Tham khảo tài liệu 'intro to naval architecture 3e episode 13', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 350 .APPENDIX UNITS NOTATION AND SOURCES t T time in general thickness thrust deduction factor draught time for a complete cycle thrust period u V w Ư V w w X y z X Y z a p Ô e p velocity components in direction of X- y- z-axes linear velocity weight density Taylor wake fraction weight in general external load body axes and Cartesian co-ordinates force components on body angular acceleration angle of attack leeway or drift angle angle in general deflection permanent set angle of pitch trim coefficient of dynamic viscosity V p ự tì V V A o A Poisson s ratio coefficient of kinematic viscosity mass density angle of roll heel list angular velocity circular frequency volume displacement force efficiency in general cavitation number direct stress tuning factor Subscripts Much of the notation above is qualified by a subscript in particular applications. The subscripts used are B block D developed area drag delivered power E effective power encounter waves F frictional resistance Froude H hull L longitudinal lift M midship section o open water propeller OA overall p longitudinal prismatic pp between perpendiculars Q torque R residuary resistance relative rotative efficiency rudder s shaft T transverse total thrust VP vertical prismatic APPENDIX UNITS NOTATION AND SOURCES 351 w waterline waterplane wave-making WP waterplane y yield stress pitching trimming p rolling heeling à wave elevation SOURCES Learned societies Many references are to the papers of learned societies published either in their ưansactions or in reports of conferences. Membership of a learned society is recommended as a means of keeping abreast of the many new developments in the discipline as they occur and also for the opportunity to meet like-minded people. Additionally there is the status associated with membership of a recognized body with the possibility in the UK of being able to register as a member of the Engineering Council. Corresponding bodies exist in other countries. It is likely that such .
