Lessee...have it here somewhere <img src="/images/icons/tongue.gif" /><br /><br />Ah...got it. <br /><br />Block 1A: 3 passenger ISS<br />Block 1B: pressurized cargo<br />Block 2 (Lunar): 4 passengers<br />Block 3: (Mars): 6 passengers<br /><br />Attached image & above info is the CEV family as posted before the 5 meter redesign. <br /><br />Of course the Block 1A variant, if they even build it, would have a limited lifetime given the Orion flight schedule has its last flight to ISS happening in 2016. After that it's COTS or Soyuz. <br /><br />IMO better to go straight to a reconfigurable Block 3 akin to what SpaceX is doing with Dragon. The recent Orion cockpit animation showed something akin to this configuration so maybe...<br /><br />OTOH I've thought since it was announced that Dragon was Lunar flyby capable it might be the better design; an unpressurized "trunk" in the SM, one re-configurable "can" for all missions, up to 7 passengers (same as shuttle) etc.<br /><br />I'd also like someone to explain why, with the properly provisioned/powered SM, a flyby capable capsule like Dragon couldn't do Lunar orbit missions like Orions at a fraction of the cost? <div class="Discussion_UserSignature"> </div>