Rogozarski R-313

Role: multi-purpose combat aircraft
National origin: Yugoslavia
Manufacturer: Prva Srpska Fabrika Aeroplana Zivojin Rogozarski, Belgrade
Designer: Sima Milutinović
First flight: 1940
Retired: 1942
Status: inactive
Primary user: Yugoslav Royal Air Force
Number built: 1

The Rogozarski R-313 was a two-seat twin-engined monoplane designed as a fighter/light bomber/reconnaissance aircraft in Yugoslavia before World War II. It was designed and built at the Rogozarski factory in Belgrade.

Design, construction and development

The Rogozarski R-313 was a two-seater twin-engined fighter/light bomber/recconnaisance aircraft. It was powered by two in-line Walter Sagitta IIR engines, both fitted with a compressor; each was capable of 493 hp. The elliptical, wooden fuselage was covered in plywood which was also used to 'skin' the round-tipped, trapezoidal wings. The engine nacelles also housed the landing gear. The tail-wheel was, like the main landing gear, retractable. The fuel tank was located in the centre section between the wings. The reconnaissance variant of this aircraft was due to be equipped with a camera, a radio, a fixed 20mm cannon and a single FN 7.9mm machine gun, flexibly mounted. As a light bomber, the plane would carry four 106 kg 'Stankovic' bombs inside the fuselage.

Operational history

This aircraft did not get beyond the prototype stage. However, such characteristics as speed, rate of climb and distance required for take-off compared favourably with contemporary fighters.Only the relative lack of engine power let it down. Adopting the more powerful Daimler Benz DB 601 or the Rolls Royce "Merlin" was discussed but came to nothing with the outbreak of war. A total of 25 aircraft were planned, both recconnaisance and light bomber versions.

The prototype became part of 603 training squadron which was located at Grab, near Trebinje during the April war. It was damaged and abandoned attempting to take-off from Grab on 12 April 1941. A month later, the Germans took control and sold the machine to the Croats who had taken over the 'Ikarus' factory. They renamed the aircraft "Независни" ("Independent"); after repairs, a test flight was carried out on 19 May 1942.

Sabotage was then detected, so serious that further repairs could not be carried out. Thus ended the plane which was popular in literature as the "Yugoslav moskito" Although it was designed and built long before its legendary counterpart.

Operators

Kingdom of Yugoslavia

Royal Yugoslav Air Force 1 aircraft

Croatia

Air Force of the Independent State of Croatia 1 ex-Royal Yugoslav Air Force

Specifications

General characteristics

Crew: 2
Length: 11.00 m (36 ft 1 in)
Wingspan: 13.00 m (42 ft 8 in)
Height: 2.68 m (8 ft 10 in)
Wing area: 26.40 m (284.2 sq ft)
Empty weight: 2,950 kg (6,504 lb)
Gross weight: 4,270 kg (9,414 lb)
Powerplant: 2 x� Walter Sagit, , 368 kW (493 hp) each
Propellers: 3-bladed

Performance

Maximum speed: 376 km/h (234 mph; 203 kn) 450 at sea level
Range: 1,000 km (621 mi; 540 nmi)
Service ceiling: 8,000 m (26,247 ft)
Rate of climb: 8.33 m/s (1,640 ft/min)

Armament

Yugoslav Royal Air Force
Walter Aircraft Engines
Rogozarski SIM-XIV-H
Rogozarski PVT

Grey, C.G. (1972). Jane's All the World's Aircraft 1938. London: David & Charles. ISBN 0-7153-5734-4.
Gunston, Bill (1989). World Encyclopaedia of Aero Engines (2 ed.). Wellingborough: Patrick Stephens Ltd. ISBN 1-85260-163-9.

Rogozarski R-313 Pictures

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Source: WikiPedia