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Thickness of armour bedding

Symbol
$t_{ab}$
Unit
mm
Formulae
$t_{ab,1}+t_{ab,2}$
Related
$t_{ab,1}$
Thickness of 1st armour bedding [mm]
$t_{ab,2}$
Thickness of 2nd armour bedding [mm]
Used in
$A_{ab}$
Cross-sectional area of armour bedding [mm$^2$]
$A_j$
Cross-sectional area of jacket [mm$^2$]
$D_{ab}$
Diameter over armour bedding [mm]
$D_e$
External diameter of object [mm]
$D_{eq}$
Equivalent diameter of a group of round objects [mm]
$p_{ab}$
Factor apportioning the armour bedding
$\rho_{ab}$
Thermal resistivity of armour bedding [K.m/W]
$\sigma_{ab}$
Volumetric heat capacity of armour bedding [J/(K.m$^3$)]
$t_2$
Thickness of bedding under armour [mm]