Re: Size of the proposed "new" space vehicle?

On Sun, 25 Sep 2005 16:19:21 -0500, Katipo wrote
(in article <uvEZe.14282$iM2.1182534@xxxxxxxxxxxxxxx>):

>
> "R.Glueck" <glueck@xxxxxxxxx> wrote in message
> news:dh6kh5$ln3$1@xxxxxxxxxxxxxxxxxxxxxxxxx
>> Since the "new" space vehicle is based on the Apollo spacecraft, I have to
>> wonder:
>> -Yeah, a crew of three can live quite nicely in it on a 10 day venture
>> to the moon and back, but what about a 7 month trip to Mars? I think the
>> astronauts will go nuts in that tiny enclosed space.
>
> I have been wondering about this too. In my view the proposed CEV isn't
> suitable for Mars missions for just this reason. I'm surprised they are even
> suggesting it!

That's one reason NASA is baselining an EOR approach this time around.
The mission module for a Mars mission will necessarily be much larger
than the CEV capsule itself. An EOR approach allows launching the crew
on one vehicle (CEV + Stick) and allowing the larger, heavier
mission-specific modules to be launched on the SDHLV. This would
undoubted include a large cruse-phase habitat, lander vehicle, and
trans-Mars/trans-Earth propulson stage(s). In fact, a Mars mission
will probably end up requiring at least two SDHLV launches, perhaps
more.

> Also is the proposed lander really a viable option for Mars missions? While
> it may be powerful enough to get Astronauts back off the lunar surface, is
> it really going to be powerful enough to get them back off Mars?
>

Why do you believe the same lander would be used for both missions?

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.

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