1

I used the geometry package but it doesn't seem to do anything to my document.

\documentclass{article}
\title{Competition Aircraft Energy Breakdown}
\author{Bill Chen}
\date{2018-11-21}
\usepackage{amsmath}
\usepackage{subcaption}
\usepackage{graphicx}
\begin{document}
\pagenumbering{gobble}
\maketitle
\newpage
\tableofcontents
\newpage
\pagenumbering{arabic}
\section{Introduction}
This report outlines the battery usage of the MUAS support and retrieval aircraft during the 2018 UAV Medical Challenge, and provides basic analysis on the performance of both aircraft. Suggestions are also made in aid of new designed for the next competition.
\subsection{Methodology}
The logs are retrieved from the aircraft in the BIN format and imported into MATLAB as a MAT file after being converted via Mission Planner. A MATLAB script is used to find the different phases of flight by checking against specific conditions, and separate the flight into phases and their respective time duration. The battery usage is then calculated in mAh for each flight phase.
\section{Retrieval Aircraft}
\subsection{Theoretical Retrieval Flight Phases}
\begin{figure}[!h]
    \includegraphics[width=\linewidth]{retrieval_phases.jpg}
    \caption{Theoretical Flight Phases for Retrieval Aircraft}
    \label{fig:theoretrievalphases}
\end{figure}
There are in total 18 different phases of flight for the retrieval aircraft, as shown in Figure 1. The purple labels indicate a quad phase, the green label plane phase, and the purple are the other phases including transitions and waiting at the remote site.
\newpage
\subsection{Phases from actual flight data}
\begin{figure}[!h]
    \includegraphics[width=\linewidth]{actual_ret_phases.png}
    \caption{Actual Flight Phases for Retrieval Aircraft}
    \label{fig:actretrievalphases}
\end{figure}
Comparing the actual mission profile against the theoretical profile shows that the two are similar in their general shape, with the actual profile exhibiting fluctuations in altitude during flight which is expected. Note that this altitude data is retrieved from AHR2, not BARO nor GPS directly.
\newpage
\subsection{Energy Usage Breakdown}
\subsubsection{Breakdown by individual phases}
\begin{figure}[!h]
    \includegraphics[width=\linewidth]{ret_phase_breakdown.png}
    \caption{Breakdown by individual phases}
    \label{fig:actretrievalphases}
\end{figure}
The two largest users of battery are the two cruise phases, using around 46\% of the overall energy consumption. The outbound cruise has a larger energy usage than the inbound due to the flight line deciding to cut short the return journey. The next two largest are the search and holding pattern. The search lasted 276 seconds, and the hold lasted 214 seconds. The next few largest energy usage occur during takeoff and landing at the remote site. These are higher likely due to the fact that the transition altittudes required for obstacle clearance is higher than at the base.
\newpage
\subsubsection{Breakdown by phase type}
\begin{figure}[!h]
    \begin{center}
    \includegraphics[width=0.7\linewidth]{ret_type.png}
    \end{center}
    \caption{Breakdown by types of phases}
    \label{fig:actretrievaltypes}
\end{figure}
Plane flight uses much more energy during the mission than quad flights, with the plane portion using three quarters of the energy used in the mission, as shown in Figure 4. 
\end{document}
  • Welcome to TeX.SX! How did you use the geometry package? If you provide the correct arguments to the package you will see a change. – TeXnician Nov 21 '18 at 9:32
2

You did not use geometry!

Depending on your needs you have to add some code like

\usepackage[%
  a4paper,
  margin=3.5cm,
  showframe     % <=================== visualise typing area and margins
]{geometry} % <=========================================================

to your preamble. This sets all margins to 3.5cm and uses paper a4. With option showframe the resulting typing area is visualized ...

So the complete code

\documentclass[draft]{article}

\usepackage[%
  a4paper,
  margin=3.5cm,
  showframe     % <=================== visualise typing area and margins
]{geometry} % <=========================================================
\usepackage{amsmath}
\usepackage{subcaption}
\usepackage{graphicx}


\title{Competition Aircraft Energy Breakdown}
\author{Bill Chen}
\date{2018-11-21}


\begin{document}
\pagenumbering{gobble}
\maketitle
\newpage
\tableofcontents
\newpage
\pagenumbering{arabic}
\section{Introduction}
This report outlines the battery usage of the MUAS support and retrieval aircraft during the 2018 UAV Medical Challenge, and provides basic analysis on the performance of both aircraft. Suggestions are also made in aid of new designed for the next competition.
\subsection{Methodology}
The logs are retrieved from the aircraft in the BIN format and imported into MATLAB as a MAT file after being converted via Mission Planner. A MATLAB script is used to find the different phases of flight by checking against specific conditions, and separate the flight into phases and their respective time duration. The battery usage is then calculated in mAh for each flight phase.
\section{Retrieval Aircraft}
\subsection{Theoretical Retrieval Flight Phases}
\begin{figure}[!h]
    \includegraphics[width=\linewidth]{retrieval_phases.jpg}
    \caption{Theoretical Flight Phases for Retrieval Aircraft}
    \label{fig:theoretrievalphases}
\end{figure}
There are in total 18 different phases of flight for the retrieval aircraft, as shown in Figure 1. The purple labels indicate a quad phase, the green label plane phase, and the purple are the other phases including transitions and waiting at the remote site.
\newpage
\subsection{Phases from actual flight data}
\begin{figure}[!h]
    \includegraphics[width=\linewidth]{actual_ret_phases.png}
    \caption{Actual Flight Phases for Retrieval Aircraft}
    \label{fig:actretrievalphases}
\end{figure}
Comparing the actual mission profile against the theoretical profile shows that the two are similar in their general shape, with the actual profile exhibiting fluctuations in altitude during flight which is expected. Note that this altitude data is retrieved from AHR2, not BARO nor GPS directly.
\newpage
\subsection{Energy Usage Breakdown}
\subsubsection{Breakdown by individual phases}
\begin{figure}[!h]
    \includegraphics[width=\linewidth]{ret_phase_breakdown.png}
    \caption{Breakdown by individual phases}
    \label{fig:actretrievalphases}
\end{figure}
The two largest users of battery are the two cruise phases, using around 46\% of the overall energy consumption. The outbound cruise has a larger energy usage than the inbound due to the flight line deciding to cut short the return journey. The next two largest are the search and holding pattern. The search lasted 276 seconds, and the hold lasted 214 seconds. The next few largest energy usage occur during takeoff and landing at the remote site. These are higher likely due to the fact that the transition altittudes required for obstacle clearance is higher than at the base.
\newpage
\subsubsection{Breakdown by phase type}
\begin{figure}[!h]
    \begin{center}
    \includegraphics[width=0.7\linewidth]{ret_type.png}
    \end{center}
    \caption{Breakdown by types of phases}
    \label{fig:actretrievaltypes}
\end{figure}
Plane flight uses much more energy during the mission than quad flights, with the plane portion using three quarters of the energy used in the mission, as shown in Figure 4. 
\end{document}

gives the following result:

enter image description here

Please see that I used class option draft because I do not have your images. Read documentation of package geometry for example with typing texdoc geometry on your terminal/console ...

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