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Serious question concerning shooting at a moving target (vid link added)
Posted on 5/5/16 at 3:35 pm
Posted on 5/5/16 at 3:35 pm
On the OT there is a vid of a Brazilian police in a chopper shooting at a stolen truck (I'm guessing)
To any prior military or po-po types out there in the OB, just curious where one would have aimed in a circumstance like this?
Chopper moving in same direction as moving truck. I'm guessing roughly 80-100 yds distance.
Any clue? TIA
To any prior military or po-po types out there in the OB, just curious where one would have aimed in a circumstance like this?
Chopper moving in same direction as moving truck. I'm guessing roughly 80-100 yds distance.
Any clue? TIA
This post was edited on 5/5/16 at 4:33 pm
9
Posted on 5/5/16 at 3:38 pm to AUTimbo
You'd have to judge speed.
The math is the same.
If we're approaching the truck catching up to it, I'm aiming right behind the driver/cab.
The chopper speed should carry the bullets into him.
At 80 yards though...it isn't really going to matter.
The math is the same.
If we're approaching the truck catching up to it, I'm aiming right behind the driver/cab.
The chopper speed should carry the bullets into him.
At 80 yards though...it isn't really going to matter.
Posted on 5/5/16 at 3:40 pm to AUTimbo
I would assume that if the chopper and truck are moving at the same speed, in the same direction (exactly) then your point of aim would be no different than stationary target with you firing from a stationary position as well. A bullet moving that fast at that short of a distance though, you are not likely to have to compensate much. Whatever compensation that would have to take place would depend on the choppers movements (direction and speed) relative to the truck, as well as the flight time of the bullet (distance between truck and chopper).
Just a disclaimer, I'm no expert on physics or anything, so I could be wrong.
Just a disclaimer, I'm no expert on physics or anything, so I could be wrong.
This post was edited on 5/5/16 at 3:42 pm
Posted on 5/5/16 at 3:48 pm to TigernMS12
we have any engineers on the OB? maybe they will chime in with the correct answer.
Posted on 5/5/16 at 3:48 pm to AUTimbo
At that distance it probably wouldn't make much difference unless there was a large difference in speed between the helo and the target. Ideally you have a great pilot, and it's as simple as putting rounds in the black on qual day.
Posted on 5/5/16 at 4:11 pm to X123F45
quote:
If we're approaching the truck catching up to it, I'm aiming right behind the driver/cab.
So you are saying the bullet rises even then when it comes out of the barrel???
Posted on 5/5/16 at 4:12 pm to AUTimbo
On the phone.
Short answer is you trail the target because normally the helo is moving faster.
Short answer is you trail the target because normally the helo is moving faster.
Posted on 5/5/16 at 4:14 pm to mack the knife
the bullit is moving with the chopper.... once it it fired it will still have that velocity.
This post was edited on 5/5/16 at 4:14 pm
Posted on 5/5/16 at 4:18 pm to CarRamrod
False. It will be like shooting with a crosswind equal to the speed of the chopper.
ETA: Assuming you were shooting straight out of the side of the chopper perpendicular to the direction of travel
ETA: Assuming you were shooting straight out of the side of the chopper perpendicular to the direction of travel
This post was edited on 5/5/16 at 4:19 pm
Posted on 5/5/16 at 4:18 pm to TigerDeacon
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.
Posted on 5/5/16 at 4:18 pm to AUTimbo
quote:
Serious question concerning shooting at a moving target
When it comes to women and children, just don't lead them as much.
Posted on 5/5/16 at 4:25 pm to AUTimbo
At 80-100 yards with a large rifle round, I'd aim where I wanted to hit. Youre not gonna be going fast enough to need to lead it at that short of a distance
Posted on 5/5/16 at 4:28 pm to Clyde Tipton
I knew that was going to pop up somewhere in the responses..LOL 
In the vid the chopper is moving along with the vehicle off to one side, thus the shooter is basically shooting perpendicular to the choppers/trucks line of travel.
I'm thinking Downshift is correct here...the speed of the chopper is like shooting into a crosswind of the same speed, thus compensating by leading the target the appropriate windage for, say a 50 mph crosswind.
LINK
In the vid the chopper is moving along with the vehicle off to one side, thus the shooter is basically shooting perpendicular to the choppers/trucks line of travel.
I'm thinking Downshift is correct here...the speed of the chopper is like shooting into a crosswind of the same speed, thus compensating by leading the target the appropriate windage for, say a 50 mph crosswind.
LINK
This post was edited on 5/5/16 at 4:32 pm
Posted on 5/5/16 at 4:29 pm to mack the knife
It's all about relative speed. If they are travelling faster than you it would be like you were standing still aiming at a target moving away from you at whatever the speed difference, slower would be like them moving toward you at the speed difference and zero speed differential would be like shooting at a stationary target.
Of course it would probably be like shooting from a bouncing vibrating platform if you on the helicopter.
ETA: Didn't watch the video so I made an improper assumption. Now it becomes about relative velocity (speed and direction) rather than simply speed, the crosswind analogy is pretty good, as the bullet already has the speed of the helicopter imparted onto it, so you would had to lead to account for the crosswind effect if the car and chopper are travelling at the same speed. If not you have to account for speed differential and take the crosswind effect into account.
Of course it would probably be like shooting from a bouncing vibrating platform if you on the helicopter.
ETA: Didn't watch the video so I made an improper assumption. Now it becomes about relative velocity (speed and direction) rather than simply speed, the crosswind analogy is pretty good, as the bullet already has the speed of the helicopter imparted onto it, so you would had to lead to account for the crosswind effect if the car and chopper are travelling at the same speed. If not you have to account for speed differential and take the crosswind effect into account.
This post was edited on 5/5/16 at 4:38 pm
Posted on 5/5/16 at 4:29 pm to AUTimbo
Shooter moving faster than target, aim behind target. Target moving faster aim in front. I have no clue how to account for cross wind.
Posted on 5/5/16 at 4:33 pm to Nodust
The forward travel speed of the helicopter is what your "crosswind" basically is. Once you put angles and elevations into it than it changes some, but it's just relative motion of the gun barrel, bullet, target, and air.
Posted on 5/5/16 at 4:33 pm to Nodust
Let's settle this scientifically.
Somebody go rent a helicopter.
Somebody provide rifle & ammo.
Somebody volunteer the use of their truck.
I'll volunteer my wife to drive the truck.
Somebody go rent a helicopter.
Somebody provide rifle & ammo.
Somebody volunteer the use of their truck.
I'll volunteer my wife to drive the truck.
This post was edited on 5/5/16 at 5:26 pm
Posted on 5/5/16 at 4:34 pm to AUTimbo
quote:
thus compensating by leading the target the appropriate windage for, say a 50 mph crosswind.
Sp you completely ignore the overtake velocity of the chopper?
That can't be right.
Then again... I have been drinking.
Posted on 5/5/16 at 4:35 pm to dawg23
quote:
I'll volunteer my wife to drive the truck.
Mine can ride shotgun
Posted on 5/5/16 at 4:40 pm to DownshiftAndFloorIt
quote:uumm no. of course the velocity will slow due to the drag through the air. just like having a crosswind. But what i said is correct. if you are tranlating in a direction and fire a bullet, the bullet will continue to translate.
False. It will be like shooting with a crosswind equal to the speed of the chopper.
ETA: Assuming you were shooting straight out of the side of the chopper perpendicular to the direction of travel
this is just like the whole dropping a bullet and firing one but ad a 3rd dimension. drag slows the bullet going forward and sideways.
quote:that is if you assume you are and the object are stationary and you have a crosswind...... yes easier to calculate on paper.
I'm thinking Downshift is correct here...the speed of the chopper is like shooting into a crosswind of the same speed, thus compensating by leading the target the appropriate windage for, say a 50 mph crosswind.
This post was edited on 5/5/16 at 4:43 pm
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