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What people call transversal velocity is actually angular velocity

Author
Tippia
Sunshine and Lollipops
#101 - 2013-07-19 13:52:34 UTC  |  Edited by: Tippia
Infinity Ziona wrote:
Good god. Whether its locked or able to track makes no difference. Even a tracking turret wouldn't have to track when mounted on a hull that is in a orbit around a stationary target in any realistic situation.
It would if it was mounted in such a way that it wasn't affected by the rotation of the ship. Such mounts exist.

There is no need to particularly imagine anything since these devices have been around for two millennia.

Quote:
We do know how turrets work in real life.
…and having them work like they do in EVE is one of the available options.

Ciyrine wrote:
Turrets(like on a battleship) are attached to the hull for a reason. Because every time they fire they would start spinning crazily from the recoil(the conventional ones).
…and again, no-one has ever said the turrets in EVE are not attached to the ship. As for any angular momentum from firing, that happens if the force is applied off-center, and it is easily compensated for through other means.

Quote:
But more damning of all is how would a turret rotate if its not attached to the hull?
It is attached to the hull, and no-one has still ever said otherwise.

Quote:
In your camera gyrostabilzed example. If the human just holds the camera and doesnt rotate his hands/camera he will stay on target.
…as long as he imparts a momentum that provides the camera with the required angular velocity. That'.s the funny part about gyro-stabilisation: it makes things very… well… stable, but it make them a handful to do what you want since they keep fighting against any kind of rotational movement you try to impose on them.
Ciyrine
Deep Core Mining Inc.
Caldari State
#102 - 2013-07-19 13:57:58 UTC
Tippia wrote:
Weiz'mir wrote:
Same exemple as the one with me dressed up as an indian on a horse. Should the tank run around the target, the gun doesn't have to move...

Oh yes it does. Constantly. Otherwise, it would pretty much never be able to shoot — much less reliably hit — anything without coming to a stand-still. The difference in accuracy between a stabilised and a locked turret is immense.


Tanks + cameras are gyro stabilized because their carriage is moving across ground which causes up/down vibrations/movements. Which wouldnt be the case for a space ship

But their side/side motion is still attached to the hull/carriage. Which means if the tank is going in a circle(which they never are) the gun doesnt have to do any tracking. Because the tanks never go in a perfect circle around their target the turrets do have to track side/side constantly


Ciyrine
Deep Core Mining Inc.
Caldari State
#103 - 2013-07-19 14:02:51 UTC  |  Edited by: Ciyrine
Jill Xelitras wrote:
Weiz'mir wrote:
Jill Xelitras wrote:

To add to Tippia's post above. What she said is true because the tank will always be subjected to some random movement. The tank will never be able to move around in a 100% constant angular movement.


No. That's absolutely not what she is saying.


Oh, yes it is.

Tippia wrote:
The difference in accuracy between a stabilised and a locked turret is immense.




accuracy is affected for vehicles moving on the ground subject to hills/holes/bumps etc in the ground. Ships in the ocean(and presumably in space) would have turrets attached to the hull. In a perfect orbit you point guns at 90 degrees and call it a day.
Tippia
Sunshine and Lollipops
#104 - 2013-07-19 14:04:45 UTC
Ciyrine wrote:
Tanks + cameras are gyro stabilized because their carriage is moving across ground which causes up/down vibrations/movements. Which wouldnt be the case for a space ship
…and the point was that we have turret stabilisation to deal with that exact problem. Most if it is just done to counteract movements along one or two axes, but it can be done along any and all we wish to.

In EVE, the orientation of turrets is stabilised against the universe, not the local frame of reference of the ship (the only odd thing is that we have universal co-ordinates, but that's a different matter).

Quote:
But their side/side motion is still attached to the hull/carriage.
Motion, yes, but we're talking about rotation, which depends on the design and purpose. Again, you seem to be stuck on this weird notion that they're not attached to the ship. I have no idea where you got that from.
Ciyrine
Deep Core Mining Inc.
Caldari State
#105 - 2013-07-19 14:10:29 UTC
Tiber Ibis wrote:
This is kind of a ridiculous argument. Does anyone actually have evidence to suggest whether turrets would operate with a freely rotational pivot independent of the ship, or whether they would be attached to the ship and operate dependent on the ships movement. I would say the later is more likely, although as there are no real examples of turrets mounted on real space ships then I would assume that both variations are possible.


yes we have real evidence

1) tanks/cameras moving on the ground are like tipias example

2) combat ships in the ocean do not operate like tipias example. I contend that ships in space would be built like ships in the ocean.
Muad 'dib
State War Academy
Caldari State
#106 - 2013-07-19 14:13:04 UTC
I never used transversal or angular or radial. Its really not even that helpful.

I just have the targets velocity and pay attention. Ive killed a few people before, seems to work fine.

Cosmic signature detected. . . . http://i.imgur.com/Z7NfIS6.jpg I got 99 likes, and this post aint one.

Infinity Ziona
Sebiestor Tribe
Minmatar Republic
#107 - 2013-07-19 14:14:23 UTC  |  Edited by: Infinity Ziona
Tippia wrote:
Infinity Ziona wrote:
Good god. Whether its locked or able to track makes no difference. Even a tracking turret wouldn't have to track when mounted on a hull that is in a orbit around a stationary target in any realistic situation.
It would if it was mounted in such a way that it wasn't affected by the rotation of the ship. Such mounts exist.

There is no need to particularly imagine anything since these devices have been around for two millennia.

Gyrostabilization is used to minimised unwanted movement. On a tank it dampens out unwanted yaw elevation etc. Turrets might be gyrostabilized in that sense in a real life space environment however positive tracking would be simpler in terms of targeting. Positive in terms of chasing a solution rather than correcting to solve it. You would use a locked turret system unless it went off track faster than the hull could correct it or if you wanted the hull to go in another direction but the guns to stay positions.

CCP Fozzie “We can see how much money people are making in nullsec and it is, a gigantic amount, a shit-ton… in null sec anomalies. “*

Kaalrus pwned..... :)

Tippia
Sunshine and Lollipops
#108 - 2013-07-19 14:20:15 UTC  |  Edited by: Tippia
Ciyrine wrote:
I contend that ships in space would be built like ships in the ocean.
Why? If you want to talk “in real life”, the angles involved in space would be on the order of picoradians. You would definitely want to completely separate the turrets' orientation from what the ship is doing to the greatest extent possible because even the slightest shudder would send a shot off by hundreds of kilometers (and we haven't even begun to compensate for lightspeed lag and similar problems), and since there is no single plane that everything is moving on, you want complete freedom along all axes.

In EVE, they simply can't because ships are points and have no orientation for the turrets to inherit.

Infinity Ziona wrote:
Turrets might be gyrostabilized in that sense in a real life space environment however positive tracking would be simpler in terms of targeting.
Maybe, but that's an engineering preference. It doesn't mean that the maths and physics are “unreal” or “incorrect” as claimed.
The Spod
Center for Advanced Studies
Gallente Federation
#109 - 2013-07-19 14:28:10 UTC
SCIFI TIME:

How do gyrostabilizers work?
The defining clue is the statistics they affect in game. Magstab, heatsink and gyrostab all affect damage and rate of fire.

In the case of magnetic field stabilizers, they stabilize the magnetic field of the railgun to allow for faster consecutive shots (rate of fire). They can improve damage by fine timing of the shots to improve accuracy when tracking, but that's far fetched.

Heat sinks allow faster rate of fire by reducing heat build up. They improve damage by allowing bigger energy pulses which transfer partially into heat in the laser mechanism.

Gyrostabilizers stabilize the gun after shots, allowing faster re tracking of the target and thus faster rate of fire. This is because unlike lasers (and to lesser degree railguns), projectile firing mechanic causes recoil which is a big deal in space. Possibly the increased damage comes from allowing faster projectile speed (bigger recoil), but that's very much far fetched.


Angular velocity:

Take into consideration also the requirement of precision in tracking. Tracking speed thinking is limited when trying to hit small targets moving in a perpendicular vector from afar, tracking precision + tracking speed is a better way to see the big picture. I don't know how the formula goes but I'd figure it relies on gun resolution vs. target signature size.
Infinity Ziona
Sebiestor Tribe
Minmatar Republic
#110 - 2013-07-19 14:31:09 UTC
Tippia wrote:
Infinity Ziona wrote:
Turrets might be gyrostabilized in that sense in a real life space environment however positive tracking would be simpler in terms of targeting.
Maybe, but that's an engineering preference. It doesn't mean that the maths and physics are “unreal” or “incorrect” as claimed.

It does mean they are incorrect and unreal. Why would a turret system exist that cancels out the natural turning of a hull. In real life the hull turning turrets + tracking speed > just tracking speed.

CCP Fozzie “We can see how much money people are making in nullsec and it is, a gigantic amount, a shit-ton… in null sec anomalies. “*

Kaalrus pwned..... :)

Tippia
Sunshine and Lollipops
#111 - 2013-07-19 14:35:20 UTC  |  Edited by: Tippia
Infinity Ziona wrote:
It does mean they are incorrect and unreal.
…except that they exist and work exactly like that. So what's incorrect and unreal about them?

Quote:
Why would a turret system exist that cancels out the natural turning of a hull.
Because the hull turning is too imprecise and/or too violent and it's better and easier to just let the turret handle it all on its own.

Quote:
In real life the hull turning turrets + tracking speed > just tracking speed.
…except when you're turning in the wrong direction, at which point tracking speed - hull turning < just tracking speed. At any point when you turn into the target's line of travel, you have reduced your tracking ability (but not his). This makes it far more preferable to always turn away from their line of travel, which makes you predictable, which makes you easy to hit. With a freely rotating turret, there's no telling where you're going next…
The Spod
Center for Advanced Studies
Gallente Federation
#112 - 2013-07-19 14:37:41 UTC
Infinity Ziona wrote:
Tippia wrote:
Infinity Ziona wrote:
Turrets might be gyrostabilized in that sense in a real life space environment however positive tracking would be simpler in terms of targeting.
Maybe, but that's an engineering preference. It doesn't mean that the maths and physics are “unreal” or “incorrect” as claimed.

It does mean they are incorrect and unreal. Why would a turret system exist that cancels out the natural turning of a hull. In real life the hull turning turrets + tracking speed > just tracking speed.


It's a valid point that turrets on a rotating hull could be more accurate than just rotating turrets on a stationary hull. Then again, in EVE your turrets are shooting from the middle of your ship and through your ship for half of the occations.

Turret placement and angles would be a really interesting design addition :)
Murk Paradox
Ministry of War
Amarr Empire
#113 - 2013-07-19 14:54:31 UTC
Weiz'mir wrote:
Thank you Tippia for your explaination. However I am still not convinced at all...

May I ask if there is anyone here who agrees with Tippia ?


I do. People here trying to argue are considering the target is not moving at all. The reason turrets have tracking, is because they are not shooting a stationary target.

When that target IS stationary, there is no tracking issue.

That cowboy and indian for instance. If that indian was orbiting around a bottle on a post he would need a fixed firing position and rely solely on his horse to maintain the correct orbit. The gun would not need to move.

But since we are talking about a target moving in it's own orbit, that indians rifle needs to compensate for the dynamic trajectory of it's target.

Which si the tracking speed we are talking about here.

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Murk Paradox
Ministry of War
Amarr Empire
#114 - 2013-07-19 14:58:23 UTC
Tiber Ibis wrote:
Tippia wrote:
Tiber Ibis wrote:
Does anyone actually have evidence to suggest whether turrets would operate with a freely rotational pivot independent of the ship
…ehm… that's exactly how turrets in EVE work (for the simple reason that ships don't really have any kind of rotation to inherit, what with being points and all).

I know that is how turrets work in eve. But seeing as the suggestion was that turrets would not work like this in real life, I was simply stating we don't actually know how turrets would work in real life, and they could in fact work both ways.



Cranes from a work bay on the old (now defunct) space shuttle comes to mind.

This post has been signed by Murk Paradox and no other accounts, alternate or otherwise. Any other post claiming to be this holder's is subject to being banned at the discretion of the GM Team as it would violate the TOS in regards to impersonation. Signed, Murk Paradox. In triplicate.

Murk Paradox
Ministry of War
Amarr Empire
#115 - 2013-07-19 15:00:01 UTC
Infinity Ziona wrote:
Tippia wrote:
Weiz'mir wrote:
You did'nt understand her point.
Yes he did. You did not.

The larger point is that, from the EVE ship perspective, if you're going to move your turret around anyway, why create a lock-down mechanism that the tracking then has to fight when you could just decouple the tracking from the ship movement entirely and let it do its own thing. There's no reason to enforce a gimbal lock other than to stow the guns for travel. End result: turrets that sit within their own reference frame and have to track the target from that point of view rather than the PoV of the ship.

Good god. Whether its locked or able to track makes no difference. Even a tracking turret wouldn't have to track when mounted on a hull that is in a orbit around a stationary target in any realistic situation.

Imagine the space shuttle orbiting the earth with a gun pointed 90 degrees towards the earth. It would be guaranteed to hit the earth no matter what.

Imagine a clock is a stationary ship, it's hands are the direction from which a turret is firing at it from the end points in. Cut out a firing paper ship and blue tack it to the ends of the hands.

The only inaccuracies you will get are when the target is small and the velocity of the ship imparted to the projectile as it leaves the gun cause it to miss which would not happen given the velocities of rounds vs speed of eve ships. Even then the tracking to compensate would be tiny.



Or a compass being held by someone spinning in a circle. True north being the target.

This post has been signed by Murk Paradox and no other accounts, alternate or otherwise. Any other post claiming to be this holder's is subject to being banned at the discretion of the GM Team as it would violate the TOS in regards to impersonation. Signed, Murk Paradox. In triplicate.

Tippia
Sunshine and Lollipops
#116 - 2013-07-19 15:03:26 UTC
Murk Paradox wrote:
But since we are talking about a target moving in it's own orbit, that indians rifle needs to compensate for the dynamic trajectory of it's target.

Which si the tracking speed we are talking about here.

…actually we're talking about both. Blink

I'm simply pointing out that, if you disconnect the orientation of the turret from the orientation of the vehicle, then you'd have tracking issues in the static-target situation as well since the turret now has to individually maintain the same angular velocity as the vehicle does. I'm also pointing out that this is not magic; that it exists and is real and is entirely correct when you start looking across multiple frames of reference.

The counter arguments essentially range from “I don't understand frames of reference” to “why would anyone do that?”, neither of which makes the maths and mechanics behind it incorrect.
Weiz'mir
Brutor Tribe
Minmatar Republic
#117 - 2013-07-19 15:03:44 UTC
Tippia wrote:
Infinity Ziona wrote:
It does mean they are incorrect and unreal.
…except that they exist and work exactly like that. So what's incorrect and unreal about them?


Six pages of peremptory assertions ! Congrat'
Murk Paradox
Ministry of War
Amarr Empire
#118 - 2013-07-19 15:09:03 UTC  |  Edited by: Murk Paradox
Ciyrine wrote:
Jill Xelitras wrote:
Weiz'mir wrote:
Jill Xelitras wrote:

To add to Tippia's post above. What she said is true because the tank will always be subjected to some random movement. The tank will never be able to move around in a 100% constant angular movement.


No. That's absolutely not what she is saying.


Oh, yes it is.

Tippia wrote:
The difference in accuracy between a stabilised and a locked turret is immense.




accuracy is affected for vehicles moving on the ground subject to hills/holes/bumps etc in the ground. Ships in the ocean(and presumably in space) would have turrets attached to the hull. In a perfect orbit you point guns at 90 degrees and call it a day.



Let's do an experiment. First, take a broom handle. Tie it to the handlebars of a bike so it's 90 degrees. Now, create a chalkline circle in a parking lot, or take that bike to your local DMV/Revenue Office that has motorcyle tests/classes (they have a perfect circle painte don their training area).

Now, take your bike, and ride it following that painted circle. Put a cone in the circle. Notice how you can almost maintain 100% lock on that target (barring human error of changing the handlebars slightly)?

Now, take a small kiddie pool and put a soccer ball in that pool of water and make sure it is centered inside of your circle. Notice times your handlebars are not locked on the target (the ball should not be stationary hence the water).

Now do it again with a much larger pool (showing different orbits and velocities) and record your findings.

Now explain how you would not need to untie your broomhandle to maintain 100% lock on your targets in all your phases of this experiment.

This is why turrets track and having tracking speeds to compensate for different velocities and orbits.

EDIT- My experiment is flawed based on the premise that the handlebars control the steering so therefore the aim of the boomhandle would be off. Instead, fix the broomhandle farther down the bike to maintain a fixed position.

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Murk Paradox
Ministry of War
Amarr Empire
#119 - 2013-07-19 15:10:19 UTC
Tippia wrote:
Murk Paradox wrote:
But since we are talking about a target moving in it's own orbit, that indians rifle needs to compensate for the dynamic trajectory of it's target.

Which si the tracking speed we are talking about here.

…actually we're talking about both. Blink

I'm simply pointing out that, if you disconnect the orientation of the turret from the orientation of the vehicle, then you'd have tracking issues in the static-target situation as well since the turret now has to individually maintain the same angular velocity as the vehicle does. I'm also pointing out that this is not magic; that it exists and is real and is entirely correct when you start looking across multiple frames of reference.

The counter arguments essentially range from “I don't understand frames of reference” to “why would anyone do that?”, neither of which makes the maths and mechanics behind it incorrect.



Yea, I'm agreeing with you. I might not know the formulae for figuring out those trajectories, but I do understand why they are there and what function they provide hehe. I'm just trying to put into layman's terms.

This post has been signed by Murk Paradox and no other accounts, alternate or otherwise. Any other post claiming to be this holder's is subject to being banned at the discretion of the GM Team as it would violate the TOS in regards to impersonation. Signed, Murk Paradox. In triplicate.

Murk Paradox
Ministry of War
Amarr Empire
#120 - 2013-07-19 15:14:54 UTC
Infinity Ziona wrote:
Tippia wrote:
Infinity Ziona wrote:
Turrets might be gyrostabilized in that sense in a real life space environment however positive tracking would be simpler in terms of targeting.
Maybe, but that's an engineering preference. It doesn't mean that the maths and physics are “unreal” or “incorrect” as claimed.

It does mean they are incorrect and unreal. Why would a turret system exist that cancels out the natural turning of a hull. In real life the hull turning turrets + tracking speed > just tracking speed.



Centrifugal and Centripedal force do not exist in space I don't think, nor are they even considered in Eve afaik. So while the theories are sound and correct, the actual process of duplicating the same effects in a different environment would not use the same formula.

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