Dutch Modelling and Aviation

In Memoriam

Klaas Willem Jonker
(Wilko)
† April 30, 2018

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

Martin S

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History

This type was a direct development of the Martin TT and equipped with another engine and ailerons in the upper wings.

It was a twoseat observation plane with a central float and smaller floats on the wingtips and under the tail. The straight wings were of equal span. It was striking that the fuselage was situated between the wings, supported by struts.

Dimensions:
Length: 9,02 m (30 ft 4.5 in) Wingspan: 14,15 m (51 ft 4.5 in)
Height: - m Wing area: - m2
Weights:
Empty weight: - kg Max. start weight: - kg
Performances:
Max. speed: 118 km/hr Climbing speed: - m/min (3200 ft 10 min)
Cruising speed: - km/hr    
Range: 800 km ? Service ceiling: - m
Miscellaneous:
Engine type: One Hall Scott A-5 rated 125 hp (60 hp Hall-Scott A-5-A)
Crew: One pilot plus one observer
Armament: None

 

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