Saving or not?

[Wupti]

If you fire your ultimate first your rockets hits at a timing where the Airship cannot possibly dodge/kite the ultimate completely. Lane or not makes no difference for this mechanic.

Edit: The only difference for lane is that your movement [b]before casting your ultimate might be a giveaway. But you can fix that by faking the same movement over and over again.[/b]

After you use your ultimate there is a small delay before you can use your rocket.
Assuming the airship stays in a safe range and always kite when approaching you by zigzag in unknown patterns you should never be able to hit it.
And if you in some crazy way should be able to hit it the kill potential is very low since it can always back when it see your animation (duo to greater speed).
I'd like to take this discussion elsewhere since it has nothing to do with this thread. Or we can test it in a game