Nederlandse Modelbouw en Luchtvaartsite

Dutch Modelling and Aviation

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.

Thulin K, KA and LA

History

Thulin K

The Thulin K was designed in 1916 by Dr. Thulin of the Swedish AB Thulinverken.
It was a single seat fighter.
The shoulder plane had a wooden construction and no flaps. It had a Thulin A rotary engine of 90 horsepower. This was derived from the French Gnome rotary engine.
Two examples were built for Swedish Flygvapnet and twelve examples for the Dutch Navy.

Also a two-seat version was built, in which the instructor and the pupil sat in tandem.
Three examples were built for the Dutch Navy.

Thulin LA

The Thulin LA, a biplane trainer, was designed in 1917 and was based on the earlier Thulin E and Thulin L. These were derived from the Albatros B.I

The Thulin LA had a custom fuselage, empennage and another engine.

Fifteen examples were built, of which ten of the Dutch Navy.

 

Technical information Thulin LA
Dimensions:
Length: 6,60 m Wingspan: 11,5 m
Height 3,4 Wing area: 36 m2
Weight:
Empty weight: - kg Max. Start weight - kg
Performance:
Max. Speed: 120 km/hr Climbing speed: - m/min
Range: - km Service ceiling: - m
Miscellaneous:
Engine type: One Thulin A rated 80 hp
Crew: Two men: one instructor plus one pupil
Armament: None

 

Technical information Thulin K (two seat)
Dimensions:
Length: 6,6 m Wingspan: 11,55 m
Height 2,83 m Wing area: - m2
Weight:
Empty weight: - kg Max. Start weight - kg
Performance:
Max. Speed: 135 km/hr Climbing speed: - m/min
Range: - km Service ceiling: - m
Miscellaneous:
Engine type: One Thulin A rated 80 hp
Crew: Two men: one instructor plus one pupil
Armament: None

 

Technical information Thulin K
Dimensions:
Length: 6,6 m Wingspan: 11,55 m
Height 2,83 m Wing area: - m2
Weight:
Empty weight: 522 kg Max. Start weight - kg
Performance:
Max. Speed: 135 km/hr Climbing speed: - m/min
Range: - km Service ceiling: - m
Miscellaneous:
Engine type: One Thulin A rated 80 hp
Crew: One aviator
Armament: Eventually one machine gun