Rogozarski R-100

Role: Advanced trainer
National origin: Yugoslavia
Manufacturer: Prva Srpska Fabrika Aeroplana Zivojin Rogozarski, Belgrade
Designer: S. Milutinović
First flight: 1938
Introduction: 1939
Retired: 1950
Status: inactive
Primary user: Yugoslav Royal Air Force
Produced: from 1937 to 1939
Number built: 26
Developed from: Rogozarski PVT

The Rogozarski R-100 (Рогожарски Р-100 in Serbian, transliterated as Rogožarski R-100 in German and as Rogojarsky Р-100 in some older English sources) was a single-engined, single-seat parasol winged aircraft designed as an advanced and fighter trainer in Yugoslavia before World War II. Over 25 were built, serving with the Yugoslav Royal Air Force until the fall of Yugoslavia in 1941. After that, 11 R-100s were used by the newly formed Croatian Air Force, sometimes as ground attack aircraft and 1 R-100 were used by Italian Air Force.

Design and development

The Prva Srpska Fabrika Aeroplana Zivojin Rogozarski A.D. was the first Serbian aircraft manufacturer in Yugoslavia, founded in 1924. In about 1938 they designed the Rogozarski R-100, a training aircraft with single open cockpit in an oval wooden monocoque fuselage, was a product of the design team of Prof. Sima Milutinović as a successor to their Rogozarski PVT trainer aircraft. Its wooden, canvas covered wings were swept and parasol mounted well above the fuselage with pairs of lift struts to the lower fuselage and a central inverted V cabane. They carried long narrow chord ailerons, with prominent spades well clear of the upper surfaces. The R-100 was powered by a 420 hp (314 kW) 7-cylinder radial IAM K-7 license built version Gnx�me-Rhx�ne 7K radial engine, housed with its cylinder heads exposed and driving a two-bladed propeller. Engine was coated NACA ring. The plane had a flight back to the carburetor and fuel tank of 158 liters. The fixed, divided type undercarriage had on each side a main shock absorber leg, its upper end attached to a steel pyramid protruding from the mid-fuselage keeping the leg closer to the vertical whilst providing a wide track. Each wheel was connected to the lower fuselage with a swinging V-strut, introduced a taol wheel. The horizontal tail and fixed fin were both canvas covered wooden structures, though the moving surfaces, also canvas covered, had metal frames.

Operational history

The PVT prototype probably first flew in 1938 a test pilot was Milo� Gagić. An initial production batch of 15 aircraft was delivered to the YRAF during 1939. The first aircrafts R-100 were immediately sent to Ni� in the Fighters school. Another 10 were delivered during 1939-40, had fixed 7.7 mm (0.303 in) Darne machine guns and photo gun (camera). These planes were designed for school shooting in Bela Crkva. Aircraft R-100 were used extensively before the war to traning pilots spare. At the time of the Italo-German invasion of Yugoslavia in April 1941, the Italians seized one plane R-100, and 11 of these planes the Germans, others were destroyed. The Germans captured planes R-100 surrendered its allies the Croats (ISC) ​​who were trained and used throughout the war. In the initial period were used for retraining and training pilots, and later fitted with mountings for a bomb of 90 or 100 kg, and were used for bombing. Several pieces of R-100 in place of a conventional fighter jet patrolled the outskirts of Zagreb, to repel the attacks of partisan aircraft. Last combat flight on this aircraft carried out on 26 April 1945. Two aircraft of this type are at the end of the war, flew over the partisan side, and two are seized at the airport Lucko near Zagreb during the liberation. All four planes that survived the war are included in the Yugoslav Army Air Force (JRV). One used in the 111th and 112 Fighting regiment, the third was used in the VTC (Aeronautic Technical Center) and the fourth was used by the commander of 4th bomber division. The JRV planes flew to the beginning of 50th -those years when they stopped being used. Parts of an R-100 are kept at the Yugoslav Aeronautical Museum at the airport "Nikola Tesla" Belgrade.

Operators

Kingdom of Yugoslavia

Royal Yugoslav Air Force 26 aircrafts

Croatia

Air Force of the Independent State of Croatia 11 ex-Royal Yugoslav Air Force

Italy

Regia Aeronautica 1 aircraft.

Specifications

General characteristics

Crew: 1
Length: 7.35 m (24 ft 1 in)
Wingspan: 10.20 m (33 ft 6 in)
Height: 3.00 m (9 ft 10 in)
Wing area: 20.56 m (221.3 sq ft)
Empty weight: 1,024 kg (2,258 lb)
Gross weight: 1,326 kg (2,923 lb)
Powerplant: 1 x� Gnx�me-Rhx�ne 7K 7-cylinder radial, 309 kW (414 hp)

Performance

Maximum speed: 260 km/h (160 mph; 140 kn) 251at sea level
Minimum control speed: 101 km/h (63 mph; 55 kn)
Range: 473 km (294 mi; 255 nmi)
Service ceiling: 7,750 m (25,427 ft)
Rate of climb: 5.42 m/s (1,067 ft/min) to 5,000 m (16,404 ft)

Armament

guns: 1 x 7,7 mm Darne
bombs: 1 x 100 kg

Yugoslav Royal Air Force
Rogozarski SIM-Х
Rogozarski PVT

Grey, C.G. (1972). Jane's All the World's Aircraft 1938. London: David & Charles. ISBN 0-7153-5734-4.

Rogozarski R-100 Pictures

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Source: WikiPedia