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Zmaj Fizir F1

The Fizir F1V served as the foundation for engineer Rudolf Fizir’s development of a series of single-engine, two-seat trainer/reconnaissance biplanes, each equipped with varying engines.

The prototype was initially flown in late November of 1925 by test pilot Vladimir Striževski.

Subsequent to the initial design, further development was undertaken with the assistance of Dušan Stankov, resulting in the construction of five additional prototypes and the delivery of 32 production machines designated Fizir F1V over the following three years.

While these were constructed at the Rogožarski factory, Zmaj produced 15 of the Fizir F1V-Wright versions and 5 Jupiter-engined Fizir F1M floatplanes for Naval Aviation in 1930.

Zmaj was also responsible for the conversion of several Fizir-Maybach trainers to Lorraine-Dietrich engines in 1932, which extended the service life of these machines under the new name Fizir-Lorraine 400 hp.

The Fizir F1V aircraft was utilized at flying schools to facilitate the transition of pupils to reconnaissance and bomber aircraft, replacing the Hansa-Brandenburg C.I as production permitted.

By the end of 1928, twenty examples had been produced, with an additional twelve produced in 1929.

The Fizir F1V aircraft employed by pilot schools were subsequently retired from service and replaced with the new Zmaj Fizir FP-2 in 1936.

Despite this, some examples of these aircraft remained in use as liaison aircraft or for training purposes at the onset of war in 1941.

The final iteration of the Fizir family of aircraft, the Fizir F1M (Fizir first Navy), was a seaplane developed by “Zmaj” in Zemun at the behest of the Navy Command for a reconnaissance seaplane on floats.

Referred to as the Zmaj Fizir-Jupiter or “Big Fizir,” these aircraft were utilized by the Naval Air Force for reconnaissance purposes and for towing targets during antiaircraft training.

In 1931, one of these aircraft was fitted with an NACA ring to enhance the cooling of the Jupiter engine and reduce drag.

These aircraft were operational during the war, with three being captured by the Italians, although it remains unclear whether they were utilized by the captors.


Fizir F1

Prototype with a 190 kW (260 hp) Maybach Mb.IVa (1 example, 1925)

Fizir F1V-Maybach

190 kW (260 hp) Maybach Mb.IVa (32 examples, 1928)

Fizir F1V-Loren 

340 kW (450 hp) Lorraine-Dietrich 12Eb W-12 engine (1st prototype converted 1928 + 15 Lorraine conversion Maybach 12 dB 400KS in 1933)

Fizir F1V-Hispano 

340 kW (450 hp) Hispano-Suiza 12G V-12 engine, (1 prototype converted in 1928)

Fizir F1V-Wright

160 kW (220 hp) Wright Whirlwind J-5 radial engine, (1 prototype and 15 production examples in 1930)

Fizir F1M-Jupiter

A naval seaplane with 310 kW (420 hp) Gnome-Rhône 9A / IAM 9AD radial engine (5 examples in 1930)

Fizir F1G-Castor

180 kW (240 hp) Walter Castor 7-cylinder radial engine, (1 prototype in 1931)

Fizir F1G-Titan

170 kW (230 hp) Bristol Titan 7-cylinder radial engine, (1 prototype in 1931)





10.21 m (33 ft 6 in)


12.71 m (41 ft 8 in)


3.10 m (10 ft 2 in)

Empty weight

1,100 kg (2,425 lb)

Gross weight

1,450 kg (3,197 lb)


1 × Maybach MbIVa 7-cylinder radial,

190 kW (260 hp)


Maximum speed

176 km/h (109 mph, 95 kn) at sea level

Service ceiling

6,000 m (20,000 ft)

Rate of climb

3.46 m/s (681 ft/min) to 5,000 m (16,405 ft).

One Hundred Years of the Serbian Air Force, 1912-2012-Miroslav Jandrić.
Short History of Aviation in Serbia-Čedomir Janić & Ognjan Petrović.
Yugoslav Fighter Colours, 1918-1941, Vol 1-Ognjan Petrovic & Djordie Nikolic.
Yugoslav Fighter Colours, 1918-1941, Vol 2-Ognjan Petrovic & Djordie Nikolic.
Serbian Aviation, 1912 – 1918 – Srpska Avijatika.



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