What is the total pressurized ISS volume?

[PJay_A]

After Node 3 is attached, assuming two Soyuz and one Progress parked, what will be ISS' total pressurized volume? When the Russian Side is mostly finished (addition of MPL, the two mini labs, node module, and the docking module), what will the total be? Will the two planned Russian power modules have pressurized components? If so, where are we at with the total with that added? When Orion modules start servicing, will Soyuz still be attached? If so, one or two?

More questions... How long will the Japanese Transfer Vehicle stay attached? How often will they be launched? Should we count that in our pressured volume total? What about Orion's volume in our total? Oh, and the volume of that transfer vehicle contracted to SpaceX added to our total count?

How does this total compare with previous space stations Skylab and Mir?

 

[JonClarke]

When complete the ISS will have a volume of ~1000 m3, exclusive of docked spacecraft. The ATV and HTV have volumes of ~30 m3, Souyz 10 m3, and Orion 15 m3. With three Russian and two US docking ports this means that 1 ATV, 2 Soyuz, 1 HTV, and 1 Orion could be docked at a time, giving an additional 95 m3. Depending on the final copnfiguration an extra Soyuz and Orion/Dragon might be able to be docked, giving a total of 120 m3 of docked volume.

Mir had a final volume of 350 m3 and Skylab 285 m3. The ISS has almost twice the volume of bothj combined.

 

[tadpoletriker]

That still leaves unoccupied about four or five "common berthing mechanisms".
There was a sentence in "Space" piece on the ATV that the last MPLM flown might be left on one of them.

John

 

[aaron38]

I remember an old NASA quote that the ISS would have about the same internal volume as a 747. I'm pretty sure that included all the Russian lab modules and the hab module however.