Author Topic: Questions about the PT 40mm (Read 1203 times)

Hades55 · « **Reply #15 on:** April 02, 2006, 01:38:13 AM »

Seagoon i have also shoot some times with the 40mm bofors real life
and indeed are more accurate than Ah, BUT,
here you are on a *Sea* boat, means that even in a No Waves
sea contition, after the first bullet, the little motion of the boat
from the power of the shoot is enough to loose your exact aim
let the vibrations of the weapon.

Very accurate in the First One bullet shoot. After....

( at 2km shoot i was (we, 2 of us) 30cm near center (old wwii metal sight).
Not bad at all.

Kurt · « **Reply #16 on:** April 02, 2006, 09:45:13 AM »

Quote

Originally posted by Tails
Pitch, roll, yaw, and elevation

You know, if I had taken two seconds from typing my smart-arsy post, I would have counted those up.

Actually you could add two more to that list because the craft might be drifting left or right (thats one) or forward or back..

You really end up with motion along X,Y,Z, plus the following which can occur without moving out of position; pitch, roll, and yaw.

And then you have the whole Space/Time thing, and thats where it gets ugly.

Lye-El · « **Reply #17 on:** April 02, 2006, 11:15:44 AM »

Quote

Originally posted by nirvana
The gun's on the AC-130 are also computer controlled and are brought on target by GPS and lasers IIRC.

Thats targeting. If the gun doesn't shoot for crap having excellent sights doesn't help.

Meatwad · « **Reply #18 on:** April 02, 2006, 12:28:04 PM »

Quote

Originally posted by Urchin
Lol.. not only is the PT boat unstable on the X,Y, and Z axes, time slips as well?

This one time I fired the spud gun, and I found myself at last week thursday

Urchin · « **Reply #19 on:** April 02, 2006, 12:58:16 PM »

Lol...

"boom ... boom.... boom" WTF!! RL LAG!!!

brady · « **Reply #20 on:** April 02, 2006, 01:28:25 PM »

Spud guns are fun:)

calan · « **Reply #21 on:** April 03, 2006, 01:04:42 AM »

Quote

Originally posted by Kurt

...
You really end up with motion along X,Y,Z, plus the following which can occur without moving out of position; pitch, roll, and yaw.
...

6 degrees of freedom... but still only 3 dimensions

Calan

Flatbar · « **Reply #22 on:** April 03, 2006, 02:15:01 PM »

If you shoot the 40mm directly perpendicular to the boats beam you'll get much better 'grouping'. Same for the osty.
If your PT's engines are dead you can see the effect rather easily by turning the boat shooting the gun at 3 or 9 o'clock.

The effect is reduced if you are underway full throttle. I've found that hitting another PT is easier if you make your course parallel with his and shoot from as close to the 3 or 6 position as possible. Hitting from 2-2.5k is not that difficult using this method.

Pei · « **Reply #23 on:** April 04, 2006, 11:07:36 PM »

Doubt the sea effects it in game as wave effects etc. aren't modelled.

Keiler · « **Reply #24 on:** April 08, 2006, 10:44:03 AM »

Quote

Originally posted by Tails
I think he may of been thinking something different than what he typed. A boat DOES move in four directions. Pitch, roll, yaw, and elevation from a combination of wave action, maneuvering, and possibly recoil effects (I dont know how this is modeled in AH2, dont drive boats enough). Maybe thats what was intended?

Yeah I should have written "degrees of freedom" (dont ask me why I didnt in the first place, I dont know), of course there are only three axis', but 6 DOF

.

With the 4 DOF I described I picked the "clean" ones and neglected translatoric movement on the sea-plane.

Matt

gripen · « **Reply #25 on:** April 08, 2006, 02:12:39 PM »

I got training for the 40itk/38 which is the standard Bofors 40mm AA canon as designated in Finnish army. We had no problems to hit 2x2m targets at ranges around 1000m or more. Usually it took couple shots to "find" the target (some error in sights because the sights and the mechanical calculator were for aerial targets) but once it was found, it was possible to hit continously. Not bad for a 40 year old canon.

gripen