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.
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| - Fokker S.IV (en)
- Fokker S.IV (it)
- Fokker S.IV (nl)
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| - Il Fokker S.IV era un aereo da addestramento sviluppato dall'azienda aeronautica olandese Fokker nella prima metà degli anni venti del XX secolo, e prodotto in serie. (it)
- 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. (en)
- De Fokker S.IV was een eenmotorig lesvliegtuig met twee zitplaatsen en propelleraandrijving. Deze dubbeldekker was initieel voorzien van een 125 pk Le Rhone Oberursel-rotatiemotor. In dit toestel zaten de leerling en de instructeur achter elkaar. In 1924 werden door de Luchtvaartafdeeling dertig exemplaren van dit toestel besteld. Vanaf dat moment heeft het jarenlang (tot en met 1940) dienstgedaan als standaard lesvliegtuig. Begin jaren 30 werd de S.IV voorzien van de krachtigere Armstrong Siddeley Mongoose-stermotor van 150 pk. (nl)
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| - Jane's all the World's Aircraft 1928 (en)
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| - 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 S.IV could be powered by a variety of engines in the 75–97 kW (100–130 hp) range, including 110 hp (82 kW) Siemens-Halske Sh 11, 110 hp (82 kW) Le Rhône 9J, 130 hp (97 kW) Bristol Lucifer, 130 hp (97 kW) Armstrong-Siddeley Mongoose, 110 hp (82 kW) Oberursel UR.II or the 130 hp (97 kW) Clerget 9B. (en)
- Il Fokker S.IV era un aereo da addestramento sviluppato dall'azienda aeronautica olandese Fokker nella prima metà degli anni venti del XX secolo, e prodotto in serie. (it)
- De Fokker S.IV was een eenmotorig lesvliegtuig met twee zitplaatsen en propelleraandrijving. Deze dubbeldekker was initieel voorzien van een 125 pk Le Rhone Oberursel-rotatiemotor. In dit toestel zaten de leerling en de instructeur achter elkaar. In 1924 werden door de Luchtvaartafdeeling dertig exemplaren van dit toestel besteld. Vanaf dat moment heeft het jarenlang (tot en met 1940) dienstgedaan als standaard lesvliegtuig. Begin jaren 30 werd de S.IV voorzien van de krachtigere Armstrong Siddeley Mongoose-stermotor van 150 pk. Na de Duitse aanval op Nederland in 1940 week een aantal S.IV- en S.IX-toestellen uit naar Frankrijk. Het is onduidelijk wat er daarna met deze vliegtuigen gebeurd is. (nl)
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