The nine-passenger F.3X (as the F.121 was also known) with huge high-mounted wings, deep slab-sided fuselage and four 134kW Hispano-Suiza 8Ac engines in tandem pairs, won the 1923 French Grand Prix des Avions Transports and 500,000 francs. Four flew on the Farman airline's Paris-Brussels-Amsterdam route from 1926 and Danish Air Lines used a few between Amsterdam and Copenhagen. Four even uglier F.4X six-passenger aircraft followed, each with three uncowled 223.5kW Salmson Az.9 engines, two engines mounted (as before) above the landing gear on the lower stub wings and one in the upper fuselage nose. These served with Compagnie Internationale de Navigation Aerienne (formerly CFRNA) along with the more attractive Caudron 81 and Potez 32.
Interestingly military Jabirus also appeared as prototype heavy bombers and escort fighters with stepped noses, each carrying twin Lewis guns on a Scarff ring in a nose cockpit and light bombs in a fuselage bay. Heavier bombs or, a torpedo could be carried under the fuselage.
| ENGINE||4 x HS 8AC, 132kW|
| Take-off weight||5000 kg||11023 lb|
| Empty weight||3000 kg||6614 lb|
| Wingspan||19.0 m||62 ft 4 in|
| Length||13.7 m||45 ft 11 in|
| Wing area||80.0 m2||861.11 sq ft|
| Max. speed||180 km/h||112 mph|
| Ceiling||4000 m||13100 ft|
| Range w/max.fuel||600 km||373 miles|
|rupert marks, 28.10.2008|
I am looking for a copy of a Farman non radial engine manual, please can any body help?
|Alan Methven, 29.09.2008|
Great site thanks but the 3-view drawing on the Farman F.121 Jabiru page is marked incorrectly as it is, I think an F.120 Jabiru.
Do you have any comments about this aircraft ?
FACTS AND FIGURES
© At least three different radiator
arrangements were tried in
attempts to cure the Jabiru's
chronic cooling problems.
© Passengers sat in wicker chairs
angled towards the centre, and
had a superb view from the
continuous row of windows
around the cabin.
© Perched atop the airframe in
an open cockpit, the Jabiru's
pilot had great difficulty