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Introduction: Doing Damage
The two basic types of weapon systems are Turrets and Launchers. Turrets fire a stream of damage (projectiles, charges, laser beams) that travels in a straight line out from the turret as the turret moves to track the target. Launchers fire self-propelled bundles of damage (rocket, missile, torpedo) that chase down the target. (There are exceptions, but most weapons follow one of these patterns.)
In each case, the actual damage done to the target depends on a number of factors. You can read the details in these two articles: Turret Damage / Missile Damage - but for now it is enough to recognize that the two weapons systems do damage in different ways. Given that the target is within range of the weapon, then the final damage to the target depends on:
| Launcher | Turret |
|---|---|
| Basic damage amount | Basic damage interval |
| Signature radius of target | Transversal speed |
| Velocity of target | Turret tracking |
| Explosion radius of missile | Turret signature resolution |
| Explosion velocity of missile | Target signature radius |
| Damage reduction factor | Turret optimal range |
| Turret range falloff |
The difference, in simple terms, is that launchers will always "hit", but the damage done will vary depending on the size of the target and the speed of the explosion. On the other hand, turrets may miss the target, but a hit will always do its basic (somewhat variable) amount of damage.
It may seem that a 100% chance to hit any target within range is a significant advantage, however this is balanced by other factors, including especially the firing speed of the weapon and the travel time of the damage bundle. In general, launched weapons fire more slowly and take more time to strike their targets, thus leaving their ships more open to retaliation. In any case, you can rest assured that neither type of weapons system has an advantage over the other in and of itself. The advantages arise from the ship bonuses, ship fittings, and pilot skills and experience.
The remainder of this article will deal with the mechanics and characteristics of launcher based weapons systems. Damage done will be compared in absolute terms. For a very detailed explanation of how the damage of an individual hit is created when the weapon hits its target, please refer to the article on Missile Damage.
Note that launcher based damage bundles are often called "missiles", and that this term can refer to any of rockets, missiles, torpedos and bombs (even though bombs are not fired from launchers).
Missile Targeting, Range and Speed
A missile does not so much hit a ship as explode near it. When a missile crosses the signature radius of its target, it blows up. The speed at which this explosion grows and the maximum size of the explosion determine the amount of damage done to the target.
EVE uses a mathematical equation to compute the precise amount of damage that the explosion does to the ship. The details of what happens when a missile hits are somewhat complicated and are explained in Missile Damage.
When fired, a missile will leave the launcher and proceed at its best speed until it runs out of fuel. If it encounters the target during that time, it will explode - otherwise it will vanish. The maximum distance that a missile will travel can be found by multiplying the speed of the missile by the number of seconds that it's fuel will last.
Distance = Speed x Seconds of Fuel
For example:
- A Light Missile has a flight time of 5 seconds at a speed of 3750 m/s. The maximum distance it can travel is 5 x 3750 = 18,750 m.
- A torpedo has a flight time of 6 seconds at a speed of 1500 m/s. The maximum distance it can travel is 6 x 1500 = 9,000 m.
Although the terms "range" and "distance" are often used interchangeably, technically, the range answers the question of whether the missile can reach its target: is it "in" or "out" of range. If the target is stationary, then the maximum distance will be the missile's range. Normally, however, the target is moving, and the range depends on this motion.
If the target is moving directly away from the missile, then it will take the missile longer to reach the target than it would a stationary one. In fact, if the target is moving fast enough, the missile may not be able to reach it at all - in this case, the target would be considered "out of range." Note that the target does not have to be moving faster than the missile ... just fast enough to stay ahead of the missile until it runs out of fuel.
If the target is moving directly at the missile, then the missile will reach it much faster than it would reach a stationary target. In this case, the target may be "in range" even when it seems to far away to hit.
Launcher Types
Each launcher class can launch multiple types of missiles of that class. Generally, the missile types vary the damage type, flight time, and other tactical characteristics.
For example, a xxxxx launcher can fire 3 types of missiles:
Launchers have various characteristics, including such as firing rate, ...
