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re: Serious question concerning shooting at a moving target (vid link added)
Posted on 5/5/16 at 4:41 pm to mack the knife
Posted on 5/5/16 at 4:41 pm to mack the knife
quote:
we have any engineers on the OB?
Engineer here, but I work with cranes and structures so high velocity projectiles (kinematics)isn't really my thing. But if I were to take a guess, the cross wind theory mentioned above sounds right. The bullet is subject to 3 dimensional motion so resistance (air and gravity) in all three directions must be considered.
0
Posted on 5/5/16 at 4:41 pm to DownshiftAndFloorIt
At some point the bullet will stop traveling forward or same direction of copter travel. It may hit the ground before that happens but it has no propulsion to keep it moving.
I'm thinking of shooting perpendicular to direction of chopper travel.
I'm thinking of shooting perpendicular to direction of chopper travel.
Posted on 5/5/16 at 4:46 pm to X123F45
Let's say, for simpler understanding, that both the chopper and the target vehicle are moving at relatively the same speed, and the chopper is perpendicular to the trucks travel but moving in same direction as the truck. I would think the vehicle/chopper speeds would negate each other so the only other factor (beside distance/bullet drop)would be accounting for the winds effect on the bullet, thus leading the target whatever needed distance.
As to putting you guys old ladies in the cab for the test...
As to putting you guys old ladies in the cab for the test...
Posted on 5/5/16 at 4:48 pm to TigernMS12
quote:
Yea the bullet rises
Only if the barrel is pointing up (which it typically is when firing at most target). Physics dictates a ballistic projectile fired parallel to the ground will begin to drop immediately, barring any upward wind, following the exit from the barrel
Bullet flight path video
Posted on 5/5/16 at 5:15 pm to AUTimbo
Shut up and shoot!
Posted on 5/5/16 at 5:27 pm to TigernMS12
quote:
Yea the bullet rises. Go look at any trajectory for a 5.56 or like round. I'm not sure if subsonic bullets rise and fall, but all super-sonic bullets do to some degree.
We got another one, fellas.
Posted on 5/5/16 at 5:44 pm to Propagandalf
Should I break out my drawings from a few years back?
ETA: Maybe this will help the bullets rise issue.
ETA: Maybe this will help the bullets rise issue.
This post was edited on 5/5/16 at 8:20 pm
Posted on 5/5/16 at 9:03 pm to kengel2
the correct answer would be to use tracers...
eventually you will figure it out.
eventually you will figure it out.
Posted on 5/5/16 at 9:07 pm to Pepperidge
quote:
the correct answer would be to use tracers...
Now this is an answer I can get behind...or ahead of... you get my drift....
Posted on 5/5/16 at 9:12 pm to Pepperidge
quote:
the correct answer would be to use tracers...
eventually you will figure it out.
Up vote
Posted on 5/6/16 at 7:29 am to Cracker
Rotor downwash will have an effect on the bullet depending which way they are turning. But at 80 yards probably wouldn't matter. We us to aim right and high if on the right side, and left and low if on the left side.
Posted on 5/6/16 at 7:56 am to AUTimbo
Best answer for sure
It's just something you would either need to practice or have a computer do for you.
Back in my college days I would have worked all of this shite out and posted the exact answer
It's just something you would either need to practice or have a computer do for you.
Back in my college days I would have worked all of this shite out and posted the exact answer
Posted on 5/6/16 at 7:57 am to Nodust
quote:
Shooter moving faster than target, aim behind target.
Target moving faster aim in front.
This is the answer.
Just go ask the guys that shoot pigs out of helos where they aim.
Posted on 5/6/16 at 8:08 am to TigernMS12
quote:
quote:
So you are saying the bullet rises even then when it comes out of the barrel??
Yea the bullet rises. Go look at any trajectory for a 5.56 or like round. I'm not sure if subsonic bullets rise and fall, but all super-sonic bullets do to some degree.
Oh shite, he may have swallwered it
Posted on 5/6/16 at 8:10 am to AUTimbo
quote:. I'm gonna need a picture.
and the chopper is perpendicular to the trucks travel but moving in same direction as the truck.
Posted on 5/6/16 at 9:09 am to tigerfoot
Blue line = POA
Red line = bullet path
Light blue = time when bullet is fired
Green = bullet impact with target
Does not account for wind which wouldn't be significant at 100-200yds.
Distance between red line and blue line at target is roughly equal to distance traveled by helo while bullet is in flight.
Posted on 5/6/16 at 9:20 am to civiltiger07
Yeah I get that, but I was trying to picture perpendicular and moving in the same direction. I would call that parallel.
Thanks for the pic, I learned a lot of that throwing beer bottles out windows.
Thanks for the pic, I learned a lot of that throwing beer bottles out windows.
Posted on 5/6/16 at 9:26 am to AUTimbo
quote:
AUTimbo
quote:
you get my drift
i saw that
Posted on 5/6/16 at 9:32 am to tigerfoot
You would just need to add elevation and hold over the same. This is why you see miniguns instead of bolt actions on the side of helos.
YouTube knowledge
That picture is way better than what I had in paint, I like my drawings though.
YouTube knowledge
That picture is way better than what I had in paint, I like my drawings though.
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