There some sort of wiggly swirly intangible thing holding the wings in place in the trailer, so it's clearly just force field tech like in the letterbox that no one complains about.
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Little do you know about how often I think that those force field at the entrance corridor of space stations are stupid. I was very close to add those as an example in my first posting.
Yes, very stupid force fields being able to hold back gas while being completely non existent for space ships.
All that said. It's a game. So I guess everything is good and I just will frown a bit if I see some "illogical"* things in the game.
*) as in not aligned with the axioms of the game reality or not to my liking (aka, things I can't ignore)