Editing Engine (section)

==Examples==
Let's say you have researched Magneto-plasma Drive Tech and Fuel Consumption x 0.4. 

====Commercial engines====
The minimum size for commercial engines is 25 [[HS]] (= 1250 tons) and the power modifier needs to be -50% (or less). If you have, say, 60% fuel consumption rate researched, it looks like this:

<code>Commercial Magneto-plasma Drive  EP200.00<br>
Engine Power 200.00      Fuel Use Per Hour 13.42 Litres<br>
Fuel Consumption per Engine Power Hour 0.067 Litres <br>
Size 25 HS  (1,250 tons)      HTK 5<br>
Thermal Signature 200.0      Explosion Chance 5%      Max Explosion Size 50<br>
Cost 50.0000      Crew 12<br>
Commercial Engine<br>
Development Cost 500 RP<br>
Materials Required<br>
Gallicite  50.0000</code>

Compare this to an engine that's twice the size (50 HS = 2500 tons) and twice the power:

<code>Commercial Magneto-plasma Drive  EP400.00<br>
Engine Power 400.00      Fuel Use Per Hour 18.97 Litres<br>
Fuel Consumption per Engine Power Hour 0.047 Litres <br>
Size 50 HS  (2,500 tons)      HTK 7<br>
Thermal Signature 400.0      Explosion Chance 5%      Max Explosion Size 100<br>
Cost 100.0000      Crew 25<br>
Commercial Engine<br>
Development Cost 707 RP<br>
Materials Required<br>
Gallicite  100.0000</code>

Fuel use is only 19 litres per hour, compared to 27 if you had installed two 200EP engines instead, for the same power output. Development (i.e. research) cost to design this engine is higher, though. Size 50 is the maximum in VB6, but you can keep increasing the size further in C#, up to a maximum of 20,000 tons (400 HS), with suitable research into Maximum Engine Size techs. 

====Military engines====
Now you decide to design a compact but powerful standard engine for your medium-sized warships. You intend to stick two of these on a frigate, three on a destroyer and so on. 15 HS (= 750 tons) sounds like a good size and you select a power modifier of 175% because you need that extra bit of ''wroooom'':

<code>Magneto-plasma Drive  EP420.00<br>
Engine Power 420.00      Fuel Use Per Hour 833.59 Litres<br>
Fuel Consumption per Engine Power Hour 1.985 Litres<br> 
Size 15.00 HS  (750 tons)      HTK 3<br>
Thermal Signature 420.0      Explosion Chance 17%      Max Explosion Size 105<br>
Cost 210.00      Crew 26<br>
Military Engine<br>
Development Cost 1024 RP<br>
Materials Required<br>
Gallicite  210.00</code>

Research costs are significant, and fuel use is ''forty-four times'' higher than for the commercial engine of similar power. You can save a lot of weight with military engines, but all that engine power severely limits your range. Perhaps your destroyers would do better with a single, large engine instead? Let's see:

<code>Magneto-plasma Drive  EP1260.00<br>
Engine Power 1260.00      Fuel Use Per Hour 1443.81 Litres<br>
Fuel Consumption per Engine Power Hour 1.146 Litres <br>
Size 45 HS  (2,250 tons)      HTK 6<br>
Thermal Signature 1260.0      Explosion Chance 17%      Max Explosion Size 315<br>
Cost 630.00      Crew 79<br>
Military Engine<br>
Development Cost 1774 RP<br>
Materials Required<br>
Gallicite  630.00</code>

It has three times the power of the 420EP engine, but research costs, which scale with engine size, are now getting pretty high (especially since you'll need to research different models for other classes). Having only one engine means being more vulnerable to lucky enemy hits, too. Fuel use compared to three smaller engines is about 42% lower, though.