Ignition and reactive spray characteristics of high test peroxide-based rapid hypergol과산화수소 기반 신속 접촉 점화 추진제의 점화 및 반응성 분무 특성 연구

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The capability of instant pulse and restartability is a fundamental specialty of in-space propulsion. A hypergolic propellant is considered the most suitable propellant combination for in-space propulsion. Traditional toxic hypergols have been extensively adopted in satellite/interceptors due to their high performance and good storability. Recently, Green/low-toxicity propellant has been remarked as the replacement because it can offer benign safety procedures, handling infrastructure, and significantly reduce economic expenses. Herein, the challenges ahead of the feasibility of substituting such toxic hypergols in the practical application were demonstrated; the study was aimed to resolve typical poor ignition performance and enhance understanding of reactive burning spray. The hybrid use of catalytic and redox reactions reduces the ignition delay to less than 3 ms, which is comparable to that of hydrazine/nitrogen tetroxide. Furthermore, the visualization of burning spray was implemented using a blue light spectrum. The dynamic pressure ratio significantly varied the hypergolic burning spray structure. The inherent hypergolic instabilities were injection mixing explosion and popping throughout the comprehensive analysis based on the visualization in sync with pressure perturbation. Moreover, the hypergolic combustion under pressure exhibited shock instability, and the suppression strategies regarding modification of thruster dimensions and propellant were attempted.
Advisors
Kwon, Sejinresearcher권세진researcher
Description
한국과학기술원 :항공우주공학과,
Publisher
한국과학기술원
Issue Date
2022
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 항공우주공학과, 2022.8,[vii, 158 p. :]

Keywords

Hypergolic propellant▼aHypergolic instability▼aReactive burning spray▼aHydrogen peroxide; 접촉점화추진제▼a접촉점화 연소불안정성▼a반응성 유동▼a과산화수소

URI
http://hdl.handle.net/10203/309317
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=1007912&flag=dissertation
Appears in Collection
AE-Theses_Ph.D.(박사논문)
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