At the end of the WWII the Kayaba Katsuodori project arose, which clearly was an intercepting aircraft of the American bombing planes.

-This project was simple in its structure and simple in its engine which was a ramjet with characteristics very similar to those built by Skoda or Hispano Suiza that are shown in the corresponding chapters of the main publication.

“Kayaba Katsuodori”

-It was designed by a so-called Kayaba Ramjet Study Group created in early 1937.

-The engine that occupied the entire main part of the fuselage was called Model 1. It was capable of getting the plane at speeds of up to 560 mph (900 km/hr), although due to high fuel consumption, eventually this would remain in 380 mph (615 km/hr).

-As with all ramjets, it required an initial speed for its start.

-This speed was provided by four attached solid fuel rockets that were released when the fuel was exhausted.

From Appendix 12: Airplane and ramjet engine designed by Kayaba Power Station around 1943, although it did not leave the design panels.

“Katsuodori aircraft triptych”

-The main engine was a ramjet planned for about 750 Kgf of thrust, the Kayaba Model 1 engine.

-The Katsuodori is a fishing bird that has a similar resemblance to the plane. They were the Ki-200 and 202 models.

It needed 4 solid rocket engines as booster for take-off and they were released once the ramjet speed was reached.