## 3 Results
### Aerodynamic Forces and Moments
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{\begin{tabular}{c} **Wind Speed** \\ **(m/s)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Total Lift (N)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Total Drag** \\ **(N)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Pitch Moment** \\ **(N-m)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **Yaw Force** \\ **(N)** \\ \end{tabular} } & \multirow{2}{*}{\
\begin{tabular}{c} **Yaw Moment** \\ **(N-m)** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **Roll Moment** \\ **(N-m)** \\ \end{tabular} } \\ \hline
0 & 297.6 & 151.04 & \(-\)109.34 & 0 & 0 & 0 \\
1.5 & 298.15 & 151.54 & \(-\)109.47 & 1.05 & 0.25 & \(-\)0.31 \\
3 & 299.79 & 153.01 & \(-\)109.86 & 4.22 & 1.01 & \(-\)1.25 \\
4.5 & 302.53 & 155.48 & \(-\)110.51 & 9.48 & 2.27 & \(-\)2.80 \\
7.5 & 311.29 & 163.36 & \(-\)112.59 & 26.31 & 6.32 & \(-\)7.80 \\
10.5 & 324.43 & 175.2 & \(-\)115.70 & 51.58 & 12.38 & \(-\)15.23 \\
13.5 & 341.96 & 190.98 & \(-\)119.86 & 85.27 & 20.46 & \(-\)25.27 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Results of aerodynamic characteristics under different lateral wind conditions. The mechanical characteristics of the multi-body system under different lateral wind speeds are depicted in Figure 4. It can be observed that, influenced by the lateral wind, the multi-body system exhibits a significant yaw force, yaw moment, and roll moment. The magnitudes of these forces and moments increase in a parabolic curve fashion as the wind speed increases. At a wind speed of 1.5 m/s, the values of the yaw force, yaw moment, and roll moment are negligible. However, when the wind speed reaches 7.5 m/s, the yaw force is approximately 26.3 N, the yaw moment is approximately 6.32 N-m, and the roll moment is approximately 7.8 N-m. Additionally, the lateral wind also affects the lift, drag, and pitch moment of the multi-body system and the athlete. Similar to the forces, the magnitudes of these forces and moments increase in a parabolic curve fashion as the wind speed increases. At a wind speed of 1.5 m/s, the changes in lift, drag, and pitch moment can be considered negligible. However, when the wind speed reaches 7.5 m/s, the total lift increases by approximately 13.7 N, the total drag increases by approximately 12.3 N, and the pitch moment increases by approximately 3.25 N-m.  
Figure 4: Change curves of aerodynamic characteristics under different lateral wind conditions. **(a)** The changes with different lateral wind speeds in total lift, total drag, pitch moment, athlete’s lift, athlete’s drag, and athlete’s pitch moment. **(b)** The changes with different lateral wind speeds in yaw force, yaw moment, roll moment, athlete’s yaw force, athlete’s yaw moment, and athlete’s roll moment. \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Roll Rotation** & **Total Lift** & **Total Lift-to-Drag** & **Total Lift-to-Drag** & **Pitch Moment** & **Yaw Force** & **Yaw Moment** & **Roll Moment** \\
**Angle (\({}^{\circ}\))** & **(N)** & **Drag (N)** & **Ratio** & **(N-m)** & **(N)** & **(N-m)** & **(N-m)** \\ \hline
0 & 297.60 & 151.04 & 1.970 & \(-\)109.34 & 0.00 & 0.00 & 0.00 \\
2.5 & 295.07 & 150.65 & 1.957 & \(-\)107.92 & \(-\)12.33 & \(-\)2.91 & 2.04 \\
5 & 291.19 & 149.32 & 1.950 & \(-\)105.53 & \(-\)28.72 & \(-\)6.47 & 4.53 \\
7.5 & 285.46 & 147.27 & 1.938 & \(-\)102.43 & \(-\)42.07 & \(-\)11.17 & 7.82 \\
10 & 277.25 & 145.54 & 1.905 & \(-\)99.14 & \(-\)54.08 & \(-\)16.93 & 11.85 \\
12.5 & 262.82 & 142.88 & 1.839 & \(-\)94.68 & \(-\)69.81 & \(-\)25.45 & 17.81 \\
15 & 245.78 & 139.13 & 1.766 & \(-\)89.83 & \(-\)83.90 & \(-\)37.77 & 23.59 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Results of aerodynamic characteristics under different roll rotation angles.