Koolhoven F.K.55

 KoolFK55-2
 
The prototype of the F.K.55 was a contra propelled fighter with many innovations.

 

koolfk55

 

A high performance fighter with retractable gear, the F.K55 was one of the highlights at the Paris Air Salon of 1936.
 
A second test flight prototype had been build and flown, but the project was delayed because priority was given to more conventional fighters.