EK-2 Experimental Single-Seat Destroyer
Engine: Ryusei GV twin-row 18-cylinder radial
Max output: 3000hp with 4-step supercharger
Propeller: EK-P-1 constant speed, variable pitch, changing electrically, with full feathering and cuffs (propeller cuff : a fairing of suitable airfoil shape used to cover the shanks of propeller blades in order to reduce the aerodynamic losses - MW)
Max. speed: 712km/h
Cruising speed: 670km/h
Landing speed: 150km/h
Range at cruising speed: 2800km with drop tank
Ceiling: 1600 m (???)
Climbing at 1000m in 40sec
Wing area: 17sqm
Wing load: 157kg/sqm
Armament: 2 X 36mm cannon in the fuselage
4 X 20mm cannons in the wings
1. The radial engine is placed in the centre of gravity for better balance. The propeller is driven by an extension shaft for better cooling (???).
2. Although difficult for mass production the wings are tapered.
3. Twin flaps
Designed by: Sekikawa Eijiro from Kobe
Featured in the June 1943 issue of "Hiko Shonen" (Airplane Youth)
At first glance it looks like a very interesting combination of the Supermarine Spitfire and the Bell P-39 Airacobra. Quite intriguing as a proposal but things get bizarre with the radial engine choice. Radial engines placed that back in the fuselage and with a completely enclosed nose create huge problems with cooling.
Similar designs would be:
1. the Republic XP-72, with common features like the supercharger, the extension shaft for the prop and very similar armament
2. the Blackburn Firecrest
and is almost identical in concept with the
An unusual design that does not look Japanese at all and would have been much more straightforward with a liquid-cooled engine. Let's not forget the various problems "Raiden" had with the placing of the engine further back in the fuselage and the need for a fan for cooling.