• 한국군사과학기술학회지
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• 제25권3호
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• pp.321-328
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• 2022

The current development tend of the gun propellants that they should have low sensitivity and high energy. We studied a nitrocellulose based propellant composition that replaced sensitive NG with RDX and DEGDN which high energy and low sensitivity. The important factors in the design of the gun propellant were impetus and flame temperature. NC-based propellant containing RDX showed similar impetus but low flame temperature compared to KM30A1, a triple-based propellant. The developed propellant composition didn't show any abnormal combustion reaction and the characteristics of ballistic resistance were also confirmed.

• 한국군사과학기술학회지
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• 제27권3호
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• pp.428-435
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• 2024

The important factors in the design of the gun propellant are impetus, flame temperature and pressure. In this paper, we considered a nitrocellulose based propellant composition that replaced sensitive NG(Nitroglycerin) with RDX(Cyclotrimethylenetrinitramine) and DEGDN(Diethylene glycol dinitrate) which high energy and low sensitivity. Particle size and content of RDX are the two main factors that affect the burning stability of RDX-based propellants. Among them, the characteristics of the propellant according to the particle size of RDX were confirmed. The relative combustion rate(R.Q., Relative Quickness) of the propellant changed according to the RDX particle size, and internal ballistics of properties of propellant were also varied. The particle size of RDX can be confirmed as a major factor in the combustion and internal ballistics characteristics of the propellant.

• 한국추진공학회지
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• 제22권3호
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• pp.40-45
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• 2018

고체 추진기관의 불량 발생 요인 중 가장 큰 부분을 차지하고 있는 추진제 기공 및 크랙은 추진제의 점도와 물성이 큰 영향을 미친다. 본 연구는 혼합형 고체 추진제의 한 종류인 나이트레이트 에스터 폴리이서(Nitrate Ester Polyester; NEPE)계열의 추진제에서 주로 사용되는 RDX의 입도 및 혼합 함량에 따른 추진제 점도, 기계적 물성 및 연소특성 변화를 관찰하였다. RDX 입도와 혼합 함량에 따라 미경화 추진제의 경시적 점도가 크게 변화가 되었으며, 이에 따른 추진제 물성 또한 변화가 있었다. 추진제의 낮은 점도와 안정된 기계적 물성을 동시에 고려할 때, RDX의 입도 및 혼합 함량은 NEPE계 추진제의 주요 인자로 확인할 수 있다.