coriolis effect?

[Raythemanroe]

How many of you 1000 yard shooters have honestly experienced coriolis effect ? I'm wondering how the earths rotation can effect a bullets impact by ten inches if you were to shoot East or turned and shot West? I don't know how fast the earth is supposed to rotate (maybe 1000 mph) to cycle everyday? One would assume coriolis effect would have the same laws of physics on air traffic right? Shouldn't the earth outrun some jets/planes going the same direction as the rotation and those going the opposite direction have sooner arrival times? Don't laugh or maybe a little



Ray

 

[JRS]

:

 

[expiper]

I think the shooter (no matter what the distance ) needs to worry more about the wind than the rotation of the earth,,(so do the airlines ),,,Roger
PS,,I just happened to be in the house on this beautiful Sunday afternoon,,getting more bullets and thought I would reply,,,,get out and shoot more and you will learn more,,,

 

[Raythemanroe]

I think the shooter (no matter what the distance ) needs to worry more about the wind than the rotation of the earth,,(so do the airlines ),,,Roger

Probably true


Ray

 

[MrMajestic]

I would think that it applies to long range hunting/sniping than target shooting. Sometimes the hunter/sniper doesn't get a second chance.

 

[Raythemanroe]

How many folks just let a ballistic calculation app do the math?


Ray

 

[M-61]

"Shouldn't the earth outrun some jets/planes going the same direction as the rotation and those going the opposite direction have sooner arrival times?"

If it weren't for the atmosphere, yes. Straight up (really a bit easterly), get up high enough, wait for your destination to appear as the earth screams by beneath you, and then down.

 

[CharlieNC]

At 1000 no wind = no hold off.

 

[savagedasher]

With a tuner I never have to worry ;D ;D ;D ;D Larry

 

[Raythemanroe]

"Shouldn't the earth outrun some jets/planes going the same direction as the rotation and those going the opposite direction have sooner arrival times?"

If it weren't for the atmosphere, yes. Straight up (really a bit easterly), get up high enough, wait for your destination to appear as the earth screams by beneath you, and then down.

When a satellite goes up, does it orbit around the Earth or is Earth just screaming by? The moon orbit around the Earth or does earth go screaming by? Don't laugh


Ray

 

[chkunz]

If you really want to understand coriolis effect read Bryan Litz's book, "Modern Advancements in Long Range Shooting" page 191. He does a good job of explaining this, what it is and what it is worth on the trajectory of a bullet.

 

[chkunz]

"Shouldn't the earth outrun some jets/planes going the same direction as the rotation and those going the opposite direction have sooner arrival times?"

If it weren't for the atmosphere, yes. Straight up (really a bit easterly), get up high enough, wait for your destination to appear as the earth screams by beneath you, and then down.

When a satellite goes up, does it orbit around the Earth or is Earth just screaming by? The moon orbit around the Earth or does earth go screaming by? Don't laugh


Ray

I am not laughing, I have spent a life time learning about these things and find the physics very interesting. If you really are interested in these questions, start with a high school physics book. Most folks really do not understand what you are asking but I find the physics fascinating. And it really is not that difficult to understand at the concept level, the equations can get tedious but the concepts are not difficult. It sounds like you might enjoy learning about these things. Take care, Clyde.

 

[NealC]

I attached a picture of a ballistic calculator drift due to coriolis. It is around 14" drift at 1000 yards for my 308.

 

[NealC]

Coriolis makes the bullet drift because it is spinning. You will get on opposite drift whether the bullet spins clockwise or counter clockwise.

 

[M-61]

"Shouldn't the earth outrun some jets/planes going the same direction as the rotation and those going the opposite direction have sooner arrival times?"

If it weren't for the atmosphere, yes. Straight up (really a bit easterly), get up high enough, wait for your destination to appear as the earth screams by beneath you, and then down.

When a satellite goes up, does it orbit around the Earth or is Earth just screaming by? The moon orbit around the Earth or does earth go screaming by? Don't laugh


Ray

At no time was I laughing. These are questions that are well founded. The below link does a good job explaining AND showing an answer to your question. they do a far better job than I.
https://en.wikipedia.org/wiki/Geostationary_orbit

 

[simplerider]

The Gunwerks website has a pretty good video about explaining coriolis effect. Long range university I believe they call it. Several other good videos as well.

Neal, I think you are referring to spin drift.

 

[hogpatrol]

 

[Tom Thomson]

Ray
Good question abt the satellite. If you notice, satellites are all launched to the east. This is the direction the earth is spinning so the rocket has less work to do to attain escape velocity. "Escape velocity" is a bit misleading cuz you don't escape the gravitational pull of earth but you can attain enough centrifugal force to balance it if you go fast enuf. Geo-stationary satellites "hover" above the same spot on earth but they are way way up and going really really fast. That's all I know and I may have made up some of that.
tommyt

 

[M-61]

Quote from Tom Thomson:

" If you notice, satellites are all launched to the east. This is the direction the earth is spinning so the rocket has less work to do to attain escape velocity."

That's correct and the closer you can get to the equator to launch the less work for the rocket also.


tommyt....I don't think you made any of that up!!

 

[chkunz]

Ray
Good question abt the satellite. If you notice, satellites are all launched to the east. This is the direction the earth is spinning so the rocket has less work to do to attain escape velocity. "Escape velocity" is a bit misleading cuz you don't escape the gravitational pull of earth but you can attain enough centrifugal force to balance it if you go fast enuf. Geo-stationary satellites "hover" above the same spot on earth but they are way way up and going really really fast. That's all I know and I may have made up some of that.
tommyt

One point of clarification, orbital velocity is the velocity required for achieving orbit around some mass like the earth and escape velocity is the velocity required to escape the gravity of some mass like the earth. These velocities will be different for different masses. Also, Most satellites are launched to the east because as you say this takes advantage of the rotation of the earth and takes less energy. Most but not all, for example if you are going into a polar orbit you may not choose east unless it is for other reasons.