Rogozarski SIM-Х
Encyclopedia
The Rogozarski SIM-X was a 1936s Yugoslav
Yugoslavia
Yugoslavia refers to three political entities that existed successively on the western part of the Balkans during most of the 20th century....
Sports and tourist plane and the plane for the basic training of military pilots, one-engined, with two crew members. It was designed and built at the Rogožarski factory in Belgrade
Belgrade
Belgrade is the capital and largest city of Serbia. It is located at the confluence of the Sava and Danube rivers, where the Pannonian Plain meets the Balkans. According to official results of Census 2011, the city has a population of 1,639,121. It is one of the 15 largest cities in Europe...
.
Design and development
Aircraft SIM X was designed by engineer. Sima Milutinovic at the beginning of the 1936th The drawing on the positive experiences of his previous types of SIM-II and SIM-VIII. The prototype aircraft has completed factory Rogožarski from August until the end of the 1936th year. The first test flight took place on the 1936th When the plane of registration. Factory Rogožarski the aircraft registered in his name under the code YU-PDY. After a thorough factory test flight is offered on Air Force tests. It was done on the flight school in Novi SadNovi Sad
Novi Sad is the capital of the northern Serbian province of Vojvodina, and the administrative centre of the South Bačka District. The city is located in the southern part of Pannonian Plain on the Danube river....
. The Commission has made some small comments but the plane got an exceptional rating. The plane that is intended for civilian use. sport pilot training, demonstration and tourist flights. The Air Force has classified it as "a school single-plane, two-seater for the initial training in pilotage."
The plane had high monoplane (parasol) with one engine, a wooden double-flight propeller, with two crew members who were seated one behind the other. While the plane was designed for three types of engine mounting Walter NZR 120 hp, Siemens
Siemens
Siemens may refer toSiemens, a German family name carried by generations of telecommunications industrialists, including:* Werner von Siemens , inventor, founder of Siemens AG...
110 hp and Gypsy Major 120 hp in a production is incorporated radial, air-cooled engine with reduction gear Walter NZR than 120 hp, which is produced with local firm S. Vlajković from Belgrade
Belgrade
Belgrade is the capital and largest city of Serbia. It is located at the confluence of the Sava and Danube rivers, where the Pannonian Plain meets the Balkans. According to official results of Census 2011, the city has a population of 1,639,121. It is one of the 15 largest cities in Europe...
.
The plane was mostly wooden construction, the fuselage of elliptical cross-section is entirely made of wood covered with plywood, and the wings are supporting structure made of wood covered with cloth, with rounded ends. On each side, the wings are supported by a pair of inclined struts which relied on the fuselage. The fuel tank was located in the central part between the wings that is. at their junction. Landing gear was fixed, no axles, completely made of steel pipe characterized by great strength which enabled a plane landing at the very rugged terrain.
The development of aircraft SI-GIP
Due to the introduction of instrument flight training of military pilots in the 1939th The producers of all Yugoslav aircraft including Rogožarski have tried to make the school plane for this purpose. In Rogozarski have started from an idea that will be the fastest to adapt the existing airplane SIM-X for that purpose. At the same time they wanted to instead incorporate radial Walter engine 6 cylinder, in-line, air-cooled engine Gypsy Major of 132 hp at that time was very popular engine that is built into the school and holiday sports aircraft and plans to YAFYugoslav Royal Air Force
The Yugoslav Royal Air Force was formed in 1918 in the Kingdom of Serbs, Croats and Slovenes and existed until Yugoslavia's surrender to the Axis powers in 1941 following the Invasion of Yugoslavia during World War II....
was supposed to be the basic aircraft engine for the school to be used in the YAF
Yugoslav Royal Air Force
The Yugoslav Royal Air Force was formed in 1918 in the Kingdom of Serbs, Croats and Slovenes and existed until Yugoslavia's surrender to the Axis powers in 1941 following the Invasion of Yugoslavia during World War II....
. Since Rogožarski could in due course to acquire the engine borrowed it from Aeroput. So protitip completed with adequate instrumentation was submitted to the Army 1940th Whatever. to be tested by a motor built this plane was named SI-GIP. Since the plane did not meet all the requirements and expectations YAF
Yugoslav Royal Air Force
The Yugoslav Royal Air Force was formed in 1918 in the Kingdom of Serbs, Croats and Slovenes and existed until Yugoslavia's surrender to the Axis powers in 1941 following the Invasion of Yugoslavia during World War II....
command not bought SI-GIP aircraft prototype.
Operational history
The first series aircraft SIM-X of 10 copies was delivered to the YAFYugoslav Royal Air Force
The Yugoslav Royal Air Force was formed in 1918 in the Kingdom of Serbs, Croats and Slovenes and existed until Yugoslavia's surrender to the Axis powers in 1941 following the Invasion of Yugoslavia during World War II....
1937th year. Serial planes are slightly different from the prototype, mainly in appearance NACA
NACA
- Organizations :* National Advisory Committee for Aeronautics, the forerunner of the U.S. federal agency NASA* National Association for Campus Activities, an organization for programmers of university and college activities...
ring. The second series was ordered 1938th , Also in 10 copies. Initially, the aircraft used in military pilot schools as a transition aircraft from the aircraft for basic training Fizir FN powerful machines to Fizir FP-2 and PVT
PVT
PVT may refer to:*PVT , pressure, volume and temperature in an equation of state*PVT * Ltd, stands for a private limited Company in the Britain and the Commonwealth*PV/T or PV-T : Photovoltaic thermal hybrid solar collector...
, and later got the role of the school plane for the initial training of military pilots. Military service of the aircraft begins the 1937th First in flight school and later a number of these aircraft was deployed at the training squadrons. Three SIM-X aircraft as a brand new Command YAF
Yugoslav Royal Air Force
The Yugoslav Royal Air Force was formed in 1918 in the Kingdom of Serbs, Croats and Slovenes and existed until Yugoslavia's surrender to the Axis powers in 1941 following the Invasion of Yugoslavia during World War II....
is assigned Aeroclub the 1938th, which were used for training civil and sport pilots. The Aeroclub then flew five planes of this type. All SIM-X aircraft from the Aeroclub on the eve of the war, returned to military service.
The largest number of SIM-X aircraft was destroyed during the April war, the German
Germans
The Germans are a Germanic ethnic group native to Central Europe. The English term Germans has referred to the German-speaking population of the Holy Roman Empire since the Late Middle Ages....
s had captured three copies of these aircraft (one in Zemun
Zemun
Zemun is a historical town and one of the 17 municipalities which constitute the City of Belgrade, the capital of Serbia...
and two in Lazarevac
Lazarevac
Lazarevac is a town and municipality located in Serbia at 44.22° North, 20.15° East. Its name stems from name of medieval Prince Lazar Hrebeljanovic. In 2002 the town has total population of 23,551. Lazarevac is one of Belgrade's 17 municipalities....
). The Croats (ISC) have used a SIM-X aircraft until 1943. when it was destroyed by the partisans of Srem in emergency landing.
Operators
Kingdom of Yugoslavia
- Royal Yugoslav Air Force 21 aircrafts
Independent State of Croatia (ISC)
- Air Force of the Independent State of CroatiaAir Force of the Independent State of CroatiaThe Air Force of the Independent State of Croatia, the Zrakoplovstvo Nezavisne Države Hrvatske was the national air force of the Independent State of Croatia during World War II, founded under German authority in April 1941...
1 ex-Royal Yugoslav Air Force
Variants
Rogozarski SIM-X- First variant with Walter NZR engines 120 hp, 21 built (1) prototyp 1936 (10 airplane) 1937 and (10 airplane) 1938
Rogozarski SI-GIP
- Second variant with Gipsy Major engines 132 hp, 1 built (conversion) in 1940.
Rogozarski SIM-Xa
- Third variant instrumental flight aircraft with Walter NZR engines 120 hp, 1 built (conversion) in 1941.