• Proceedings of the Korean Magnestics Society Conference
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• 2013.12a
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• pp.21-22
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• 2013

• Proceedings of the Korean Magnestics Society Conference
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• 2012.11a
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• pp.155-156
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• 2012

• Proceedings of the Korean Magnestics Society Conference
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• 2013.05a
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• pp.36-37
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• 2013

• Proceedings of the Korean Magnestics Society Conference
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• 2012.05a
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• pp.65-65
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• 2012

• Journal of the Korea Institute of Military Science and Technology
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• v.6 no.4
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• pp.22-28
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• 2003

In the conventional weapon system, such as gun and small arms, it Is a general trend that for maximization of its performance and enhancement of its effectiveness, the firing control system(FCS) is developed and applied with the guns and small arms in the world. The FCS of the small arms for infantry man is composed of a few of sensors for acquisition of input data of FCS, such as range measurement, position sensing of weapon, temperature, etc., computer, displayer and power pack, and also the air burst munition is developed in parallel for the maximization of FCS's effectiveness. Since the flight time setting fuze for the air burst munition is adapted for next me, the measuring device of the muzzle velocity is needed to overcome the variation of muzzle velocity due to producing procedures and the differences of the using temperatures and so maintain the burst position accuracy This paper contained the technical information on the development of the measuring device of muzzle velocity, which designed in compact & light weight configuration with reliability and accuracy.

• Journal of the Korean Magnetics Society
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• v.25 no.3
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• pp.83-86
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• 2015

Nowadays the weapon systems are employed air bursting munition (ABM) as smart programmable 40 mm shells which have been developed in order to hit the target with programmed munition that can be air burst after a set distance in the battlefield. In order to improve the accuracy of such a bursting time, by measuring the speed of the munition from the barrel, weapon systems calculate the exact time of flight to the target and then the time information must be inputted to the munition. In this study, we introduce a device capable of detecting a shot at K4 40 mm automatic grenade. The shot is composed of a rotating copper band to convert linear motion into rotary motion when it passes through the barrel, the steel section is exert the effect of fragment and aluminum section to give fuze information. The aluminum section was used to detect munition using eddy current method. To measure muzzle velocity by means of non-contact method, two eddy current probes separated 10 cm was employed. Time interval between two eddy current probe detection times was used as muzzle velocity. The eddy current probe was fabricated U-shape Mn-Zn ferrite core with enamelled copper wire, and 200 kHz alternating current was used to detect inductance change. Measured muzzle velocity using the developed sensor was compared to the Doppler radar system. The difference was smaller than 1%.

• 제어로봇시스템학회:학술대회논문집
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• 1997.10a
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• pp.1-3
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• 1997

This paper presents a muzzle velocity measuring equipment(MVME) for the AN/UPQ6 model using doppler signals, which are generated from the difference of the transmitter signals and the receiver signals. It describes the principles of a velocity measurement, a ballistic analysis program and the accuracy of the MVME. With a comparison between the existence velocity meter and this system, the accuracy and the usefulness of this equipment is validates.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2002.04a
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• pp.60-60
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• 2002

비행탄의 종말속도증대를 위하여 고체램제트를 이용하는 개념은 현재 세계적으로 여러나라에서 연구 중에 있다. Solid Fuel Ramjet Propulsion(고체연료 렘제트 추진)은 로켓추진에 비하여 월등히 높은 비추력을 가지며 구조적으로 매우 간단하여 탄의 사거리 및 평균속도를 증대시키는 좋은 수단으로 사용되고 있다. 그러나 간단한 구조에도 불구하고 고체렘제트의 작동은 매우 다양한 물리적 현상이 연관되므로 필요한 성능을 얻기 위해서는 이들의 상호 작용을 고려하여 설계의 최적화 및 성능 예측이 필요하다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2000.11a
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• pp.29-29
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• 2000

추진제의 폭연 특성을 실험실 규모로 측정하는 시험방법으로 NAWC에서 개발한 BIC (Ballistic Impact Chamber) 시험과 SNPE에서 개발한 Shotgun/RQ Bomb 시험이 있다. SNPE에서는 화약과 추진제가 UNO 위험등급 분류체계에서 1.6급수(우연한 개시나 반응의 전환 가능성이 거의 없는 매우 둔감한 물질)로 분류되는 기준을 UN Test Series 7c(ii)에 탄속 150m/s에서 dP/dt가 15MPa 이내로 규정하고 있다.(중략)

• Journal of the Korea Institute of Military Science and Technology
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• v.7 no.3 s.18
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• pp.11-20
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• 2004

In this paper, the acceptance criteria(Striking Velocities) for the A12519 weldments have been developed. Dynamic impact simulation of A12519 plate was achieved by using LS-DYNA, and predict the projectile velocity and the crack length. Also, Ballistic impact tests of A12519 plate have been performed, and compared with analysis results. Critical velocities of A12519 plate were acquired respectively, and striking velocities of A12519 weldments were calculated. Present work data will be used by basic data in ballistic impact test for A12519 weldments.