G
gunsandrockets
Guest
"Figures 16, 17, and 33 all show the BNTR with the "ECRV"."<br /><br />Figures 16, 17 and 33 all refer to the old Mars architecture plan except as modified by use of BNTR. The description of one of the vehicles as "piloted lander" should have made that obvious. The piloted lander carries the crew from Earth to Mars in the old architecture.<br /><br />The vehicle I refered to in Figure 29 is for the new architecture where the 'piloted transfer vehicle' carries the crew both to Mars and then back to Earth. This vehicle is also shown in greater detail in Figure 30 on page 39. A detailed breakdown of the mass carried by this architecture is show in table A-5 on page 47 of the report. There is only one ECRV and it is part of the unpiloted 'cargo lander' vehicle, the 'piloted transfer vehicle' does not have an ECRV.<br /><br />"It is not clear from the ESAS summary whether the CEV the crew returns in is one that they dock with the MTV in, or whether the DAV also has a CEV as the crew module."<br /><br />Actually it is clear, and I would think detailed enough to satisfy anybody.<br /><br />http://www.spaceref.com/news/viewsr.html?pid=19067<br /><br />"The ESAS reference Mars mission utilizes a Block 3 CEV to transfer a crew of six between Earth and an MTV at the beginning and end of the Mars exploration mission. A Block 3 CEV CM and SM is launched by the CLV into an orbit matching the inclination of the awaiting MTV. The CEV is first injected into a 55x296-km altitude orbit while the MTV loiters in a circular orbit of 800- to 1,200-km altitude. It then takes the CEV up to 2 days to perform orbit-raising maneuvers to close on the MTV, conducting a standard ISS-type rendezvous and docking approach to the MTV. After docking, the CEV crew performs a leak check, equalizes pressure with the MTV, and opens hatches. Once crew and cargo transfer activities are complete, the CEV is configured to a quiescent stat