(transalted as Ramjet engine of Ishikawajima Harima Industry, which was offered for the type 1 industrial helicopter industry built in the National Science Museum) However this is clearly NOT a ramjet as there is no air intake!! This is most probably a tip-burner from a similar gyrodyne, using compressed air from a fuselage mounted gas turbine compressor or burning fuel in a combustion chamber, but NOT from the Kayaba Heliplane, as described.