The Coriolis effect and snipers.

What's the Coriolis effect?

It is an apparent deflection of moving objects from a straight path when they are viewed from a rotating frame of reference. In layman's terms, it means that long range fire (artillery shells and sniper rounds) will not appear to fly in a straight line from the shooter to the target because of the rotation of the Earth on its axis. Rather, the round or shell will appear to curve. In actuality, the shot is flying in a straight line but the turn of the Earth moves the target so it will look as if the round or shell is curving. Artillery gunners and snipers are well-trained to compensate for the Coriolis effect by actually not aiming directly at their target, but off to the side so that by the time the bullet makes it to the target distance, it has "curved" to hit the target.


Ask any military personnel from any country, any hunter, enthusiast shooter, everyone is going to confirm the Coriolis effect.

The above proves the earth is rotating, putting a deep wound in your theory.

yea i mean havent you guys ever played call of duty 4? come on...

I actually just watched a sniper movie and I got the idea...

I'm somewhat of a beginner gun nut.

Call of Duty would be a good example if it weren't created by the BLASTED CONSPIRATORS!

Was the sniper movie "Shooter" good movie

And we all know how realistic movies are, right? 

Yups. Shooter was good though. And i think i remember them talking about coriolis effect in the film

Are you going to deny snipers are real because they were in the movie as well, markjo?


And yes, it was Shooter.

Those sniper movies are so retarded its not funny. That is some retarded shit if i ever saw it. They get worse and worse , the 3rd one was so retarded i thought i was retarded myself.

Are you going to deny snipers are real because they were in the movie as well, markjo?

No, I'm not denying that snipers exist.  I just doubt that the "Hollywood Physics" used in the movie have anything more than a passing resemblance to physics in the real world.

You mean like these?

You mean like these?

No, that's "Comic Book Physics".  Compared to comic book physics, Hollywood physics seem to make sense. 

I'm talking about the Coriolis effect that's taken consideration in high range artillery and sniper shots during wars...

You're trying to jack the topic somewhere else.

Explain why all artillery takes the Coriolis effect into consideration if the earth isn't rotating?

What's the Coriolis effect?

It is an apparent deflection of moving objects from a straight path when they are viewed from a rotating frame of reference. In layman's terms, it means that long range fire (artillery shells and sniper rounds) will not appear to fly in a straight line from the shooter to the target because of the rotation of the Earth on its axis. Rather, the round or shell will appear to curve. In actuality, the shot is flying in a straight line but the turn of the Earth moves the target so it will look as if the round or shell is curving. Artillery gunners and snipers are well-trained to compensate for the Coriolis effect by actually not aiming directly at their target, but off to the side so that by the time the bullet makes it to the target distance, it has "curved" to hit the target.


Ask any military personnel from any country, any hunter, enthusiast shooter, everyone is going to confirm the Coriolis effect.

The above proves the earth is rotating, putting a deep wound in your theory.

The curving of the trajectories of artillery rounds from all calibers is due to the spin the projectile is given before leaving the barrel. This spin makes the projectile a gyroscope and any torque tending to tumble the projectile in the vertical plane actually changes its axis of rotation in the horizontal plane. This is seen as deviation from the straight line of the projectile's projection in the horizontal plane.

Why does it seem curved then?

Also, artillery rounds are spin stabilized only initially after which fins are deployed to stabilize it. (US Patent - 4460137)


Also see: http://en.wikipedia.org/wiki/Coriolis_effect#Rotating_sphere

no. The angular velocity of the projectile changes direction.

Like my ass...

This isn't angular velocity, it's Coriolis.

Like my ass...

This isn't angular velocity, it's Coriolis.

Angular velocity has nothing to do with the Coriolis efffect? 

I should really look at what I'm typing. 

Why, are you typing anything interesting?

It would appear that bridget does not actually know an answer, and just came up with it now the issue has been raised. Good work RE'ers!

 

Yes.

Now stop going offtopic.

Quote from: bridget on June 01, 2009, 10:21:48 AM

The angular velocity of the projectile changes direction.

Doubtless. What's your point?

http://en.wikipedia.org/wiki/External_ballistics

Look up point 4.

Quote from: KillaBee on June 02, 2009, 02:11:54 AM

Quote from: bridget on June 01, 2009, 10:21:48 AM

The angular velocity of the projectile changes direction.

Doubtless. What's your point?

http://en.wikipedia.org/wiki/External_ballistics

Look up point 4.

Look up point 4.4

You guys only read what you want. 4.4 applies for sniper, doesn't it?

Applies for everything that shoots long range.

Also, the gyroscopic drift deflects the projectile with an insignificant amount. 23 inches to 1.90 inches, depending on the weight of the projectile.

In artillery, 23 inches don't matter. The Coriolis effect is a massive deflection.

Applies for everything that shoots long range.

Also, the gyroscopic drift deflects the projectile with an insignificant amount. 23 inches to 1.90 inches, depending on the weight of the projectile.

In artillery, 23 inches don't matter. The Coriolis effect is a massive deflection.

Where did you come up with these figures? And 'massive' is such a quantitative term.

Quote from: ForgedInStone on June 02, 2009, 10:46:07 AM

Applies for everything that shoots long range.

Also, the gyroscopic drift deflects the projectile with an insignificant amount. 23 inches to 1.90 inches, depending on the weight of the projectile.

In artillery, 23 inches don't matter. The Coriolis effect is a massive deflection.

Where did you come up with these figures? And 'massive' is such a quantitative term.

The table in Wikipedia.

I used "massive" because it sounds dramatic. 

Still, look at the link you posted, there you will find how much projectiles get deflected.

hiya 

just wanted to ask why the southern hemisphere provides opposite deflection from the northern hemisphere in RET

So?

Anybody?