[cinFLA]

Um, so propellor-driven locomation would actually work in a perfect vacuum?

Where did you come up with that outrageous conclusion?

[sourcery]

Where did you come up with that outrageous conclusion?

It seemed to be the best interpretation of the point of your question. If that is not what you meant, perhaps you could clarify?

[PatriotGames]

Where did you come up with that outrageous conclusion?

I think that what they want to hear you say is that aircraft, ships, etc do not get "pushed" through the air, they get "pulled" through the air by the vacuum created forward of the proplusion regardless of the physical location of the propulsion unit on the craft in question.

At least, that's what I was taught. :-)