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류백능(Baekneung Ryoo),김백용(Baegyong Kim),유지창(Jichang Yoo) 한국추진공학회 2016 한국추진공학회 학술대회논문집 Vol.2016 No.12
유도탄 탄약고와 발사관(또는 저장 용기) 내부의 적정 저장 습도는 전자/기계 부품의 부식과 시효성 품목의 물성 저하를 방지하여 유도탄의 수명 연장 여부를 좌우하는 요소이다. 본 논문에서 철의 부식 속도가 급격히 증가하기 시작하는 경향을 고려하여 탄약고의 적정 저장 습도 기준을 제시하였고, Peck’s moisture model의 계산 결과와 실제 군에서 유지하고 있는 저장 습도 사례에 따라 발사관 내부의 적정 습도 기준을 제시하였다. The proper storage humidity in missile magazine and launch tube(and/or storage container) is very important factor that prevents the corrosion of electronic/mechanical components and deterioration of physical/mechanical properties of the energetic components, and affects the service life extension lifetime. In this paper, the proper storage humidity standards of inside the missile magazine and launch tube(and/or storage containers) is suggested.
徐延穆,柳百能,孟學永 公州大學校 基礎科學硏究所 1994 自然科學硏究 Vol.3 No.-
가교밀도가 다른 몇가지 EDPM 가환물을 제조하여, 가교밀도가 탄성체의 기계적 성질에 미치는 효과등을 검토하였다. 가교밀도가 증가할수록 유리전이온도가 증가하였다. 팬텀모델이 가교밀도를 결정하는데 최적이었다. 문턱 개열에너지는 29~127J/m2 범위로 판명되었다. Several samples of the EPDM vulcanizates with various crosslink density(XLD) are prepared by changing the addition amounts of surf fur and ENB. The XLD data are obtaned from experiments, such as the swelling and stress, and their effects on the mechanical properties of the elastomer are studied. The XLD is increased as the amount of sulfur and ENB increased and the density of elastomers, the amount of gel, and the glass transition temperature increased accordingly, while the molecular weight between crossllinking points of the network(Mc) decreased. The XLD data obtained from swelling and stress experiments are due to the physical constraints on the juntion position imposed by surrounding chains. It was also found that the phantom model gives better agreement in determining XLD than the affine model with the experimental data. Hysteresis ratio is found to be increasing as the strain rate, tear energy, and Mc increased, and as the XLD decreased. It is also found that the storage modulus increased as the XLD increased in the dynamic mechanical properties. The 100% modulus are also found to be increasing as the XLD increased, and a linear relationship of M100=0.124×10-4N0+0.74 is obtained. The tear energy increased as the tear rate and temperature also found to be a linear function of the XLD, and the threshold tear energy is a range of 29∼127J/m2.
김인철,류백능,정정용 한국추진공학회 2006 한국추진공학회지 Vol.10 No.3
Several propellants were investigated experimentally for ignition characteristics in subatmospheric pressure. The threshold ignition pressure was 4 psia for HTPB/AP composite propellant. The partial replacement of AP in HTPB/AP propellant by 5~15% of HMX, HNIW showed that the improvements in ignition delay was over 50% and the threshold pressure was below 0.4 psia. This appears to be due to the characteristics of HMX and HNIW exothermic dissociated at the temperature(~220℃) lower than that of AP. The ignition substance B/KNO3 was coated thinly on the propellant surface for better ignition performance. As a result, ignition delay time of 15% was improved. NC is applied to B/KNO3 ignition substance as a secondary binder and NC-B/KNO3 suspension solution is coated to the propellant surface. HTPB/AP 혼합형 추진제(A형)와 니트라민계 산화제가 소량 함유된 추진제의 진공 점화 특성을 고찰하였다. 추진제의 임계 점화 압력은 4 psia로 판단되었고, AP의 일부를 HMX와 HNIW로 5~15% 치환한 니트라민계 혼합형 추진제(B형)에서 임계 압력은 0.4 psia, 점화지연시간은 50% 이상 향상되었다. 이는 HMX나 HNIW가 AP에 비해 낮은 온도(~220℃)에서 발열 분해되는 특성에 기인되는 것으로 보인다. 점화도움물질인 B/KNO3를 추진제 표면에 코팅한 결과, 15% 정도 점화성이 개선되었다. B/KNO3에 2차 결합제로 NC를 소량 사용하고, 이를 추진제 그레인의 점화도움물질로 적용하였다.