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回報翻譯問題
討論區規矩與守則
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This diagram illustrates it nicely: http://images.tutorvista.com/cms/images/83/tangential-velocity.png
As you lift off, you carry this tangential velocity as - if you like - lateral momentum. Notice how if you launch a rocket, not particularly high, say a few hundred meters, you don't stray too far from where you've launched (providing youve launched vertically and you havent used a parachute etc). There are two explanations for this, the first, as most people have said, Kerbin rotates beneath you. However, you also carry the lateral momentum that's the same as the surface of Kerbin. So, this doesn't fully explain why, it's a little more than just that Kerbin rotates. BUT it's more to do with the fact as you thrust upwards your lateral momentum is decreasing. A force acting in the opposite direction to the momentum will cause a change in the momentum, so my guess would be that maybe air resistance or the like, decreases your lateral momentum, hence the planet rotates faster than you.
As far as I'm aware this is the reason and may provide a bit more satisfaction rather than just "kerbin rotates". Either way, if you're interested in reading further, I'd suggest researching "circular motion" - if you haven't done so already.
Hopefully that helped a little :D
Edit: Grammar, formatting, etc.
Perhaps it's due to the fact that while on the launch pad, the tip of my rocket travels through space slighty faster than the bottom of the rocket? But wouldn't that make me go East?
I believe my post above addressed this, because you carry some lateral momentum, you will not be going vertically upwards, also unless you are pointing perfectly vertically, gravity will act on you and will path will arc aswell.
Either that or I've misunderstood the question :P
i can assure you it doesnt have anything to do with aerodynamics. at least not in kerbal. Its suprisingly simple.
As you thrust up your lateral velocity doesnt change unless you thrust in the opposite direction from your lateral velocity. It is just overcome by your vertical velocity. It's still there, theres just not enough to make a huge difference to your direction of travel.
Yes, I only read your post after I posted mine right after. I type slow...
So I'm guessing it's just you have two velocities, your first being your vertical, the other being your lateral velocity. Once you've build up speed, your vertical velocity magnitude will be > your lateral velocity magnitude. Hence the resulting vector will be at an angle to the surface of Kerbin. That makes more sense, I think you're right :)
Also to keep in mind, if you're at a high altitude, your lateral velocity is the same as Kerbin's but your angular speed, i.e arcs per unit time, is less, thus relatively, Kerbin rotates under you supposedly 'quicker'. if you catch my drift.
I already tried that. The rocket is very basic and perfectly symetrical. No matter how I roll it in the VAB, it will always deviate to the West.