Commit ahead of weekly meeting.

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diff --git a/background.tex b/background.tex
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@@ -41,6 +41,9 @@ Turboshaft style engines are most often used in helicopters, and are characteriz
 \end{figure}
 \section{Generator Theory}
 \section{Battery Theory}
+\begin{equation}\label{battC}
+	I_{Battery}=\frac{V_{Battery}-V_{Supply}}{R_{Battery}}
+\end{equation}
 \section{Turboelectric Theory}
 NASA defines turboelectric systems as being at the least a turboshaft coupled to an electric generator, which power electric motors which then drive propellers. This configuration can be further categorized in accordance with whether the turbine engine drives a load directly.
 These systems, refered to as "Partial Turbo Electric" \cite{nasa_prop_overview}, employ the use of either turbofans or turboprops in addition to being coupled to electric generators.