Hey Mr Wonderful since we are talking about the Earth's rotation. Please tell me why Coriolis effect only works on bullets and toilets and not airplanes.
Try again! The Coriolis effect has no discernable effect on toilets, so flush that stupid idea.
Have you ever seen a couple of people in uniforms go into a little room at the front of the 'plane (the pointy end)?
Well that's the driver and assistant, though people in the know call them both pilots, with the boss being the Captain and the other is other the First Officer.
These two have thingos a bit like steering wheels, though they call them yokes, that rotate and move back and forth.
Now the pilot flying the aircraft steers the plane to keep it on course irrespective of any crosswinds and other disturbances.
Oh, I forgot to mention Coriolis! No matter, it's so trivial compared to these crosswinds and other disturbances that we can forget it.
But, very long range bullets are a different matter. I have never yet seen a pilot on a bullet steering it and for high velocity rounds cross winds have some effect, but nowhere near as much on a much slower moving aircraft.
The Coriolis is no more than the projectile moving north or south with the earth's surface velocity at the firing point imposed on it.
WhIle it moves north or south the projectile retains its original E-W velocity, but the earth's W->E surface velocity changes, altering the trajectory relative to the earth slightly.
In any case, the Coriolis effect is very minor out to a couple of thousand yards, being no more than say 4" at 1000 yds.
It only becomes significant in long range artillery and these days the targeting computer sorts out the details.
Don't let it bother you though.
It isn't the cause of your irregular trajectory, that's from sneaking a drink when the grownups weren't looking.
But really, kiddies like you should leave the drinks and the guns to the adults. You can learn all about both when you grow up.
If you do want to read about it from a completely unbiased source, read this,
Long Range Shooting: External Ballistics – The Coriolis Effect