Editing VB-Missiles (section)

===Missile Engines===
Missile Engines have to be designed separately and researched before you can use them, and a single missile can have multiple engines (of the same type).
The four elements of missile engine design are described below. 

'''Engine Technology''': Exactly as ship-based engines. For example, the Magneto-plasma Drive has a rating of 16 power per hull space, so a Magneto-plasma missile engine of 1 MSP would provide 16/20 = 0.8 power. 

'''Fuel Consumption''': The base fuel consumption of a missile engine is five litres per Engine Power Hour (which is one point of engine power for one hour) and can be improved through research. So a max size missile engine (5 MSP) with 4 power and a racial fuel consumption technology of 0.6 litres per engine power hour would use 12 litres per hour. This is higher than shipboard engines as missile engines are designed for single use and therefore long-term fuel efficiency is a low priority in their design. They are also solid-fuelled for easy storage, which is less fuel efficient than liquid-fuelled ship-based engines.

'''Engine Size''': Missile engines can range in size from 0.1 MSP to 5 MSP. Smaller missile engines suffer a penalty to fuel consumption. For example, the following sizes of missile engine have the listed fuel consumption per Engine Power:

5 MSP    x1.00
3 MSP    x1.42
1 MSP    x3.00
0.5 MSP  x4.82
0.1 MSP  x14.47

'''Power / Efficiency Modifiers''': Missile engines use the same principle as ship engines and use the same tech lines (Max Engine Power Modifier and Min Engine Power Modifier). However, the upper end of the range is doubled for missile engines. So if the Max Engine Power tech is x1.75, missile engines can use up to x3.50. The rationale is that these are designed for single use, unmanned craft and therefore have significantly different engineering requirements, such as no radiation shielding or maintenance access requirements. As with ship-based engines, increasing power has a significant effect on fuel efficiency and decreasing power can provide huge savings in fuel efficiency. As the missile modifier is double that of ships, power can be increased by up to six times normal and decreased to 10% of normal if you have the prerequisite techs. Each engine power modifier percentage is accompanied by a fuel consumption modifier, based on the formula Fuel Efficiency Modifier = Engine Power Modifier ^ 2.5

For example, a 1 MSP missile engine with a x3.00 engine power modifier would have a x15.59 fuel consumption modifier for the engine power modifier and a x3.00 fuel consumption modifier (x3) for the size of the engine, which gives a total modifier of x46.77.

A 0.5 MSP missile engine with a x5.00 engine power modifier would have a x55.90 fuel consumption modifier for the power modifier and a x4.82 fuel consumption modifier for the engine size. 

Here are the three examples of 1 MSP magneto-plasma drive missile engines, using x1 power, x3 power and x6 power, with a racial base fuel consumption of 0.6 Litres per Engine Power Hour

;0.8 EP Magneto-plasma Drive
 Engine Power: 0.8      Fuel Use Per Hour: 7.2 Litres
 Fuel Consumption per Engine Power Hour: 9.006 Litres
 Engine Size: 1 MSP      Cost: 0.2
 Development Cost for Project: 40RP

;2.4 EP Magneto-plasma Drive
 Engine Power: 2.4      Fuel Use Per Hour: 336.92 Litres
 Fuel Consumption per Engine Power Hour: 140.385 Litres
 Engine Size: 1 MSP      Cost: 0.6
 Development Cost for Project: 120RP

;4.8 EP Magneto-plasma Drive
 Engine Power: 4.8      Fuel Use Per Hour: 3811.86 Litres
 Fuel Consumption per Engine Power Hour: 794.137 Litres
 Engine Size: 1 MSP      Cost: 1.2
 Development Cost for Project: 240RP