| 摘要 |
PROBLEM TO BE SOLVED: To provide a hybrid rocket engine capable of shortening ignition delay time since oxidant is supplied till fuel grain is ignited, and reducing unstable combustion, by improving the ignitability of the fuel grain; and an igniting method of the hybrid rocket engine.SOLUTION: A hybrid rocket engine 10 is equipped with a motor case 3 which has a hollow heating chamber 1 and a fuel grain 2 contacting with the hollow heating chamber 1 inside; a liquid oxidant supply device 4 for supplying liquid oxidant L to the hollow heating chamber 1; and a combustion gas supply device 5 for supplying combustion gas G1 to the hollow heating chamber 1. The fuel grain 2 and the liquid oxidant L are heated by combustion gas G1 to be gasified, thereby igniting the fuel grain 2. The hollow heating chamber 1 is shaped in a hollow cylinder, and equipped with a hollow cylindrical solid auxiliary fuel 12 installed inside concentrically with the heat heating chamber 1. |
