From: mikkelhaaheim@gmail.com   
      
   Sorry, I don't know of any on line calculators off hand. For what you want, I   
   think you need a fairly long but narrow corridor, with a 1 m hole at one end   
   of the corridor. The astronaut should be closer towards the end with the hole.   
   This way, the hole    
   is large enough for a semi-explosive decompression, the length of the corridor   
   provides a large supply of air to push the astronaut, and to keep the   
   outgassing going enough for momentum to build up. The narrowness of the   
   corridor will allow her to block    
   a fair amount of that air so it is more difficult to simply blow past her   
   without imparting some momentum on her. The hard part will be explaining why   
   there is such a long stretch of corridor without sealed bulkheads.   
   Rough estimate: the width of the coridor should be no more than 1.5 m, and the   
   deck height no more than 1.8 m to 2 m. The length behind her should be at   
   least 100 m... Shorter if it is branches off to lateral corridors in the   
   section behind her, or if    
   the coridor opens into a large chamber... Essentially, you want to funnel'a   
   large volum'of air behind her, and have her act as a kind of blockage to that   
   funnel. You want her to be about  5 m or so from the hole, giving the air time   
   to act on her body.    
   Again, you have to explain the lack of bulkhead doors. Perhaps borrow a page   
   from the Titanic: no one thought anything would be able to penetrate the   
   extremely thick hull, so they figured that partitioning would be too costly of   
   an unnecessary expense.   
   Keep in mind, I am not doing the calculations here. This is not even back of   
   the envelope... But it should give you a rough idea of the kind of situation   
   you need.   
      
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