Fokker S.IX
1937
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Fokker S.IX

Designed as a replacement for the S.IV basic trainer, the Fokker S.IX was suitable also for aerobatic training. The S.IX was built in two versions. The first, designated S.IX/1, was powered by an Armstrong Siddeley Genet Major radial engine. First flown in 1937, the type was used by the Netherlands army air force from 1938 to 1940 as a standard basic trainer, and a number of S.IX/1s were built by the Dutch manufacturer Kromhout. The second version, designated S.IX/2 was powered by a 125kW Menasco Buccaneer inline engine. A total of 27 S.IX/2s was ordered for the Netherlands navy air force, but only 15 had been delivered when production was terminated by the German invasion. Army orders for the S.IX/1 totalled 24, but there is some uncertainty about whether or not all of these were built and delivered, for, according to Fokker records, only 20 were completed.

Like many lightplanes used in service training schools, in the desperate circumstances which existed at the time of the German invasion the S.IXs were called upon to carry out roles for which they had never been intended, and S.IXs of both services were in use for liaison and evacuation duties until the end of Dutch resistance.

Fokker built three S.IX/1s after World War II had ended, these being powered by Kromhout-built Genet Major engines.


Specification 
 MODELS.IX/1
 ENGINE1 x Armstrong Siddeley Genet Major radial piston engine, 123kW
 WEIGHTS
    Take-off weight975 kg2150 lb
    Empty weight695 kg1532 lb
 DIMENSIONS
    Wingspan9.55 m31 ft 4 in
    Length7.65 m25 ft 1 in
    Height2.90 m10 ft 6 in
    Wing area23.00 m2247.57 sq ft
 PERFORMANCE
    Max. speed185 km/h115 mph
    Cruise speed150 km/h93 mph
    Ceiling4300 m14100 ft
    Range710 km441 miles

Comments
Gerard van Gelswijck, 13.08.2017

Only the Genet Major engines are built by Kromhout and not the complete Aircraft

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