Evaluation of Fuel-Rich Combustion Characteristics of Paraffin Solid Fuel with a Helical Port

Seungbin Baek; Suhan Ko; Seunghyun Kim; Yunho Kim; Hasang Jeon; Heejang Moon

doi:10.6108/KSPE.2026.30.4.073

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2026 Vol.30, Issue 4 Preview Page

RESEARCH PAPERS

Evaluation of Fuel-Rich Combustion Characteristics of Paraffin Solid Fuel with a Helical Port 나선형 포트를 가지는 파라핀 고체 연료의 농후 연소 특성 평가

31 August 2026. pp. 73-81

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Abstract

This study experimentally investigated the combustion characteristics of paraffin solid fuel with a helical port for application to a non-premixed gas generator in a ducted rocket under various oxidizer mass flux conditions. The helical port fuel exhibited regression rates 44~70% higher than a conventional cylindrical port fuel and produced fuel-rich gases with O/F ratio from 0.39 to 0.72. In addition, analysis of regression rate coefficients and cutting methods indicated that oxidizer flow modification by the helical port is the primary factor enhancing the regression rate.

Keywords

Helical Port

Paraffin Solid Fuel

Combustion Characteristics

Non-premixed Gas Generator

본 연구에서는 덕티드 로켓용 비예혼합 가스발생기 적용을 위하여 나선형 포트를 가지는 파라핀 고체 연료의 연소 특성을 실험적으로 분석하였다. 나선형 포트를 구성하는 형상 매개변수를 선정한 후, 산화제 질량유속 조건을 달리하며 연소시험을 수행하였다. 시험 결과, 나선형 포트 연료는 동일 조건에서 단일 원통형 포트 대비 약 44~70% 높은 후퇴율을 나타냈으며, O/F ratio 0.39~0.72 범위의 연료 과농 가스를 생성하는 것으로 확인되었다. 또한 나선형 포트 연료의 후퇴율 상수 변화와 절단법 결과 분석을 통해, 나선형 포트에 의해 유도된 추가 산화제 유동 구조 변화가 연소 표면적의 변화 대비 후퇴율을 증가시키는 주요 요인임을 확인하였다.

키워드

나선형 포트

파라핀 고체 연료

연소 특성

비예혼합 가스발생기

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Information

Publisher :The Korean Society of Propulsion Engineers
Publisher(Ko) :한국추진공학회
Journal Title :Journal of the Korean Society of Propulsion Engineers
Journal Title(Ko) :한국추진공학회지
Volume : 30
No :4
Pages :73-81
Received Date : 2026-05-05
Revised Date : 2026-07-10
Accepted Date : 2026-07-15
DOI :https://doi.org/10.6108/KSPE.2026.30.4.073

Journal of the Korean Society of Propulsion Engineers ISSN:1226-6027(Print) 2288-4548(Online) 한국추진공학회지

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