Alright, I tried this game.
First rocket I made, the Doomcan, did a plain dolphin dive straight into the ground, thus living up to its name.
The next one, the Dumbcan, managed to fly somewhat far, but awkwardly and not very straight up. When it was time to activate the next stage, it totally lost control and eventually crashed.
Sadly, the Doombottle was a perfectly adequate design in all respects, flying up to 40980 meters and landing the astronauts safely in the nearby ocean.
EDIT: After testing it again, it appears the Doomcan is capable of flying into its own exhaust, causing it to explode before even hitting the ground.