I’ll agree with the other posters that being on a spaceship maps better to being on a ship than it does being in an airplane, but I would add to it one other maybe overlooked factor: Robert Heinlein served in the navy and clearly had a massive hard-on for it and included all sorts of pro-war and pro-military themes in his work, and that all came from the POV of the navy and included lots of specifically naval elements to what was presented, and he was a big enough presence in the field that it left a mark that lasts to the present day.