WUTJSG舵系计算书.doc

WUT481-230-01JSG 舵系计算书 90m多用途甲板运输船 90m Multi-purpose Deck Transport Ship TECHNICAL DESIGN SIGN NUM. DESCRIPTION SIG. DAT E 舵系计算书 Rudder System Calculation WUT481-230-01JSGDESIGNED TYPED CHECKED CHE.OF.STD AREA TOTAL 18 PAGE 1 VERIFIED East China Ship DesignResearch Institute Of Wuhan University of Technology APPROVED DATE TEL:0576 FAX:0576  Rudder System Calculation WUT481-230-01JSG Page2 本船采用两具双支点流线型平衡舵，其水动力特性参照 NACA0018 资料计算,有关舵系零部 件的结构尺寸按 CCS《国内航行海船建造规范》（2006）及其修改通报（ 2010）的相关要求进行 强度设计计算。 The vessel shall be installed two sets of double fulcrum balanced streamline rudders; hydrodynamic characteristics reference the NACA0018 available data. The parts of rudder struct ure size strength design by The Rules and Regulations for the construction of domestic sea g oing steel ships (2006) issued by CCS and amend bulletin (2010). 1 基本设计参数 Principal Particulars 1.1 船舶主要数据 Ship Particulars 水线长 Length Lwl= 86.45 m 设计吃水 Draft T= 4.55m 设计航速 Design Speed V= 10.44kn 1.2 舵几何要素 Rudder Particulars 舵数量 Numbers of rudder m=2 平均舵宽 The average width of rudder c= 2 m 平均舵高 The average length of rudder b=2.9m 舵 面 积 Rudder area A=5.8m2 总舵面积 The total rudder area ΣA=11.6m2 舵面积比 Rudder area ratio χ=2.949 % 舵展弦比 Rudder aspect ratio λt=1.45 平衡系数 Balance coefficient β=0.25 舵厚度比 Rudder thickness ratio t=0.180 舵的平衡面积 Rudder balance area Af =1.45m2 舵杆材料 ReH（船体结构用锻钢） Rudder stock material (forged steel for hull structure) 200N/mm2 2 舵力（规范 §3.1.2）Rudder force（Rules §3.1.2） 2.1 正车时的舵力 Forward rudder force F正=132×K1×K2×K3×A×Vd 2=105558.558N 式中 Where：  Rudder System Calculation WUT481-230-01JSG Page3 系数 Coefficient K1=（λt+2）/3=1.15 系数 Coefficient K2=1.1 系数 Coefficient K3=1 舵面积 Rudder area A=5.8m2 设计航速 Design Speed Vd=V=10.44kn 2.2 倒车时的舵力 Back rudder force F倒=132×K1×K2×K3×A×Vd 2=19192.456N 式中 Where： 系数 Coefficient K1、K3同上 ditto §2.1，系数 Coefficient K2=0.8 倒车航速 Back Design Speed V倒=0.5V=5.22kn 3 舵杆扭矩（规范 §3.1.3）Rudder stock torque （Rules §