【摘要】 建立了全垫升气垫船的4自由度操纵运动数学模型,用风洞试验来测量空气动力、螺旋桨力和舵力,用水平面平面运动机构进行约束模型试验来测量水动力,试验中变化了速度、漂角、摇首角速度和横倾角.对操纵性进行模拟计算的结果表明:全垫升气垫船的回转轨迹是一条逐渐向内收缩的螺旋线;操固定舵角回转是比较危险的,在舵角较大时就容易产生甩尾;风对回转的影响很大,在顺风速度很大时气垫船不能转向.更多还原

【Abstract】 A four degree-of-freedom mathematical model was established to investigate the maneuverability of an air cushion vehicle(ACV).The forces of aerodynamic,propellers and rudders were obtained by wind tunnel experiments.A series of constrained model experiments with Horizontal-Planar-Motion-Mechanism(HPMM) were conducted to determine the hydrodynamics and the experiments were conducted over a wide range of operating conditions such as speed,drift angle,yawing angular speed and roll angle.A computer program was used to simulate the ACV turn capability and the results show that the ACV’s turn trajectory is like a spiral curve with constriction radius.It is dangerous for the ACV to turn with big fixed rudder angles because of yaw instability or whipping.The wind influences much on the ACV’s turning ability.No turn can be accomplished for fast tailwind.更多还原