diff --git a/OpenHPL/Waterway/Gate.mo b/OpenHPL/Waterway/Gate.mo
index bfe3d86..ba2b9a8 100644
--- a/OpenHPL/Waterway/Gate.mo
+++ b/OpenHPL/Waterway/Gate.mo
@@ -83,15 +83,15 @@ With
$$ \\psi_{90^\\circ}= \\frac{1}{1+0.64\\cdot \\sqrt{1-(a/h_0)^2}} \\tag{8.25}$$
Contraction coefficient radial gate (for \\(a/h_0 \\rightarrow 0\\))
$$ \\psi_0(\\alpha)= 1.3 -0.8\\cdot\\sqrt{1-\\left(\\frac{\\alpha -205^\\circ}{220^\\circ}\\right)^2} \\tag{8.25a}$$
- With the edge angle \\(\\alpha\\) of the gate With the edge angle \\(\\alpha\\) of the gate
$$ \\alpha = \\left( \\frac{\\pi}{2} - \\arcsin(\\frac{h_h-a}{r})\\right) \\cdot \\frac{180^\\circ}{\\pi} $$
- \\(a \\ldots\\) Vertical gate opening
- \\(h_h \\ldots\\) Height of the hinge above gate bottom\"
- \\(r \\ldots\\) Radius of the gate arm
-
+
Backed-up discharge