Aces High Bulletin Board

General Forums => Aces High General Discussion => Topic started by: Dream Child on July 30, 2007, 10:52:13 AM

Title: Bullet speed
Post by: Dream Child on July 30, 2007, 10:52:13 AM
I've noticed that the speed of the bulletts in AH is about 1/2 of real life, most likely it's exactly 1/2 of real life. I haven't tested the plane speed yet. Is it 1/2 speed also? Is there a point to having 1/2 speed bulletts?
Title: Bullet speed
Post by: Husky01 on July 30, 2007, 10:54:01 AM
:huh Um I don't think the plane speed is 1/2 of what it is in real life if thats what your asking?
Title: Re: Bullet speed
Post by: dedalos on July 30, 2007, 11:00:22 AM
Quote
Originally posted by Dream Child
I've noticed that the speed of the bulletts in AH is about 1/2 of real life, most likely it's exactly 1/2 of real life. I haven't tested the plane speed yet. Is it 1/2 speed also? Is there a point to having 1/2 speed bulletts?


How did you measure it?
Title: Re: Re: Bullet speed
Post by: RedDg on July 30, 2007, 11:55:55 AM
Quote
Originally posted by dedalos
How did you measure it?



By watching The Matrix 10 times.
Title: Re: Re: Bullet speed
Post by: TinmanX on July 30, 2007, 12:05:33 PM
Quote
Originally posted by dedalos
How did you measure it?


He's Superman, at least that's what his underwear says.
Title: Bullet speed
Post by: Shuffler on July 30, 2007, 12:06:54 PM
He must have been dreaming
Title: Bullet speed
Post by: SlapShot on July 30, 2007, 12:22:58 PM
Oh boy ... IN !!!

:rolleyes:
Title: Bullet speed
Post by: dedalos on July 30, 2007, 12:24:26 PM
Maybe he was using old bullets.  Like old people they also slow :D
Title: Bullet speed
Post by: SlapShot on July 30, 2007, 12:31:39 PM
Quote
Originally posted by dedalos
Maybe he was using old bullets.  Like old people they also slow :D


I always check the expiration date on my .50 cals when loading out just for this specific purpose.

:rofl
Title: Re: Re: Re: Bullet speed
Post by: hammer on July 30, 2007, 12:35:04 PM
Quote
Originally posted by TinmanX
He's Superman, at least that's what his underwear says.
:rofl
Title: Re: Re: Bullet speed
Post by: Dream Child on July 30, 2007, 12:48:24 PM
Quote
Originally posted by dedalos
How did you measure it?


Go offline and use the .target command. Set a target at 800 yards. Use a M-16 or something else with .50 BMG rounds. A .50 BMG has about a 2800-2900 fps muzzle velocity depending on specific load. It should take almost exactly one second to get to 800 yards. It takes 2 seconds to do so.
Title: Bullet speed
Post by: Krusty on July 30, 2007, 12:53:42 PM
Are you sure? 2 seconds is a long time. Get a stopwatch and time it. I've taken many pot-shots at 800 yards and only had to wait about a second to see the results.

Also, that's just the exit-the-barrel speed. It slows down AFTER that point due to the density of the air its passing through.

EDIT: 800 yds is about 2400 feet. If the muzzel velocity is 2800-2900 (and I'm just quoting you here) it wouldn't be exactly one second it would be 0.85 seconds or so.
Title: Re: Re: Re: Bullet speed
Post by: Clifra Jones on July 30, 2007, 12:54:05 PM
Quote
Originally posted by Dream Child
Go offline and use the .target command. Set a target at 800 yards. Use a M-16 or something else with .50 BMG rounds. A .50 BMG has about a 2800-2900 fps muzzle velocity depending on specific load. It should take almost exactly one second to get to 800 yards. It takes 2 seconds to do so.


As soon as the round leave the barrel is starts losing velocity. There are smarter folks here who can explain it better. But suffice it to say it does not travel 2800 FPS the entire time it is in the air.
Title: Re: Re: Re: Bullet speed
Post by: BaldEagl on July 30, 2007, 12:57:07 PM
Quote
Originally posted by Dream Child
Go offline and use the .target command. Set a target at 800 yards. Use a M-16 or something else with .50 BMG rounds. A .50 BMG has about a 2800-2900 fps muzzle velocity depending on specific load. It should take almost exactly one second to get to 800 yards. It takes 2 seconds to do so.


Wow.  There's someone with twice too much time on their hands.
Title: Re: Re: Re: Bullet speed
Post by: GunnerCAF on July 30, 2007, 01:08:48 PM
Quote
Originally posted by Dream Child
Go offline and use the .target command. Set a target at 800 yards. Use a M-16 or something else with .50 BMG rounds. A .50 BMG has about a 2800-2900 fps muzzle velocity depending on specific load. It should take almost exactly one second to get to 800 yards. It takes 2 seconds to do so.


EEs are some of the smartest people I know.  I did this and it looks to be very close to one second at a target distance of 967.  Is it possible your having some PC hardware problems?

Gunner
Title: Bullet speed
Post by: SkyRock on July 30, 2007, 01:15:55 PM
This thread is soo.......................... dreamy!:D
Title: Bullet speed
Post by: Toad on July 30, 2007, 01:23:58 PM
Just to give you an idea

Muzzle 2898

400 yds 2306

800 yds 1790

and that's with the HEIAP 665g; the heavier ball probably slows down faster.
Title: Bullet speed
Post by: rabbidrabbit on July 30, 2007, 01:30:39 PM
I believe the heavier ball would slow down slower... ie... carry better...
Title: Bullet speed
Post by: Castedo on July 30, 2007, 01:40:41 PM
Shape matter too.  I believe the 50 were faster, but I could be wrong.
Title: Re: Re: Re: Bullet speed
Post by: Masherbrum on July 30, 2007, 02:15:58 PM
Quote
Originally posted by TinmanX
He's Superman, at least that's what his underwear says.
Oh chit!   :rofl :rofl :rofl :rofl
Title: Bullet speed
Post by: Dream Child on July 30, 2007, 03:09:29 PM
Quote
Originally posted by Krusty
Are you sure? 2 seconds is a long time. Get a stopwatch and time it. I've taken many pot-shots at 800 yards and only had to wait about a second to see the results.

Also, that's just the exit-the-barrel speed. It slows down AFTER that point due to the density of the air its passing through.

EDIT: 800 yds is about 2400 feet. If the muzzel velocity is 2800-2900 (and I'm just quoting you here) it wouldn't be exactly one second it would be 0.85 seconds or so.


The one second takes into account the drop in bullet speed. Yes, 800 yards is 2400 feet. A .50 BMG is still doing over 2400 fps at 300 yards. The bullet slows down after exiting the barrell, the end result is that it's almost exactly 1 second at 800 yards for the real thing.
Title: Re: Re: Bullet speed
Post by: ClevMan on July 30, 2007, 03:13:42 PM
Quote
Originally posted by dedalos
How did you measure it?


Yardstick?
Title: Re: Re: Re: Bullet speed
Post by: Slash27 on July 30, 2007, 03:25:37 PM
Quote
Originally posted by ClevMan
Yardstick?


pervert:mad:
Title: Bullet speed
Post by: Furious on July 30, 2007, 03:42:29 PM
Where's Tony?
Title: Bullet speed
Post by: kvuo75 on July 30, 2007, 03:46:10 PM
Modern Ballistics Data Created: 07/30/07 13:44:16

Firearm: Default
Cartridge: .50 BMG
Conditions: Default
Range (yds):            50    100    200    400    600    800   1000   1200   1400   1500
----
Drop (inches)         0.56   2.27   9.27  38.80  91.60 171.21 281.92 428.93 618.59 731.80
Height (inches)       3.18   6.71  10.18   1.58 -30.27 -88.94-178.70-304.76-473.48-576.22
Height (moa)          6.07   6.40   4.86   0.38  -4.82 -10.62 -17.06 -24.25 -32.29 -36.68
Height (mils)         1.76   1.86   1.41   0.11  -1.40  -3.09  -4.96  -7.05  -9.39 -10.67
Windage (inches)      0.08   0.31   1.27   5.25  12.23  22.56  36.62  54.87  77.83  91.27
Windage (moa)         0.15   0.30   0.61   1.25   1.95   2.69   3.50   4.37   5.31   5.81
Windage (mils)        0.04   0.09   0.18   0.36   0.57   0.78   1.02   1.27   1.54   1.69
Time (S)             0.054  0.109  0.221  0.458  0.712  0.985  1.280  1.597  1.942  2.126
Velocity (ft/S)       2755   2710   2621   2448   2280   2119   1963   1814   1670   1600
Energy (ft-lbs)      12635  12226  11437   9975   8658   7475   6418   5478   4644   4265
PF                    2066   2032   1966   1836   1710   1589   1472   1360   1253   1200
Group (inches)        0.02   0.08   0.34   1.40   3.26   6.01   9.75  14.61  20.72  24.30
Group (moa)           0.04   0.08   0.16   0.33   0.52   0.72   0.93   1.16   1.41   1.55
Group (mils)          0.01   0.02   0.05   0.10   0.15   0.21   0.27   0.34   0.41   0.45
Groups <= desired    0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%
1 grp of <= desired    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0
-----
Constants:
Mid rng Ht (in)    10.3   Midrange (yds)     219.6  Zero (yds)         415.4  
Near zero (yds)    14.8   P.B. Size (in)     20.55  P.B. Range (yds)   494    
M.V. (ft/S)        2800   M.V. SDev (fps)    0.0    B.C.               1.050  
Mass (grains)      750    Sight Ht (in)      1.50   Indicated SA (moa) 10.00  
SA Offset (moa)    0.00   Barometer          29.53  Incline (deg)      0      
Wind (mph)         10     Wind error (mph)   2      Wind (deg.)        90    
Temp (F)           59     Alt. (feet)        0      Gravity            32.17  
Shots per group    5      Bullet acc. (moa)  0.00   Desired Grp (moa)  1.00  
Group Simulations  500    
----
Firearm name: Default
Firearm notes:
Cartridge name: .50 BMG
Cartridge notes: BC is for Hornady A-Max.  MV is for max load of H50BMG.
Conditions name: Default
Conditions notes:



courtesy of the free program http://www.modernballistics.com/
Title: Re: Re: Re: Bullet speed
Post by: sgt203 on July 30, 2007, 04:11:46 PM
Quote
Originally posted by TinmanX
He's Superman, at least that's what his underwear says.


:rofl :rofl :rofl

Now thats funny right there :aok

 :aok
Title: Bullet speed
Post by: Bronk on July 30, 2007, 04:20:45 PM
Quote
Originally posted by kvuo75
Modern Ballistics Data Created: 07/30/07 13:44:16

Firearm: Default
Cartridge: .50 BMG
Conditions: Default
Range (yds):            50    100    200    400    600    800   1000   1200   1400   1500
----
Drop (inches)         0.56   2.27   9.27  38.80  91.60 171.21 281.92 428.93 618.59 731.80
Height (inches)       3.18   6.71  10.18   1.58 -30.27 -88.94-178.70-304.76-473.48-576.22
Height (moa)          6.07   6.40   4.86   0.38  -4.82 -10.62 -17.06 -24.25 -32.29 -36.68
Height (mils)         1.76   1.86   1.41   0.11  -1.40  -3.09  -4.96  -7.05  -9.39 -10.67
Windage (inches)      0.08   0.31   1.27   5.25  12.23  22.56  36.62  54.87  77.83  91.27
Windage (moa)         0.15   0.30   0.61   1.25   1.95   2.69   3.50   4.37   5.31   5.81
Windage (mils)        0.04   0.09   0.18   0.36   0.57   0.78   1.02   1.27   1.54   1.69
Time (S)             0.054  0.109  0.221  0.458  0.712  0.985  1.280  1.597  1.942  2.126
Velocity (ft/S)       2755   2710   2621   2448   2280   2119   1963   1814   1670   1600
Energy (ft-lbs)      12635  12226  11437   9975   8658   7475   6418   5478   4644   4265
PF                    2066   2032   1966   1836   1710   1589   1472   1360   1253   1200
Group (inches)        0.02   0.08   0.34   1.40   3.26   6.01   9.75  14.61  20.72  24.30
Group (moa)           0.04   0.08   0.16   0.33   0.52   0.72   0.93   1.16   1.41   1.55
Group (mils)          0.01   0.02   0.05   0.10   0.15   0.21   0.27   0.34   0.41   0.45
Groups <= desired    0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%
1 grp of <= desired    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0
-----
Constants:
Mid rng Ht (in)    10.3   Midrange (yds)     219.6  Zero (yds)         415.4  
Near zero (yds)    14.8   P.B. Size (in)     20.55  P.B. Range (yds)   494    
M.V. (ft/S)        2800   M.V. SDev (fps)    0.0    B.C.               1.050  
Mass (grains)      750    Sight Ht (in)      1.50   Indicated SA (moa) 10.00  
SA Offset (moa)    0.00   Barometer          29.53  Incline (deg)      0      
Wind (mph)         10     Wind error (mph)   2      Wind (deg.)        90    
Temp (F)           59     Alt. (feet)        0      Gravity            32.17  
Shots per group    5      Bullet acc. (moa)  0.00   Desired Grp (moa)  1.00  
Group Simulations  500    
----
Firearm name: Default
Firearm notes:
Cartridge name: .50 BMG
Cartridge notes: BC is for Hornady A-Max.  MV is for max load of H50BMG.
Conditions name: Default
Conditions notes:



courtesy of the free program http://www.modernballistics.com/

Great, now what weapon is it fired from?
An AC HMG or say a closed bolt single shot sniper rifle?
What about wind hitting the muzzle at 300mph.
Also add in your target is traveling at over a football field a second.

Time of flight for an 800 yd target  moving at say 300 mph would be what?

:huh


Bronk
Title: Bullet speed
Post by: Rino on July 30, 2007, 04:22:40 PM
Quote
Originally posted by dedalos
Maybe he was using old bullets.  Like old people they also slow :D


      Was the bullet's left turn signal left on for the duration of the flight? :D
Title: Re: Re: Re: Bullet speed
Post by: Lusche on July 30, 2007, 05:10:47 PM
Quote
Originally posted by Dream Child
Go offline and use the .target command. Set a target at 800 yards. Use a M-16 or something else with .50 BMG rounds. A .50 BMG has about a 2800-2900 fps muzzle velocity depending on specific load. It should take almost exactly one second to get to 800 yards. It takes 2 seconds to do so.


I only have the real world data for German ammo, but a 13mm round (if someone wants to know the exact type of round: Pzgr.Patr L'Spur el o.Zerl) needs 1.967 seconds to travel to 800m (879yds), a 20mm MG 151 round (M-Geschoss) 2 seconds.

So you observation of about 2 seconds does not look like a bug to me. :)
Title: Bullet speed
Post by: Dream Child on July 30, 2007, 06:31:40 PM
Quote
Originally posted by Bronk
Great, now what weapon is it fired from?
An AC HMG or say a closed bolt single shot sniper rifle?
What about wind hitting the muzzle at 300mph.
Also add in your target is traveling at over a football field a second.

Time of flight for an 800 yd target  moving at say 300 mph would be what?

:huh


Bronk


All of this is irrelevent. The initial scenario was a stationary target with a stationary firing platform. If those numbers aren't correct, then none of the other numbers will be correct either. His numbers showed 0.985 seconds at 800 yards, basically verifying my "almost exactly one second" statement at 800 yards. Unfortunatly, timing this offline is a bit tricky. It still looks slow to me. I'm having a more difficult time finding numbers for the tanks used in this game, as they could be timed easier at longer distances.
Title: Re: Re: Re: Re: Bullet speed
Post by: Dream Child on July 30, 2007, 06:38:27 PM
Quote
Originally posted by Lusche
I only have the real world data for German ammo, but a 13mm round (if someone wants to know the exact type of round: Pzgr.Patr L'Spur el o.Zerl) needs 1.967 seconds to travel to 800m (879yds), a 20mm MG 151 round (M-Geschoss) 2 seconds.

So you observation of about 2 seconds does not look like a bug to me. :)


As I recall, one of the reason's the .50 BMG was so popular in air to air combat was it's relatively flat trajectory compared to much of the other stuff. The real thing traveled 800 yards in about 1 second, dropping less than 200 inches. A bullet traveling for 2 seconds will drop approximatly 4 times as much as one traveleing for 1 second.
Title: Bullet speed
Post by: Lusche on July 30, 2007, 07:09:16 PM
I just did a small test. Took a F6F and fired at a target at 800yds. I recorded that with FRAPS, then examined the film on a frame by frame base. Bullet flight time was just about 1 second, maybe 1.1 at most. Did that several times, just to be sure.

How did you measure the time of flight in your test?
Title: Bullet speed
Post by: Widewing on July 30, 2007, 07:34:05 PM
Quote
Originally posted by Lusche
How did you measure the time of flight in your test?


(http://www.disneythemes.com/ebay/seiko_mickey_arms_womenb.jpg)

My regards,

Widewing
Title: Bullet speed
Post by: FBplmmr on July 30, 2007, 07:39:17 PM
:rofl :rofl

Widewing :aok
Title: Bullet speed
Post by: TalonX on July 30, 2007, 07:42:08 PM
Quote
Originally posted by kvuo75
Modern Ballistics Data Created: 07/30/07 13:44:16

Firearm: Default
Cartridge: .50 BMG
Conditions: Default
Range (yds):            50    100    200    400    600    800   1000   1200   1400   1500
----
Drop (inches)         0.56   2.27   9.27  38.80  91.60 171.21 281.92 428.93 618.59 731.80
Height (inches)       3.18   6.71  10.18   1.58 -30.27 -88.94-178.70-304.76-473.48-576.22
Height (moa)          6.07   6.40   4.86   0.38  -4.82 -10.62 -17.06 -24.25 -32.29 -36.68
Height (mils)         1.76   1.86   1.41   0.11  -1.40  -3.09  -4.96  -7.05  -9.39 -10.67
Windage (inches)      0.08   0.31   1.27   5.25  12.23  22.56  36.62  54.87  77.83  91.27
Windage (moa)         0.15   0.30   0.61   1.25   1.95   2.69   3.50   4.37   5.31   5.81
Windage (mils)        0.04   0.09   0.18   0.36   0.57   0.78   1.02   1.27   1.54   1.69
Time (S)             0.054  0.109  0.221  0.458  0.712  0.985  1.280  1.597  1.942  2.126
Velocity (ft/S)       2755   2710   2621   2448   2280   2119   1963   1814   1670   1600
Energy (ft-lbs)      12635  12226  11437   9975   8658   7475   6418   5478   4644   4265
PF                    2066   2032   1966   1836   1710   1589   1472   1360   1253   1200
Group (inches)        0.02   0.08   0.34   1.40   3.26   6.01   9.75  14.61  20.72  24.30
Group (moa)           0.04   0.08   0.16   0.33   0.52   0.72   0.93   1.16   1.41   1.55
Group (mils)          0.01   0.02   0.05   0.10   0.15   0.21   0.27   0.34   0.41   0.45
Groups <= desired    0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%  0.00%
1 grp of <= desired    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0    0.0
-----
Constants:
Mid rng Ht (in)    10.3   Midrange (yds)     219.6  Zero (yds)         415.4  
Near zero (yds)    14.8   P.B. Size (in)     20.55  P.B. Range (yds)   494    
M.V. (ft/S)        2800   M.V. SDev (fps)    0.0    B.C.               1.050  
Mass (grains)      750    Sight Ht (in)      1.50   Indicated SA (moa) 10.00  
SA Offset (moa)    0.00   Barometer          29.53  Incline (deg)      0      
Wind (mph)         10     Wind error (mph)   2      Wind (deg.)        90    
Temp (F)           59     Alt. (feet)        0      Gravity            32.17  
Shots per group    5      Bullet acc. (moa)  0.00   Desired Grp (moa)  1.00  
Group Simulations  500    
----
Firearm name: Default
Firearm notes:
Cartridge name: .50 BMG
Cartridge notes: BC is for Hornady A-Max.  MV is for max load of H50BMG.
Conditions name: Default
Conditions notes:



courtesy of the free program http://www.modernballistics.com/


Now we have real data....   take a look at the velocity profile (by the way, this is a function of the ballistic coefficient, as well as density).   The "average" velocity is about 2400 fps over the 800 yards...  This means it would take about the 1 second he projected.

So, who the heck knows?  LOL   It should take a second...  On a separate note, the sound of the hit would be at the shooter two seconds later... Interesting.

Title: Bullet speed
Post by: Lusche on July 30, 2007, 07:46:09 PM
Quote
Originally posted by TalonX
This means it would take about the 1 second he projected.

So, who the heck knows?  


We do. It takes 1sec in game too. See my post above ;)
Title: Bullet speed
Post by: Dream Child on July 30, 2007, 07:54:03 PM
Quote
Originally posted by Lusche
I just did a small test. Took a F6F and fired at a target at 800yds. I recorded that with FRAPS, then examined the film on a frame by frame base. Bullet flight time was just about 1 second, maybe 1.1 at most. Did that several times, just to be sure.

How did you measure the time of flight in your test?


I did a film, but AH's recorder doesn't show the target, so I wasn't able to look at it that way. Apparently Widewing's method didn't work too well for me. At this point I'll take your word that you got accurate information. This is the first reply that gave any good way to test this.
Title: Bullet speed
Post by: stickpig on July 30, 2007, 08:27:14 PM
Does anyone really give a #$$% ?
Title: Bullet speed
Post by: redman555 on July 30, 2007, 08:35:08 PM
ok...:huh ... only got 1 thing to say......SQEEKER!!!!!!!!!!! :O :D , o and wide wing nice watch rofl, i think i know wat u mean by the mouse.... in other words wat i said on first line :D


-BigBOB1
Title: Bullet speed
Post by: Husky01 on July 30, 2007, 08:40:17 PM
Quote
Originally posted by redman555
ok...:huh ... only got 1 thing to say......SQEEKER!!!!!!!!!!! :O :D , o and wide wing nice watch rofl, i think i know wat u mean by the mouse.... in other words wat i said on first line :D


Pot meet Kettle. Kettle meet Pot.
Title: Bullet speed
Post by: SAS_KID on July 30, 2007, 08:48:37 PM
Kettle meet Pot. Pot meet Kettle.
Title: Bullet speed
Post by: redman555 on July 30, 2007, 08:51:08 PM
huh rofl???


-BigBOB1
Title: Bullet speed
Post by: fuzeman on July 30, 2007, 08:58:24 PM
I think the air in Aces High is denser than your average air, least it seems that way to me.
Then again it might depend on who just exhaled.
Title: Bullet speed
Post by: TinmanX on July 30, 2007, 09:17:21 PM
Quote
Originally posted by Husky01
Pot meet Kettle. Kettle meet Pot.


Sounds like a fun cuppa.
Title: Bullet speed
Post by: ariansworld on July 30, 2007, 09:53:01 PM
Quote
Originally posted by dedalos
Maybe he was using old bullets.  Like old people they also slow :D
:rofl :rofl :rofl :rofl  LMAO
Title: Bullet speed
Post by: froger on July 31, 2007, 01:13:49 AM
This post is almost as good as SRs ego party post...
    any of you tech guys have jobs>???


FROGER <----the other grean meat:rolleyes:
Title: Bullet speed
Post by: Masherbrum on July 31, 2007, 05:55:07 AM
Quote
Originally posted by stickpig
Does anyone really give a #$$% ?
I don't.