kh1616

2nd Mar 2014

Avatar (2009)

Question: How come Trudi sometimes needs an oxygen mask but mostly doesn't - I can understand her not needing one (apparently, there is a glass partition between her and the rest of the helicopter; so whoever is with her has to wear masks, as they are behind the glass partition. But at one stage, Trudi and Norm are up front and Jake and Grace are behind them, and none of them are wearing masks - is the glass partition movable? And during the battle scene, you can see a bullet hole in Trudi's helicopter glass - shouldn't she need a mask now, as the outside air is getting in? Finally, how come Trudi needs a mask just after the home tree is destroyed and she and Norm and Jake and Grace (who was shot and is dying) escape and head for the Tree of Souls? What makes this time so special?

kh1616

Chosen answer: The cabin on the Aerospatiale SA-2 Samson is pressurised, and there are two sealed doors with windows separating it from the open cargo area. There are actually four seats in the cabin which is why Jake and Grace don't need masks. The cabin pressure is slightly higher than the atmosphere (+0.3 psi) which means that if there is a small rupture in the hull or canopy (such as a bullet hole) the oxygen will leak out rather than toxic gas leaking in.

Sierra1

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