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I'd keep ion craft for use as probes. A two stage interplanetary probe--with a nuclear thermal stage and an ion drive payload--would achieve very great speeds and get outside the solar system pretty quick.

#154 Re: Interplanetary transportation » China eyeing new HL - Agency Expecting approval this year » 2006-10-27 11:52:51

publiusr

I was kinda hoping they would go the R-56 route--keep existing hypergolics for awile--and make a 40 ton to LEO LV. That might have been cheaper than abandoning hypergolics altogether and having all new infrastructure.

#155 Re: Science, Technology, and Astronomy » Silent Spring After All? » 2006-10-27 11:48:25

publiusr

It might be just because a lot of folks aren't into beekeeping anymore.

#156 Re: Science, Technology, and Astronomy » Space Elevators, Ho! - carbon nanotube growth breakthrough! » 2006-10-27 11:46:30

publiusr

http://www.nanotech-now.com/news.cgi?story_id=08268
The link should work now.

Space elevator--a good payload for Direct
http://www.lulu.com/content/440980

#157 Re: Science, Technology, and Astronomy » Antimatter & matter - chemical reaction ?! » 2006-10-27 11:45:05

publiusr

I never would have guessed this to be possible.

#158 Re: Science, Technology, and Astronomy » an interesting graph of nanotech research » 2006-10-27 11:44:11

publiusr

A great find--that link is.

#159 Re: Science, Technology, and Astronomy » 500 km wide impact crater discovered in Antartica » 2006-08-22 18:25:07

publiusr

I can't imagine.

#160 Re: Human missions » Ares and Ares » 2006-08-22 18:24:02

publiusr

What the Russians are talking about:

http://www.novosti-kosmonavtiki.ru/cont … 3/30.shtml
http://www.novosti-kosmonavtiki.ru/phpB … &start=990

Buran
http://www.novosti-kosmonavtiki.ru/phpB … &start=825
http://www.buran.ru/htm/os-120.htm

http://www.novosti-kosmonavtiki.ru/
http://www.cosmoworld.ru/eng/nk-online/
http://www.roscosmos.ru/

#161 Re: Human missions » ISS - Beware the Bear » 2006-08-22 18:07:11

publiusr

Looks like an R-7 LV almost.

Finally the alt.spacers see the need for bigger rockets.

#162 Re: Human missions » Ares and Ares » 2006-08-22 18:01:48

publiusr

Chemical is good.

Some nice images:

http://www.nasa.gov/pdf/151420main_aresV_factsheet.pdf
http://www.astronautix.com/lvs/magnum.htm

From http://forum.nasaspaceflight.com/forums … 45&start=1
http://simcosmos.planetaclix.pt/

Space Vehicles: A History in Patents
http://www.dataviewbooks.com/sapcecover.jpg
http://www.dataviewbooks.com/space-a.jpg
http://www.dataviewbooks.com/space-b.jpg
http://www.dataviewbooks.com/space-c.jpg

Over 260 pages of spacecraft designs from US government patent documents.

http://forum.nasaspaceflight.com/forums … entid=6541
http://forum.nasaspaceflight.com/forums … 6&posts=52

#163 Re: Human missions » Save-A-Stage » 2006-08-22 17:44:42

publiusr

But the HLLV is the Model T. Or should be.

#164 Re: Human missions » Reusable LSAM » 2006-08-22 17:43:30

publiusr

We do not need to use the failed ISS assembly method to build moonships.
It's a question of money.. Mir was assembled in space and it did quite ok.. ...

No--it was cramped, and was to be replaced by Polyus style Mir 2 modules-- 80-90 tons each)--abandoned because they invaded a muslim country and became overextended. And they took it out on their space efforts

Sound familiar?

#165 Re: Interplanetary transportation » Space Elevator news » 2006-08-22 17:38:10

publiusr

That's a riot.

Space elevator concepts showing up at a convention of junior birdmen--without one shred of hope of ever fielding an LV big enough to place one tether segment up in orbit.

I would laugh were it not so sad.

#166 Re: Interplanetary transportation » Followup on the Heim Drive » 2006-08-22 17:34:03

publiusr

Pixie dust.

#167 Re: Human missions » The First to Mars - Who will it be? » 2006-08-17 11:06:57

publiusr

Private industry alone will not win space.

Most of these space conventions are made up of a lot of groups selling and nobody buying.

Alt.space incest, I call it.

You get a few venture capitalists who forget the lesson of spacelift is TVA, not MSN. Spacelift is blue-collar thrust, not white collar computing. Venture types will put money in low infrastructure internet start ups that need only a good programmer. But the paltry funds that would cause such a venture to lift off is worthless when trying to build real spacecraft.

So space start ups get small sums in fits and starts--use them for fine glossy ads--which they just pass around to each other or the rare investor, who glances at them before placing them in the circular file..13.

Remember, the mark of a 'good businessman' is his ability to (while eating that steak dinner you just bought him) look you dead in the eye and say--

"No."

And off he goes to invest his money in EXXON.

And--to be perfectly fair...wouldn't you?

#168 Re: Human missions » Save-A-Stage » 2006-08-17 10:59:29

publiusr

Big simple rocket on a compact pad.

You just can't beat it.

#169 Re: Human missions » Reusable LSAM » 2006-08-17 10:57:54

publiusr

We do not need to use the failed ISS assembly method to build moonships.

Russian needs to either bring back Energiya or stick to comsat launches.

#170 Re: Human missions » NASA Exploration Roadmaps » 2006-08-17 10:50:50

publiusr

Good points. NASASPACEFLIGHT has alot of professionals compared to many other sites--like the Space.com Discussion forum with its libertarian yahoos (strange seeing that Dobbs is hardly a free trader).

Here is a thought. Perhaps a two RS-68 craft like Magnum and existing SRBs?

it is an entry-level HLLV at 80 tons--but it might get under contract before an admin. change.

So the question is:

Should the space community:

I. Support the stick and hope Ares V can survive to come later, or

II. Support Magnum, make do with 80 tons--and evolve that craft with additional solid hardpoints and growth options for that--but get this Stumpy+ under contract before we get a President /Congress liable to be more hostile to VSE and kill it altogether (With the next NASA Chief a Goldin head whose biggest LV will be Delta II again.)

At least with Stumpy or Magnum--we would be getting experience putting engines under the ET--and a wide ET may allow wide biconic craft to come along--and allow CEV to remain at 5.5--or perhaps even grow...

Thems the choices.

If I had my druthers, I'd take Ares V--but if it is Magnum...or nothing?

I'd go with the latter. Somebody get Bill Eoff back.

#171 Re: Interplanetary transportation » J-2S vs RLX vs RS-68r+ » 2006-08-17 10:42:12

publiusr

It looks as though this J-2 will use channel wall like the larger RD-0120 from the Energiya Core block.

#172 Re: Interplanetary transportation » Ares I (CLV) - status » 2006-08-17 10:38:44

publiusr

I wonder what Rutan will say when the mere abort tests of the Stick wind up faster than his main craft...

#173 Re: Interplanetary transportation » Orion (CEV / SM) - status » 2006-08-17 10:36:58

publiusr

Oh bah humbug, the GAO has never liked any NASA project, and neither Jeffy or the SFF will be happy no matter what NASA comes up with.

Perfectly stated.

#174 Re: Human missions » Reusable LSAM » 2006-08-11 16:43:53

publiusr

I like your HLLV HLV (hybrid) architecture. Those winged craft would replace EELVs on their won with Magnum/AresV for the rest.

Here is how I would undertake such a scheme.

Get Ares V built at all costs.

I would do as you suggest, and then expand a bit

Consider large HLLV nuclear-electric craft under a black budget that can also be used as probes

http://www.astronautix.com/craft/intaltug.htm

http://www.astronautix.com/stages/erta.htm

http://www.astronautix.com/engines/11b97.htm

These can come later and are a bone thown to the all-science folks. This will be for cargo only and reusable. Place a station in Lunar orbit with small micro-landers for quick sample returns with the station as a safehouse.

The moon base would be near any fissure, evacuated lava tube found and filled with air.

The nuclear tug can take 100 tons to Geosynch--or the moon perhaps. Ares launched the tug and the payload in two flights.

Direct missions with capsules atop Ares V.

A lot of mass can be moved very quickly--and the science mongers get JIMO out of the deal too.

#175 Re: Human missions » Save-A-Stage » 2006-08-11 16:32:34

publiusr

Mag-launched SSTO.
Big craft with major ground infrastructure.

HLLV
Bigger, simpler craft with mimimum pad.

Advantage, Ares V

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#151 Re: Interplanetary transportation » BIG advantages of the 4-segments SRB vs. the 5-segments SRB » 2006-10-27 11:58:17

#152 Re: Interplanetary transportation » India wants a TSTO RLV » 2006-10-27 11:55:49

#153 Re: Interplanetary transportation » Methods to Lunar Orbit » 2006-10-27 11:54:25