• 제목/요약/키워드: K676/K677 추진장약

검색결과 3건 처리시간 0.017초

추진장약 수락시험의 시험단계 통합 연구 (An Integration Study of the Firing Test Stage at the Acceptance Test for the Propelling Charge)

  • 김재갑;김재훈;나태흠;김보균;박노석
    • 한국군사과학기술학회지
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    • 제19권2호
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    • pp.171-176
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    • 2016
  • In this paper, the integration of the firing test stages at the acceptance test of the propelling charge has been studied using statistical analysis on the basis of the test data of K676 and K677 propelling charge for K9 self propelled howitzer. Acceptance test of K676 / K677 propelling charge consists of 3 stages and each stage is charge assessment test, charge uniformity test and charge proving ground test. Many of rounds are fired and much money is spent to prove the charge performance at each stage. The result of t-test shows that there is no difference between charge uniformity and charge proving ground test stage of K676 and K677 propelling charge.

추진장약 수락시험의 적정 점검탄 분석 연구 (An Analysis Study of the Proper Quantity of Conditioning Rounds at the Acceptance Test of the Propelling Charge)

  • 나태흠
    • 한국군사과학기술학회지
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    • 제14권4호
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    • pp.615-621
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    • 2011
  • In this paper, the proper quantity of conditioning rounds has been studied using the statistical analysis on the basis of the acceptance test data of K676 and K677 propelling charge for K9 self propelled howitzer. In general, the muzzle velocity of the initial rounds tends to be a little lower than that of the succeeding rounds. The latter rounds are likely to have the constant velocities after firing the appropriate conditioning rounds. The main cause of velocity difference was proved to be the proper quantity of conditioning rounds by doing the correlation analysis among the initial tube temperature, the tube life and the quantity of conditioning rounds. The result of paired t-test shows that two rounds of conditioning projectiles are proved to be enough to maintain the constant velocity in the case of the acceptance test of K676 and K677 propelling charge.

추진장약 K676 및 K677의 저장온도가 저장수명에 미치는 영향 (A Study on the Effect of Storing Temperature upon the Self Life of Propelling Charge K676 and K677)

  • 조기흥;장일호
    • 한국군사과학기술학회지
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    • 제8권1호
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    • pp.14-24
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    • 2005
  • A propellant mainly consisting of nitric ester including nitrocellulose, nitroglycerine and nitroguanidine is characteristic of being decomposed naturally. And this phenomenon is known as being affected mostly by its storing temperature. In this research, the effect of storing temperature on self life has been studied by measuring the contained quantity of residual stabilizer of propellant KM30A1, ignition powder and combustible cartridge case, which are parts of 155MM propelling charge K676 and K677; the method for the measurement is acceleration aging test, and decomposition reaction equation and Berthlot Equation were used for the calculation. The result of this research shows that propellant KM30A1, ignition powder, combustible cartridge case in order of decreasing self life, and the self life decreases to 1/3 as the temperature increases by $10^{\circ}C$.