A mathematical model for the trajectory of the jet axis was proposed on the principle ofmomentum conservation.
以动量守恒原理为基础，建立了侧吹射流轴轨迹的数学模型。
2
Based on the traditional Momentum-Blade Element theory, an improved method of aerodynamic calculation about the horizontal axis wind turbine in yaw or in pitch-up is presented in this paper.
本文将动量-叶素理论推广应用于计算水平轴风车叶轮有侧偏角或上仰角时的气动力。
3
Conservation of angular momentum, moment of inertia, parallel axis theorem.