S.IVs escaped to France alongside some S.IX trainers, but never flew again.
The Hispano HS-42 and its derivative, the HA-43, were advanced military trainer aircraft produced in Spain in the 1940s. The basic design was that of a conventional, low-wing, cantilever monoplane with seating for the pilot and instructor in tandem. The HS-42 had fixed, tailwheel undercarriage with spatted mainwheels, while the HA-43 had retractable main units. Produced on the assembly line that had been used to build Fokker D.XXI fighters, the HS-42 shared some components with this aircraft.
The Hopfner HS-5/28 was a utility aircraft built in Austria in the late 1920s. It was a conventional, parasol-wing monoplane with seating for two occupants in tandem, open cockpits. The landing gear was of fixed, tailskid type with divided main units. Two examples were built with Walter NZ60 engines, followed by two more with the more powerful NZ85 for Swiss aeroclub use. One of these latter machines remained in service until 1934.
The Hopfner HS-8/29 was a utility aircraft built in Austria in the late 1920s based on the Hopfner HS-5/28. It used a modernised version of its predecessor's airframe, being a conventional, parasol-wing monoplane with seating for two occupants in tandem, open cockpits. The landing gear was of fixed, tailskid type with divided main units. The first prototype used the same Walter NZ85 engine that the later HS-5/28s had used, but this was followed by 14 production examples with Siemens engines, and a single prototype with a de Havilland Gipsy III.
The Nord 1601 was a French aerodynamic research aircraft designed and built by Nord Aviation. The aircraft was designed to investigate the aerodynamics of swept wings and related high-lift devices.
The IAR-824 was a utility aircraft built in Romania in the 1970s.
The Luscombe 10 was a single-seat sport aircraft built in the United States in 1945. It was a conventional, low-wing cantilever monoplane with fixed, tailwheel landing gear, designed for aerobatics. The wings, tail unit, and engine section were all adapted from the Luscombe 8, while the fuselage center section was an all-new design, relocating the Model 8's wings from a high to low position.
The PIK-11 Tumppu ("Mitten") was a single-seat, single-engine sport aircraft developed in Finland in the 1950s. It was a low-wing, cantilever monoplane of conventional design with an enclosed cockpit and fixed, tailwheel undercarriage. It was to be the first powered aircraft produced by Polyteknikkojen Ilmailukerho, with the objective being building an aircraft for club use that was cheap to build and easy to fly.
The Pottier P.50 Bouvreuil ("Bullfinch") was a single-seat, single-engine racing aircraft developed in France in the late 1970s and marketed for homebuilding. It was a low-wing cantilever monoplane of conventional design with an enclosed cockpit. The undercarriage was of tailwheel configuration, and the P.50 was designed from the outset to offer the builder the alternative of fixed or retractable main units. Construction throughout was of wood, except for the engine cowling and main wheel spats, which were fibreglass mouldings.
The IMAM Ro.5 was a sport aircraft produced in Italy in the late 1920s. It was a conventional, parasol wing monoplane with fixed tailskid undercarriage and two open cockpits in tandem. It proved popular with private owners and flying clubs, and was built in large numbers. Some Ro.5s were purchased by the Regia Aeronautica for use as trainers and liaison aircraft. A later version, the Ro.5bis, enclosed the cockpits under a long canopy.
The SABCA S.2 was an airliner built in Belgium in 1926. It was a conventional, high-wing cantilever monoplane with fixed, tailskid undercarriage. The flight deck was open, but the passenger cabin was fully enclosed. Power was provided by a single engine in the nose, driving a two-blade propeller, and whose exhaust was collected in a single stack that extended up over the wing. Metal was construction throughout, with corrugated skin. Only a single example was built, which served with SABENA.
The SECAT S-5 was a light, high-wing, two-seat touring monoplane aircraft, designed and built by the Société d'Etudes et de Construction d'Avions de Tourisme in France shortly after the end of World War II. Only one example of the type was ever built, and it flew for a variety of private owners for several decades.
The Thaden T-4 Argonaut was a 1930s American four-seat all-metal cabin monoplane built by the Thaden Metal Aircraft Company of San Francisco, California.
The SECAT RG-60 was a prototype light sporting biplane built in France shortly after World War II. It was a conventional single-seat design with an open cockpit. The lower wing had a smaller span and chord than the upper wing and was braced against the upper wing and against the fuselage sides with I-struts but no wires. The undercarriage consisted of two fixed, divided main units plus a fixed tailskid. Power was supplied by a tractor-mounted piston engine that drove a two-bladed propeller. Construction was of wood throughout.
The SNCASO SO.3050 was designed and built in France towards the end of World War II. Only one was completed and that was soon abandoned.
References
- Bridgeman, Leonard (1948). Jane's All the World's Aircraft 1948. London: Sampson Low Marston. pp. 153c.
- Gaillard, Pierre (2002). "Les avions de la SECAT". Les Cahiers du RSA. Paris: Le Réseau du Sport de l'Air (239): 40–41.
- The Illustrated Encyclopedia of Aircraft. London: Aerospace Publishing. p. 2839.
- Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 797.