Relative Armor Thickness Calculator

Formula

The formula to calculate the Effective Thickness (ET) is:

\[ \text{ET} = \frac{W}{\sin(a)} \]

Where:

\( \text{ET} \) is the Effective Thickness (inches).
\( W \) is the actual width (inches).
\( a \) is the angle of the armor (degrees).

What is Effective Thickness?

The Effective Thickness (ET) of armor refers to the thickness of armor material calculated based on the angle at which it is mounted. It represents the thickness the armor would effectively have if it were perpendicular to the impact direction. This calculation is crucial in assessing the protection provided by armor and is used in various applications, including military and vehicle armor design.

Example Calculation

Consider an example where:

Actual Width (W): 5 inches
Angle of Armor (a): 30 degrees

Using the formula to calculate the Effective Thickness:

\[ \text{ET} = \frac{5}{\sin(30^\circ)} = \frac{5}{0.5} = 10 \]

This means that the Effective Thickness for this example is 10 inches.