PURPOSE: To simplify structure and decrease resistance at the flying time by forming an introduction passage which introduces combustion gas into a spike nozzle, and injecting the introduced gas into the introduction passage from an injection port formed at a nozzle face of the nozzle to the outside part.
CONSTITUTION: Injection nozzles 12 are provided around a rocket body 11 of an air introduction type rocket, and an outer cylinder 13 covering a part of the rocket body 11 is arranged. The rocket body 11 has a body case 14 and first and second propellants 15, 16 formed inside a first combustion chamber of the case 14, and an ignitor 17 is arranged at the front. The body case 14 has a spike nozzle 14d at the rear part, and a thrust vector controller 25 is provided at the inside. The controller 25 has an introduction passage 26 which introduces the combusted gas generated in the first combustion chamber 19, and injection ports 27 formed at a nozzle face 14e which injects the gas to the outside, and a fluid controller 28 is provided at the introduction passage 26.
IKUTA YOSHIMITSU
KIKUCHIYA SEIGO
