An Analysis and Reduction Design of Combustion Instability Generated in Hybrid Rocket Motor

Autor: Sunjae Rhee, Heejang Moon, Jinkon Kim, Jungpyo Lee
Rok vydání: 2014
Předmět:
Zdroj: Journal of the Korean Society of Propulsion Engineers. 18:18-25
ISSN: 1226-6027
Popis: In this paper, the mechanism of the combustion instability which may occur in a hybrid rocket motor with a diaphragm was studied. And the new design for a hy brid motor grain was suggested. It could increase a regression rate of solid fuel, and reduce a la rge pressure oscillation in a hybrid rocket motor with a diaphragm. It was confirmed that the main mechanism of a large pressure oscillation was hole-tone, and it was caused by a collision bet ween a diaphragm and a vortex which was generated in a pre-chamber. And 'Stepped Grain' design which had the mechanism for high regression rate in a motor with a diaphragm and could reduce a combustion instability was suggested.
Databáze: OpenAIRE