If a spacecraft of volume V was leaking air of density rho as a mass flow rate of m-dot can you calculate the time for all the air to leak out using (rho x V)/m-dot? rho would decrease and m-dot should decrease but by what amount would the ratios change? Can you use (rho x V)/m-dot then double it? Or because it is a vacuum the air is leaking into as the density decreases the velocity of the air escaping increases so the time would not need to be doubled?
Cheers for any help but really I just want to get a big vacuum chamber and collect data on this, if anyone has one and can do the experiment please let me have the data :)