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Factor apportioning the armour bedding

Factor for apportioning the thermal capacitance of the armour bedding

Symbol
$p_{ab}$
Formulae
$\frac{1}{2\ln\left(\frac{D_{ar}}{D_{ab}-2t_{ab}}\right)}-\frac{1}{\left(\frac{D_{ar}}{D_{ab}-2t_{ab}}\right)^2-1}$
Related
$D_{ab}$
Diameter over armour bedding [mm]
$D_{ar}$
External diameter of armour [mm]
$t_{ab}$
Thickness of armour bedding [mm]
Used in
$C_{c3}$
Thermal capacitance, 3rd loop [J/(m.K)]
$C_{c4}$
Thermal capacitance, 4th loop [J/(m.K)]
$Q_{B,ab}$
Element B of two-part thermal circuit of armour bedding [J/(m.K)]
$Q_{B,j}$
Element B of two-part thermal circuit, jacket [J/(m.K)]