Are those spacecraft diagrams really correct? The Apollo, CST100, and Orion look pretty close to the same size to me.
Another but no scale [/img]
EDIT: Here is a better scale comparison of Apollo, Orion, CST-100, and Dragon: (excluding service modules/trunks)
Also this is the best side-view of the Atlas V and Starliner I can find.
I just found a really good spacecraft comparison here: http://ciudad-futura.net/category/agitprop/ilustracion-e-infografia/
Quote from: whitelancer64 on 01/27/2016 04:11 pmI just found a really good spacecraft comparison here: http://ciudad-futura.net/category/agitprop/ilustracion-e-infografia/Thanks! Here are the volume to mass ratiosSoyuz: 1.45 L/kgShenzhou: 1.75 L/kgCST-100: 0.92 L/kgDragon 2: 0.83 L/kgOrion: 0.92 L/kgFederatsiya: 1.18 L/kgThe winner is Shenzhou!
Are these as-launched masses including LAS and/or trunk?
Quote from: AncientU on 02/07/2016 10:28 pmAre these as-launched masses including LAS and/or trunk?Including trunk and excluding LAS towers, since they are ejected early in ascent.
Quote from: Steven Pietrobon on 02/08/2016 05:07 amQuote from: AncientU on 02/07/2016 10:28 pmAre these as-launched masses including LAS and/or trunk?Including trunk and excluding LAS towers, since they are ejected early in ascent.Which puts dragon at a disadvantage since the LAS is an integral part of the space craft. So the comparison is not entirely fair.
Which puts dragon at a disadvantage since the LAS is an integral part of the space craft. So the comparison is not entirely fair.
A metric I care about is which design has the greatest volume to mass in orbit. [...]:Soyuz: 3.5 m³Shenzhou: 4.67 m³CST-100: 1.57 m³Dragon 2: 1.43 m³Orion: 4.88 m³Federatsiya: 4.25 m³The winner is Orion and the loser is Dragon 2!
I think the "loser" in your comparison above probably has almost all its pressurized volume available for crew to move around in. The "winner" might have lots of the other two types. Is that your sense of these as well?
Quote from: Elmar Moelzer on 02/15/2016 12:06 amWhich puts dragon at a disadvantage since the LAS is an integral part of the space craft. So the comparison is not entirely fair.How is it not fair? Taking your LAS all the way to orbit is a big penalty. For the other vehicles, they have a large service module which is used for abort after LAS separation. That's part of what these comparisons are showing. A metric I care about is which design has the greatest volume to mass in orbit. Another metric is how many tonnes per crew member. Numbers below:Soyuz: 2.41 tShenzhou: 2.67 tCST-100: 1.71 tDragon 2: 1.71 tOrion: 5.31 tFederatsiya: 3.6 tThe winners are CST-100 and Dragon 2 and loser is Orion! Which scheme has the greatest volume per crew member?Soyuz: 3.5 m³Shenzhou: 4.67 m³CST-100: 1.57 m³Dragon 2: 1.43 m³Orion: 4.88 m³Federatsiya: 4.25 m³The winner is Orion and the loser is Dragon 2!
Is that assuming the full complement of 7 for CST 100 and Dragon 2?