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Dutch Modelling and Aviation

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In Memoriam

Klaas Willem Jonker
(Wilko)
† April 30, 2018

On Monday 30 April 2018, Wilko Jonker died after a long illness at the age of 58. He leaves behind a wife and two children. The Dutch military aviation and plastic modeling were his hobby and on this website he shared all the knowledge he has collected over the years. His hobby has been able to distract him from the persistent disease in his body until the last week of his life. The contacts with other hobbyists were a major support for him.

This website will be maintained by different people for as long as possible, so that other enthusiasts can continue to benefit from extensive content.

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Saturday, 18 January 2020 02:31

Fokker C.X

History

In the early thirties (of the twentieth century) the Fokker CX was developed as a successor to the very successful Fokker C.V.

Fokker sent a representative to the ML-KNIL, who had over twenty Fokkers C.VE in use, to determine whether there was a need for a successor. After some prodding,  a reaction came just in mid-1933. Fokker responded very quickly with data about the new Fokker C.X.

In early 1934 there was a contract for the construction of a prototype, equipped with Rolls Royce Kestrel IIS liquid-cooled inline engine of 610 hp. The prototype made its first flight on October 9, 1934, but crashed already in December.

The ML-KNIL (NEIAF) placed in February 1935 a contract for the construction of fourteen aircraft equipped with Rolls Royce Kestrel V engine of 685 hp. The aircraft were designated as Fokker C.XK. The prototype, with registration FCx450, was repaired and flew again in May 1935.

The first real production unit, FCx451, could be used by Fokker for demonstration flights with civil registration PH-AKIJ. In mid-September 1935 this aircraft made a flight demonstration in Ankara and crashed during a dive pieces of the aircraft broke of an suddenly the left wing broke off. "Flutter" was then identified as the most likely cause.
After reviewing the wing the flaps of the lower wings were omitted.

 

Technical information
Dimensions:
Length: 9,27 m Wingspan: 12 m
Height: 3,2 m Wing area: 31,5 m2
Weights:
Empty weight: 1460 kg Max. start weight: 2310 kg
Performances:
Max. speed: 316 km/hr Climbing speed: - m/min
Cruising speed: 270 km/hr    
Range: 850 km Service ceiling:  8800 m
Miscellaneous:
Engine type: One Rolss Royce Kestrel V rated 640 hp
Crew: Two men: one aviaotr plus one observer/air gunner
Armament: Two machine guns; bombs