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Kjeller F.F.9 Kaje I
 
   


Twin seater trainer and recce plane

History:
In 1921 work was begun on obtaining a new basic trainer for the Army Air Core. On its completion, the resulting aircraft was given the name F.F.9 Kaje and was equipped with a 120 hp water-cooled 6 cylinder Mercedes in-line engine. The airfoil profile was German - "Göttingen" - and was built under licence. Apart from the airfoil profile, the aircraft was of Norwegian construction, built from wood and covered with canvas. The engine was housed in aluminium.

Three versions of the plane were built. In 1922, ten Kaje Is were built. The Kaje II had a broader wingspan than its predecessor, and horns on the ailerons for improved balance. Four Kaje IIs were built in 1925. The Kaje III was given horns on the elevator and the rudder too, and five of this model were completed by 1926. The Kaje was a solid training plane, well suited to the task, but when attempting a roll, the aircraft had a tendency to slip sidewards and develop an uncontrollable spin. It was therefore not suitable for advanced training. This model was in use until the early 1930's.

The Museum's Kaje: A Kaje with registration number 33 crashed into lake Romsjøen during a training flight on July 15, 1931. Divers from Draugen Frogman's Club found the plane in 1973.

Work on the restoration of the aircraft was handed over to air mechanics Ivan Kristiansen and Birger Larsen at Bodø air base. The plane was dismantled and all parts that could still be used were carefully restored. The fuselage had been broken in two during the crash and the wings broken off, but the aim was to use every single piece of original material if possible. The fuselage was reconstructed, and the cockpit was reassembled, complete with instruments and rudder controls. The same thing applied to the landing gear and engine, that were as good as new, as were the tailplane and the rudder. The wings had to be built from scratch, and when one of the wing halves was complete, the aircraft was moved to Kjeller, where the rest of the wings were built and fitted. An original Kaje engine was obtained from Rinnleiret, and after being overhauled by Helge Jakobsen in Bodø, the engine was sent to Kjeller, where the magnets were adjusted and the manifold installed. Then the engine was started for the first time since 1931.


TEKNISKE DATA
LENGDE: 8,4 m
VINGESPENN: 9,5 m
HØYDE: 3,2 m
MAKS. VEKT: 994 kg
MAKS. HASTIGHET: 132 km/t
MAKS. HØYDE: 3200 m
REKKEVIDDE: 375 km
MOTOR: 1 Mercedes, 120 Hk
ANDRE OPPLYSNINGER:
 


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