History
This could be classified as a “paper” airplane, since it only existed as a design. The project was initiated as a search for greater performance and alternative power sources. Germany provided assistance on the project and research progressed quickly and it is assumed that design of the Katsuodori took place in the middle of the war. The Katsuodori had a tailless fuselage with a sharply swept wing. The plane was to use four solid fuel rocket boosters to propel the aircraft to speed, and then switch on the ramjet propulsion system. The plane could use a droppable dolly for a land take-off or it was planned to be carried by a bomber with removable struts. When the Me163 design and production was complete, it killed further research on the Katsuodori, as the Me163 was a proven design, flying in Germany.