Zmaj Fizir F1

The Fizir F1V was the basis from which engineer Rudolf Fizir developed a series of single-engine, two-seat, trainer/reconnaissance biplanes fitted with different engines.

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

Further development of the basic Fizir design 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 next three years.

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

Zmaj was also responsible for 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.

Variants

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)

Specifications

Crew

2

Length

10.21 m (33 ft 6 in)

Wingspan

12.71 m (41 ft 8 in)

Height

3.10 m (10 ft 2 in)

Empty weight

1,100 kg (2,425 lb)

Gross weight

1,450 kg (3,197 lb)

Powerplant

1 × Maybach MbIVa 7-cylinder radial,

190 kW (260 hp)

Performance

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).