Table 2.

Sustained performance parameters. In all expressions, an overbar denotes a reduced speed: $\overline{u}=u\text{/}w$,${\overline{v}}_{min}(\gamma )=v_{min}(\gamma )\text{/}w$, ${\overline{v}}_{+}=v_{+}\text{/}w$ and ${\overline{v}}_{\ast }=v_{\ast }\text{/}w$. Reference equations for the first row are (3.34), (3.20), (3.25), (3.19), (3.28) and (3.27), respectively.

type	${\overline{v}}_{min}(0)$	${\overline{v}}_{+}$	$P_{+}\text{/}{P}_0$	${\overline{v}}_{\ast }$	$P_{\ast }\text{/}{P}_0$	$C_{\ast }w\text{/}{P}_0$
exact	$\overline{u}{\left({\displaystyle \frac{C_{D0}}{K{C}_{L,max}^2}}\right)}^{1/4}$	${\displaystyle \frac{\overline{u}}{3^{1/4}}}$	$1+{\displaystyle \frac{2{\overline{u}}^3}{3^{3/4}}}$	solution of ${\overline{v}}_{\ast }-{\overline{v}}_{\ast }^4+{\overline{u}}^4=0$	$1+{\displaystyle \frac{{\overline{v}}_{\ast }^3}{2}}+{\displaystyle \frac{{\overline{u}}^4}{2{\overline{v}}_{\ast }}}$	${\displaystyle \frac{1}{{\overline{v}}_{\ast }}}+{\displaystyle \frac{{\overline{v}}_{\ast }^2}{2}}+{\displaystyle \frac{{\overline{u}}^4}{2{\overline{v}}_{\ast }^2}}$
series, $\overline{u}\ll 1$				$1+{\displaystyle \frac{1^{\phantom{\int }}}{3_{\phantom{\int }}}}{\overline{u}}^4+\cdots$	${\displaystyle \frac{3}{2}}+{\overline{u}}^4+\cdots$	${\displaystyle \frac{3}{2}}+{\displaystyle \frac{1}{2}}{\overline{u}}^4+\cdots$
series, $\overline{u}\gg 1$				$\overline{u}+{\displaystyle \frac{1^{\phantom{\int }}}{4_{\phantom{\int }}{\overline{u}}^2}}+\cdots$	${\overline{u}}^3+{\displaystyle \frac{5}{4}}+\cdots$	${\overline{u}}^2+{\displaystyle \frac{1}{\overline{u}}}+\cdots$
best fit, $\overline{u}\in (0,\mathrm{\infty })$				${\displaystyle \frac{{6+3{\overline{u}}^{11/3}+8{\overline{u}}^7}^{\phantom{\int }}}{{6+8{\overline{u}}^6}_{\phantom{\int }}}}$	${\displaystyle \frac{6+10{\overline{u}}^{11/3}+5{\overline{u}}^7}{4+5{\overline{u}}^4}}$	${\displaystyle \frac{9+5{\overline{u}}^{11/3}+3{\overline{u}}^7}{6+3{\overline{u}}^5}}$
best fit, $\overline{u}\in (0,1.3)$				$1+{\displaystyle \frac{3^{\phantom{\int }}}{{14}_{\phantom{\int }}}}{\overline{u}}^3$	${\displaystyle \frac{3}{2}}+{\displaystyle \frac{4}{5}}{\overline{u}}^{7/2}$	${\displaystyle \frac{3}{2}}+{\displaystyle \frac{2}{5}}{\overline{u}}^3$