http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
저층 트롤에서 3차원 위치를 이용한 만곡형 전개판의 영각 추정
고광수 ( Gwang Su Go ),조봉곤 ( Bong Kon Chol ),배재현 ( Jae Hyun Bae ),조성옥 ( Seong Ok Cho ),원성재 ( Sung Jae Won ),윤홍근 ( Hong Keun Yoon ),박해훈 ( Hae Hoon Park ) 한국수산해양기술학회 2015 수산해양기술연구 Vol.51 No.1
The angle of attack of a cambered otter board in a bottom trawl was estimated using a three-dimensional semi-analytic treatment of a towing cable (warp) system that was applied to the field experiments of a bottom trawl obtained by the Scanmar system. The equilibrium condition of the horizontal component and vertical component of forces was used to the three forces acting on the otter board in the horizontal plane. Those forces were the force on the warp at the bracket, hydrodynamic lift and drag forces on the otter board and the force on the hand rope attached just behind the otter board. Also the equilibrium of moment about the front edge of the otter board was used to find out the angle of attack of the cambered otter board. When the warp length was 120m and 180m long and the towing speed was between 1.23 and 1.90 m/s, the estimated angle of attack of the cambered otter board was ranged between 26.1° and 29.6°, respectively, though the maximum lift force was at the angle of attack 22.6°. The angle of attack of the otter board was tended to increase weakly with the longer length of warp (180 m) at the same towing speed in the experiment.