# yaw ```rust ewn_x_r_ou = cross_product(&rt_hs.ang_vel_en, &rt_hs.r_ou); rt_hs.plin_vel_eu = rt_hs.plin_vel_eo.clone(); for i in 0..NPN{ tmp_vec0 = cross_product(&rt_hs.p_ang_vel_en.slice(s![PN[i] - 1, 0, ..]).to_owned(), &rt_hs.r_ou); tmp_vec1 = cross_product(&rt_hs.p_ang_vel_en.slice(s![PN[i] - 1, 0, ..]).to_owned(), &ewn_x_r_ou); tmp_vec2 = cross_product(&rt_hs.p_ang_vel_en.slice(s![PN[i] - 1, 1, ..]).to_owned(), &rt_hs.r_ou); let update_value = tmp_vec0 + rt_hs.plin_vel_eu.slice(s![PN[i] - 1, 0, ..]); // Partial linear velocity (and its 1st time derivative) of the nacelle center of mass (point U) in the inertia frame (body E for earth) [-] rt_hs.plin_vel_eu.slice_mut(s![PN[i] - 1, 0, ..]).assign(&update_value); let update_value = tmp_vec1 + tmp_vec2 + rt_hs.plin_vel_eu.slice(s![PN[i] - 1, 1, ..]); rt_hs.plin_vel_eu.slice_mut(s![PN[i] - 1, 1, ..]).assign(&update_value); // Linear acceleration of the nacelle center of mass (point U) in the inertia frame (body E for earth) (excluding QD2T components) [-] rt_hs.lin_acc_eut = rt_hs.lin_acc_eut.clone() + x.qdt[PN[i] as usize - 1] * rt_hs.plin_vel_eu.slice(s![PN[i] - 1, 1, ..]).to_owned();     } ``` plin_vel_eu Partial linear velocity (and its 1st time derivative) of the nacelle center of mass (point U) in the inertia frame (body E for earth) [-] lin_acc_eut Linear acceleration of the nacelle center of mass (point U) in the inertia frame (body E for earth) (excluding QD2T components) [-]