I couldn't get it to work trying that with the propulsion props anyway lol. I think it would work, but size would have to be too large. I've been trying to keep things simple, as you should see how spectacularly I fail at even trying to make a catapult lol. did manage a simple bomber, though, so it's a start. I'm not so great at these kinds of things, probably why I have the moon full of Kerbals due to failed rescue attempts, I think I have more up there than on the ground... lol.