SimplePlanes Custom Unit System

    <SI>
      <LongDistance name="kilometers" abbreviation="km" factor="0.001" />
      <ShortDistance name="meters" abbreviation="m" factor="1" />
      <TinyDistance name="millimeters" abbreviation="mm" factor="0.001" />
      <Speed name="meters per second" abbreviation="m/s" factor="1" />
      <Mass name="kilograms" abbreviation="kg" factor="1" />
      <Force name="newtons" abbreviation="N" factor="1" />
      <Volume name="liters" abbreviation="L" factor="1" />
      <Area name="meters squared" abbreviation="m^2" factor="1" />
      <WingLoading name="kilograms per meter squared" abbreviation="kg/m^2" factor="1" />
    </SI>