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03-14-2010, 04:23 PM #2056
Re: PR Dev Journal.
And will move forward at the same speed of the car at release.
IRL, the Coriolis effect would affect how quickly the forward movement decelerates (and at some point turn into 'backwards' movement), if I am correct in my thought.
(And this is, of course, not accounting for wind resistance which would couple with the Coriolis effect to force the ball 'backwards' from the car.)
I don't think that the engine would replicate the Coriolis effect, but the concept of the shell moving forward with the tank is correct (though, again, not that pronounced, and offset by the Coriolis effect).
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03-14-2010, 04:26 PM #2057
Re: PR Dev Journal.
Don't forget that the ranges in PR are alot different than RL just because of view distances and ballistics. Agreed that the BF2 physics are wack.
|TG-69th|chrisweb89









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03-14-2010, 05:08 PM #2058
Re: PR Dev Journal.
correction, the shell was just curving towards chris's head IRL, call it the chrisfrag effect.

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03-14-2010, 07:50 PM #2059
Re: PR Dev Journal.
The Coriolis effect would be negligible compared to the effect that the tank is moving forward at lets say 15m/s (=54km/h) and the target is 300m away and the bullet leaves the barrel at 600m/s(=2160km/h~2xspeed of sound). this means that the round will be in flight for around half a second which means that it hits 7.5m infront of where you were aiming at the time of firing. In the video this effect is increased since the frame of reference is changed during the flight of the round, he keeps aiming at the same target which means that the the angle to the rounds trajectory is changed which makes the curve more pronounced. I have not taken the drag from the bullit slowing it down into account since it is negligible.
Hope that makes sense...If people are becoming so bored when playing that they have to resort to this immature behaviour I will give them something to do, call it a project. The project is "appeal a ban". - Wicks









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03-14-2010, 07:54 PM #2060
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03-15-2010, 09:50 AM #2061
Re: PR Dev Journal.
Well Kat calls him self physicist, so we might as well just listen to understand it.

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03-15-2010, 12:45 PM #2062
Re: PR Dev Journal.
Guys, coriolis effect? Really? Sounds like Kat is the only one who has any idea what he is talking about. Coriolis effect is caused by the fact that our reference plane (the earth) is in itself a rotating sphere. It is apparent over very long distances. Look at the way wind moves relative to high and low pressures. It flows parallel to the direction you'd think it would. This is because it's motion appears to be deflected 90* to the right in the northern hemisphere. This is an illusion due to the fact that we reference the earth as stationary in weather maps, when in actuality it is rotating. Wiki has a good description of it, and you can search it on youtube to see a good demonstration as well. For fire control solutions, coriolis effect doesn't even remotely become a factor until you are talking about high-trajectory indirect fire artillery with really long hang times, and even then you are talking about only very small errors. Yes, there is an itsy-bitsy teeny tiny coriolis effect when you fire a tank shell, but it is so minute that it would be completely overwhelmed by other factors such as barrel temperature and wear, manufacturing imperfections in the round, varying chemistry of the propellant, etc. Skud, the reason the ball goes to the right when you throw it out your window is because you are throwing it out of the passenger window and aerodynamic drag is slowing it down. To your constant-velocity reference point, it's path appears to curve right. If you want to observe coriolis effect, drive your car in a left-hand circle, then throw the ball straight ahead. It's path will appear to curve to the right to anyone in the car, but to anyone standing on the ground the ball will follow a straight trajectory. Viola, coriolis effect.
Now, to keep this on topic...
Originally Posted by R-DEV Alkali
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03-15-2010, 01:36 PM #2063
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03-15-2010, 01:51 PM #2064

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Re: PR Dev Journal.
Well in the AF they decided to play the opposite day joke on you, but they also never told you the joke was over. - I keed, I Keed.
If you are looking for the answer it is all explained here guys:
Semi-NSFW (I want to cover all my base, so they belong to me and not you)
ttp://www.myconfinedspace.com/?attachment_id=128593
*Why would this effect pertain to PR anyways? It's a video game, I don't even think ARMA I or ARMA II puts this effect into the game, and there are daytime changes to night time as well as different weather variants such as: rain and fog, and wind.Last edited by Delta*RandyShugart*; 03-15-2010 at 04:39 PM.
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We are not trying to attract mainstream gamers."
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03-15-2010, 03:32 PM #2065
Re: PR Dev Journal.
Similar science can been seen flushing a toilet south of the equator. Or Wikipedia.

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03-15-2010, 06:50 PM #2066
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03-18-2010, 11:20 AM #2067
Re: PR Dev Journal.
http://www.realitymod.com/forum/blog...es-update.html
3D Scopes Update.
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03-18-2010, 01:26 PM #2068
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03-18-2010, 01:39 PM #2069
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03-18-2010, 05:23 PM #2070
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