Fig. 5.

Swimming properties of a 5-7-5 swimmer with cilia beat in the longitudinal direction (${\theta }_r=0$), for various phase lags $\chi$ and latitudinal modes $k_{\phi }$. a Average swimming velocity $<v_n>$. b Velocity fluctuations $\sqrt{<{(v_n-<v_n>)}^2>}$ around the average. c Rotational velocity ${\mathrm{\Omega }}_n$ around the main body axis. d Temporal auto-correlation function $<\mathbf{n}(t)·\mathbf{n}(t+\tau ){>}_t$ for swimmers with phase lag $\chi =-{50}^{\circ }$ indicated by red stripe in (a-c). The dashed lines are fits to the auto-correlation function, Eq. (6) (see text). Note that in (b), the curves for $k_{\phi }=1$ and $k_{\phi }=2$ are numerically identical to the curve for $k_{\phi }=3$ and are therefore not visible