I can see your logic about not wearing a spacesuit if his aim was to save oxygen, Leviticus. But surely using the airlock without a spacesuit would mean losing a whole airlock-full of oxygen when he opened the outer door. If he did it that way, both he and all the air would get sucked out instantly into the vaccuum of space.
Whereas if he wore a space suit (with just half a minute's worth of oxygen in the breathing cylinder) he'd be able to pump the airlock's oxygen back into the inner part of the rocket ship before opening the outer door and jumping out.
He wouldn't be able to do it this second way without a space suit, of course, since the moment he sent all the airlock's oxygen back into the inner part of the rocket ship, he'd die, and wouldn't then be able to open the outer door at all.
So I think the second way - ie: wearing a space suit with just enough oxygen in the tank to give him time to empty the airlock's oxygen into the rocket, open the outer door and jump - would be the least oxygen-wasting way to leave the rocket.
Of course, the most oxygen-saving way of killing himself would have been to simpy kill himself on board without leaving the rocket at all. But that would be less poetic, more unpleasant for his colleagues to discover, and somehow a more blatant act of suicide (which, as discussed, was something Hergé felt obliged to shy away from portraying.) Still, given how close to death they get at the end, especially Haddock, saving every last possble atom of oxygen would have been more sensible of Wolff. (Or would the stress of finding his dead body have increased everyone's breathing rate to the point that it cancelled out the benifit of the saved oxygen?)
Anyway, to get back on topic, I think he would be wearing a space suit, and could theoretically have been picked up by a flying saucer if they were very quick about it! |