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정진석(Jinseok Jeong),사영민(Youngmin Sa),김현식(Hyun-Sik Kim) 한국해양공학회 2018 韓國海洋工學會誌 Vol.32 No.2
The marine industry is rapidly developing as a result of the increase in various needs in the marine environment. In addition, accidents involving ship fires and explosions and the resulting casualties are increasing. Generally, manpower and safety problems exist in fire fighting. A fire fighter in the form of an autonomous surface robot would be ideal for marine fire safety, because it has no manpower and safety problems. Therefore, an autonomous surface robot with the abilities of fire recognition and tracking, nozzle selection, position and attitude control, and fire fighting was developed and is discussed in this paper. The test and evaluation results of this robot showed the possibility of real-size applications and the need for additional studies.
Study on Performance Prediction of Electric Propulsion System for Multirotor UAVs
정진석(Jinseok Jeong),변영섭(Youngseop Byun),송우진(Woojin Song),강범수(Beomsoo Kang) Korean Society for Precision Engineering 2016 한국정밀공학회지 Vol.33 No.6
This paper describes a study of performance prediction of an electric propulsion system for multirotor UAVs. The electric propulsion system consists of motors, propellers, batteries and speed controllers, and significantly affects performance characteristics of the platform. The performance of the electric propulsion system for multirotor UAVs was predicted using an analytical model derived from the characteristics of each component, operation experiments and statistical analyses. Ground performance tests and endurance flights were performed to verify the reliability of the proposed performance prediction method. A quadrotor platform was designed to demonstrate the parcel delivery service used in the endurance flight. From the result of verification tests, it was confirmed that the proposed method has a good agreement.