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Tracking speed vs angular or transversal

I have heard many players talk about "transversal speed" as a measure of how fast a target is relative to one's turrets. They suggest using transversal speed to gauge this, which is in m/s. Yet, the attributes of turrets list tracking speed in rad/s, which is the angular velocity at which a target is rotating around your ship. Also angular velocity as given in the overview is rated in rad/s, which directly match the units of the tracking speed. I personally use angular velocity, yet I hear very few players mention this. Can anyone shed light on this please?

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5 answers

  • 5

camon bear [ Editor ]

A lot of players find having rad/s takes up too much space on there overviews.

Some players have enough experience to know based on speed and distance if they can hit the target or not, some just hope. Other players have printed out a grid of distance against velocity for some/all of their ships.

If done in Excel or similar, they can divide a by b and then fill all cells less than their guns angular velocity green, those higher in red and have a ready reckoner.

If however you have the screen real estate to accomadate the wider angular velocity column, I'd recommend that, which is what I do.

There is almost nothing that an EvE player won't print out if he thinks it will give him an edge!

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harlock
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There is almost nothing that an EvE player won’t print out if he thinks it will give him an edge!

Quoted for posterity !!!

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  • 4

werner lucifer [ Editor ]

The transversal speed is standard in the overview. I guess it takes people a while to add angular velocity. It might be a reason for it not to be that common. I think angular velocity was added later to the game also?

alt text
Angular velocity is also what the tracking speed is compared with (see my post here if you're interested in how). Why then would I want to know the transversal speed? The simple answer is because it's affects angular velocity. As do range to the target. Your normal speed and direction affects transversal speed. If you know these than it's easier to know what you are going to do in order to affect angular velocity, you can choose your method for controlling the flight.

Also knowing all this info gives you an idea about how the fight is done; e.g. if you got transversal and the ships normal speed you got a better idea about where the ship is heading. And maybe what the enemy is thinking. Info = mind reading in space -> mindfck in space.

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upsideyourhead
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Good. Took a while for someone to put the equation up here. Also, you had it right this first time. It doesn’t need the arctan. See, there are (2 * pi) radians in the R-circle, and a circumference of (2piR). So, the angular rate in the theta direction is the angle per unit time. Or, you can just write it as the total angle times the velocity divided by the total circumference, which is just 2pi(v{trans} / (2pir)), or just vtrans/r.

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  • 1

rob_26

"High Angular velocity & Low transversal= they are coming or going away from you in a straight line very quickly

"Low Angular Velocity & High Transversal=means that they are orbiting you very quickly and more than likely will not be able to inflict a lot of damage.""

i believe these two quotes are wrong,

high angular means they are orbiting you, simple as that higher the angular more circles they do around u given the same time.

High angular and low transversal simply means they are close to you, while low angular and high transversal means they are far away.

spotting how these are changing might give u a clue as their intentions, if angular is increasing but transveral is staying the same or decreasing, means they are getting close to u, and starting their obit.

if angular is lowering, and transfersal is increasing, it means they are trying to gtfo.

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  • 0

mymindisglowing [ Editor ]

The truth is, it's a matter of style with some people preferring one read or the other due to the complexity and meaning of either. Personally, I have both on my overhead. But, for example, I know that I generally want to keep my transversal reading low as possible, as a rule of thumb. I don't really feel the need to struggle with more than that basic principal. Partially, this is because I'm weak in the maths department, and don't want to mess with the numbers. Partly, it's b/c I'm not elite enough to where doing so might matter more.

If you want a deeper understanding of both transversal and angular velocity, you can find an excellent discussion at http://www.eve-search.com/thread/1240094/page/1, which includes the following quoted:

"There are some relations between angular and transversal velocities that can tell you something:

"High Angular velocity & Low transversal= they are coming or going away from you in a straight line very quickly

"Low angular velocity & low transversal= They are stopped or are/moving very slowly towards/away from you in a straight line

"High angular velocity & High Transversal=a pilot who is more than likely is manually approaching you and is lowering incoming damage because you can't track him or they are trying to GTFO and need to reduce incoming DPS through speed tanking your guns.

"Low Angular Velocity & High Transversal=means that they are orbiting you very quickly and more than likely will not be able to inflict a lot of damage."

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  • 0

marbledaemon

Correction: AngularVelocity = arctan (TransversalVelocity / RangeToTarget)

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upsideyourhead
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I think you had it right the first time.

werner lucifer
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That seems logical. To calculate the angle in the triangle that is created you would have to use arctan. I did some experiments in EVE though and for distances far away the formulas produced quite equal results. For close distances the formula with arctan could generate a fault over 10% while the simple one stayed below 0,5%. It’s probably an eve misnomer?

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