Delving Deeper into NASA’s DSH configurations and support craft

[Chris Bergin]

Here's part 2 from the awesome DSH presentation on L2, via an article written by Chris Gebhardt:

http://www.nasaspaceflight.com/2012/04/delving-deeper-dsh-configurations-support-craft/









Part 1 is available here:
http://www.nasaspaceflight.com/2012/03/dsh-module-concepts-outlined-beo-exploration/

Specific thread for Part 1:
http://forum.nasaspaceflight.com/index.php?topic=28481.0

[Paul Howard]

Another great article!

Love the flexcraft. Looks like something out of 2001 Space Odyssey.

[robertross]

That's a great article Chris G.

They really are taking to heart the lessons learned on ISS and aplying them to this DSH concept. I especially liked this note:
“Large crew quarters with no through traffic at quiet end of module."

Remembering the ISS 'float through' tours I've seen, the ambient noise (though specifically in the lab areas, but this being a much small craft) was (imo) excessive.

But to me, personally, there are two sections I think they are light on: medical and spares.

"Crew Health Care (medical) increases from 73 kg in the 60-day version to 173 kg in the 500 version."

"Personal provision weight increases from 80 kg to 100 kg between the two versions. Housekeeping expendables increase from 20 kg to 166 kg, operational spares from 100 kg to 175 kg, maintenance equipment from 40 kg to 80 kg, and EVA provisions from 30 kg to 60 kg."

[RocketmanUS]

At least the single person FlexCraft can be tele-operated.
During a solar particle event would a radio signal go between the FlexCraft and the operator?

Edit:
Would the life support be able to handle 8 crew if needed ( take on crew from another DSH if it were disabled, send two for added safety if this is possible )?

What configuration are they planning on using for the 500 day mission version, with the node 1 or with out it?

[Robotbeat]

....
What configuration are they planning on using for the 500 day mission version, with the node 1 or with out it?

Both options are under consideration.

In either case, to make the 60-day DSH into the 500-day one, you (mostly) just add an extra MPLM-derived module.

[apace]

How the 400 days of Orion fits to the 500 days of the habitat?

[Robotbeat]

How the 400 days of Orion fits to the 500 days of the habitat?

Modify it for 500 days. It doesn't use peroxide propellant like Soyuz, so that should be a little easier.

[Atlan]

I don't want to sound like a commercial amazing people, but is there a particular reason why the do not even consider Bigelow modules? I think especially for a 500 day mission a little more room would definitely be a significant advantage.

[Thorny]

Another great article!

Love the flexcraft. Looks like something out of 2001 Space Odyssey.

And the MMSEV looks like it came straight from "Star Trek: The Motion Picture".

[Patchouli]

This looks like it could eventually form the basis of a modular spacecraft that could eventually lead up to something like Nautilus-X.

I think they should make a centrifuge an option maybe look into several types from short arm to a full wheel type section.

The MMSEV and FlexCraft are esp cool.

[Robotbeat]

This looks like it could eventually form the basis of a modular spacecraft that could eventually lead up to something like Nautilus-X.

I think they should make a centrifuge an option maybe look into several types from short arm to a full wheel type section.

The MMSEV and FlexCraft are esp cool.

Yeah, that's one reason I like the Node version, even though it's slightly more massive. It's a lot more flexible, can even put a Cupola on it along with the SEV. Also makes adding, say, a Bigelow module of some sort a lot easier. Also could add a Cygnus (or Dragon) for extra storage if needed (though you'd have to qualify them for long-duration... and you'd need an arm, though that wouldn't be needed if you added the Cygnus/Dragon at ISS).

Not only that, but it's actually higher TRL, thus it can happen sooner and cheaper and with less uncertainty.

[mike robel]

Another great article!

Love the flexcraft. Looks like something out of 2001 Space Odyssey.

And the MMSEV looks like it came straight from "Star Trek: The Motion Picture".

Actually, look at your Disney Man in Space DVDs.  Its there.

[clongton]

I don't want to sound like a commercial person, but is there a particular reason why the do not even consider Bigelow modules? I think especially for a 500 day mission a little more room would definitely be a significant advantage.

It's a matter of going with what you've got. The ISS Destiny module design and capabilities are known quantities while the Bigelow inflatables, for all their advertisement, are still nonexistent. That will likely change as Bigelow becomes operational and his modules become known entities, but for now a bird in the hand is well worth 2 in the bush.

[Prober]

Another great article!

Love the flexcraft. Looks like something out of 2001 Space Odyssey.

And the MMSEV looks like it came straight from "Star Trek: The Motion Picture".

Actually, look at your Disney Man in Space DVDs.  Its there.

Yes it was a good idea then and now...see the cone shaped device.

[Ronsmytheiii]

Does anyone know if the Boeing Lab/Hab module tooling still exists?

[RocketmanUS]

Batteries for the DSH.
What are their individual mass, size, volts, amp hour rating?
What temperature range can they operate at?
How much of a charge is left after standing for 30 days unused from a full charge?
Will the SEV or single person FlexCraft use the same type of batteries as the DSH?

[robertross]

Batteries for the DSH.
What are their individual mass, size, volts, amp hour rating?
What temperature range can they operate at?
How much of a charge is left after standing for 30 days unused from a full charge?
Will the SEV or single person FlexCraft use the same type of batteries as the DSH?

All TBD at this stage most likely, but comparable ratings & capabilities taken from ones used on ISS (or other existing spacecraft)

correction: from (a snippet of) L2 information: DSH power systems are either off the shelf, or MPCV derived

[renclod]

Batteries for the DSH.
What are their individual mass, size, volts, amp hour rating?

1.11 kg
53 mm dia x 250 mm height
3.6 V
50 Ah nominal

What temperature range can they operate at?

Charge + 10°C to + 35°C
Discharge 0°C to + 40°C

[SAFT VES 180 from the Smitherman presentation *you* linked 4 days ago in the other thread... page 24]

[RocketmanUS]

Batteries for the DSH.
What are their individual mass, size, volts, amp hour rating?

1.11 kg
53 mm dia x 250 mm height
3.6 V
50 Ah nominal

What temperature range can they operate at?

Charge + 10°C to + 35°C
Discharge 0°C to + 40°C

[SAFT VES 180 from the Smitherman presentation *you* linked 4 days ago in the other thread... page 24]

Thank you
Just found a web page on the batteries and a PDF
http://www.saftbatteries.com/Produit_Space_VES_cell_range_301_58/Default.aspx#DL2

PDF
http://www.saftbatteries.com/doc/Documents/space/Cube712/VES%20180.e9cf5d8f-3cbd-4921-8ac0-89d7b13bd0c0.pdf

[RocketmanUS]

Could the 500 day version be used for an EML2 starter station with the node 1?
Add remote manipulator arms , two I think would be better than one. Out that far from LEO if one did not work then we would have the other one to use.