Among ammunitions which are stored in a war field, the lifespan of propelling gunpowder is affected by storage environment such as storage temperature, humidity, and exposure to sunlight. These are because Nitrocellulose (NC) which is the main component of propelling gunpowder can be naturally disassembled to unstable substances similar with other nitric acid ester. We can’t prevent it fundamentally from being disassembled, but to restrain induction of automatic disassembly by decomposition product, a decomposition product (NO2, NO3, and HNO3) and tranquillizer DPA (Diphenylamine), having high reactivity, are added into a propellant. For this, it will decrease the velocity of tranquillizer which can also affect the velocity of producing the decomposition product of NC, storage temperature or humidity of propelling gunpowder is higher, drop of tranquillizer content is much faster. Therefore, to extend storage lifespan of propelling gunpowder, it is really important to control storage temperature or humidity inside the magazine. Hereupon, according to the manufacture of small scale model magazine and the result of performing experiments and measuring variation of inside temperature(storage temperature), using roof types that have a steel slate structure of magazine among ground magazines, this research shows the differences in details.

1. 서론
 2. 기존연구 고찰 
 3. 실험
 4. 결과 및 고찰
 5. 결론 및 향후 연구방향
 References

• Myoungjin Choi(Dept. of Defense & Science Techonololgy, Howon University, Dept. of Industrial and Information Systems Engineering, Chonbuk National University) | 최명진
• Hyungju Park(Dept. of Fire Administration Service, Howon University) | 박형주
• Jaekyung Yang(Dept. of Industrial and Information Systems Engineering, Chonbuk National University) | 양재경 Corresponding Author
• Beksun Kim(Dept. of Industrial and Information Systems Engineering, Chonbuk National University) | 김백선