• Bulletin of the Korean Space Science Society
• /
• 2007.10a
• /
• pp.109.1-109.1
• /
• 2007

• The Bulletin of The Korean Astronomical Society
• /
• v.34 no.1
• /
• pp.176.1-176.1
• /
• 2009

• ETRI Journal
• /
• v.8 no.3
• /
• pp.44-50
• /
• 1986

본고는 현재 수행중에 있는 ISDN 프로토콜 연구 과제에 속하는 프로토콜 검증장치구현과 관련하여 X. 25 Product의 level 2에 대해 conformance test를 실시하는데 사용된 테스트 방법, 테스트 시스팀 구성, 테스트 시나리오 등의 테스트 환경과 실제 테스트를 실시한 결과 등을 중심으로 기술하였다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2013.10a
• /
• pp.253-254
• /
• 2013

• Proceedings of the Korean Radioactive Waste Society Conference
• /
• 2012.10a
• /
• pp.171-172
• /
• 2012

• Proceedings of the Korean Radioactive Waste Society Conference
• /
• 2016.05a
• /
• pp.113-114
• /
• 2016

• Proceedings of the Korean Radioactive Waste Society Conference
• /
• 2012.05a
• /
• pp.107-108
• /
• 2012

• Journal of the Korea Society of Computer and Information
• /
• v.16 no.4
• /
• pp.225-233
• /
• 2011

In this paper, we propose a remote control station based on the awareness of various combat field situation in order for operating multiple unmanned ground vehicles. Our remote control station is capable of sending a variety of messages designed for carrying out the skillful movement for collaborate among unmanned ground vehicles, gathering the information related with combat field situation, and completing the assigned missions which are described by operator in advance. To verify the effectiveness of our proposal, we develop the sophisticated remote control station and conduct a great many remote operating tests for multiple unmanned ground vehicles.

• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.36 no.1
• /
• pp.91-96
• /
• 2012

The retract actuator makes the landing gear retract or extend during take-off and landing of an aircraft. To prevent folding of landing gear that has remained in the extended state because of an unexpected external disturbance, an internal locking device is applied to the retract actuator. The locking device is restrained with another internal component by oil pressure supplied to the retract actuator, and this restraint makes the locking of the actuator possible. Because locking and unlocking are repeated during retraction and extension of the landing gear, the locking device takes repeated identical loads, and the possibility of fatigue failure exists. In this study, the process and results of fatigue analysis for the locking device are presented, and the appropriateness of the analysis result is verified using a fatigue test.

• Journal of the Earthquake Engineering Society of Korea
• /
• v.1 no.2
• /
• pp.39-48
• /
• 1997

New form of base isolators made of steel spring coated with both natural and artficial rubber were manufactured and tested for material properties. Shaking table experiments were performed using a model structure attached with the bearings. The model structure used in the test is a 1/4 scaled steel structure, and earthquake records were used to check the lateral and vertical stability and effectiveness of the isolators. According to the results all three types of isolators turned out to be effective in reducing the acceleration induced by the earthquake vibration.