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#101 Re: Interplanetary transportation » Altair - Lunar Lander (LSAM) - status » 2008-03-07 03:43:23

So nice of you to remind me of the Doctor Who TARDIS which was small on the outside but ever so large on the inside...

unfortunately, Doctor Who is not a NASA engineer... smile

The only reason for a large cabin is for long term stay and since this is the sortie mission stays with not much returning to orbit there is no need for it to be overly large. It is better to have the cargo down mass capability for building a base of the future....

assuming they really want to spend so much money to build a lander with so limited functions, then, it's unclear why they're building a so large Orion (that needs a bigger than necessary rocket to fly) despite, the latter, should accomplish a similar purpose

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#102 Re: Interplanetary transportation » Altair - Lunar Lander (LSAM) - status » 2008-03-07 03:39:17

It's clearly not "phone-booth" size as it will hold four astronauts wearing spacesuits.

maybe, they will change it, but, now, comparing the images and the known Altair dimensions, the crew cabin actually IS sligtly larger than a phone-booth

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#103 Re: Interplanetary transportation » Altair - Lunar Lander (LSAM) - status » 2008-03-06 18:34:37

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apart its, old-looking, BAD design, the latest Altair concept shows a TOO little (phone-booth-sized) ascent-stage's crew cabin:

http://www.ghostnasa.com/posts/025badaltair.html


025badAltair2.jpg

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#104 Re: Interplanetary transportation » Ares V (CaLV) - status » 2008-03-06 18:33:03

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HOW they can released so detailed plans, while, in the SAME time, one of their officials says in an interview that THIS Ares-5 is largely underpowered, so, it needs deep changes? (and new calculations of everything about it)

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#105 Re: Interplanetary transportation » in my opinion both Ares-I and Ares-V could NEVER fly once!!! » 2008-03-06 18:28:40

by 2012 or so when Ares I becomes operational

it can't happen since the J-2X will be not ready for that date

Mr. Bigelow has some great orbital structures but no private launch vehicle. And SpaceX (the closest to achieving anything) have launched a very small payload to LEO.  With plans for some larger craft some time in the future.  No one else has done anything of note as far as I'm aware.

true, but, the (every day more) long Ares rockets' timeline is giving good chances to new.space companies to win the competition

Indeed the Chinese are the only ones who stand even a moderate chance of putting something the size of the Ares I into space ahead of the Ares I.

that's sure for me, and I agree that an Ares-5 like target is too much for to-day's new.space companies, however, the Ares-1 payload is a goal they could reach

If that wasn't bad enough putting people on top of rockets increases the complexity immensely.  Now you have to design a vehicle that they can survive in and a way for it to safely re-enter.  Much more difficult than a simple satellite launch.

true, but they can do that with some help/join ventures with aerospace companies and agencies (the way Bigelow seems do with LockMart)

The second cold reality is that space-flight is not going to be profitable any time soon.  SpaceX may be able to fight its way into the launch market, but the market for vehicles as big as the Ares I is pretty much limited to government contracts (which are the majority of contracts anyways).

it's only an "egg or chicken" like problem, a "commercial space" never borns if no one starts build and launch cheaper "commercial rockets"

You state that the 'Ares-I could NEVER fly once!'  How about if it does you buy me a six-pack of my favorite beer, and if it doesn't I'll get you one?  Game?

ok, but you have not read the full article since, my claim is that, the current designed Ares-1 can't fly, while, a modified Ares-1 "may fly", so, which "Ares-1" you refer to?

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#106 Re: Interplanetary transportation » Ares I (CLV) - status » 2008-03-02 14:11:29

The burn rate, and hence burn time, is a function of the surface area and how fast the fuel burns per area. So, you could have two identical boosters, one with a fast and one with a slow burning fuel, and the slow-burning one will burn longer.

you're right, but the SRB-5 needs a propellents that burns FASTER to add more thrust (as expected) ... if the new shape adds no extra-thrust, there is not any reason to to change the current shape

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#107 Re: Interplanetary transportation » Ares I (CLV) - status » 2008-03-02 13:58:09

I've changed the signature and the post colors... however, I feel that are NOT "colors" the true reason why so many peoples on so many forums post so many (angry) critics "Direct"-ed against me... smile

#108 Re: Interplanetary transportation » Ares I (CLV) - status » 2008-03-02 09:24:06

5 Segment SRB Test at Thiokol - YouTube video 3:27 mins

sorry, but this is NOT the real 5-segments SRB but only the 4+1 segments test of which I talk here and in the August 12, 2006 update of my July 28, 2006 "Why the 5-segments SRB can't work" article:

http://www.gaetanomarano.it/articles/011srb5.html

and this is the link to the NASA article reporting the 4+1 segments SRB test:
http://www.nasa.gov/centers/marshall/ne … 3-186.html

this 4+1 SRB test was made with standard segments, then, WITHOUT any new propellent grain and/or shape

#109 Re: Interplanetary transportation » Ares I (CLV) - status » 2008-03-02 07:45:01

The latest Ares V design shows burn time of the 5 segment motor at 125.9 seconds.

the full 5 segments motor has NEVER (really) "burned" (LOL)

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#110 Re: Interplanetary transportation » Ares I (CLV) - status » 2008-03-02 04:02:41

...use different propellant mixes...

the faster burn time is SURE with the increase of the propellent's burning surface, while, the "new mix" should (or should not...) add THRUST and NOT more burning time, so, the SRB-5 thrust could be higher than the +9% of the 4+1 SRB test (but I doubt it will reach the +25% the new SRB needs to compensate its +25% increase of weight) but the burning time MUST/WILL be LOWER

also, that means a lower 1st stage separation altitude and a lower acceleration at this separation, then, the Ares-1, with the SRB-5, absolutely needs (more than past) an SSME-class 2nd stage engine or TWO J-2X (or my "J-2Y" superengine)

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#111 Re: Interplanetary transportation » Ares I (CLV) - status » 2008-03-01 16:47:15

It will change the burn rate/thrust however.

that means its propellent will burn 9.1% faster, so, the burn time should fall from 128 seconds to 116.3 seconds

the thrust may be increased in a similar value, that means the (known) past SRB-5 had a lack of thrust, like the 4+1 SRB test has shown in 2003 and like I've said in my SRB-5 and Ares-1 articles (so, I was right, again... smile )

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#112 Re: Interplanetary transportation » Ares V (CaLV) - status » 2008-02-29 15:34:39

...seriously debate or discuss...

I do believe the ALL my discussions was/are/will be VERY serious

...makes you a spammer...

it's easier for you, since you accept everything space agencies and companies say and do without any critics hiding the fact that they do mistakes and often do changes in completely different ways than those they (and YOU) supported just a few days before... smile

...all you've done is state that all of NASA's plans have problems...

yes, it's easy to say that now... but the problem is that I've said that months and YEARS after the changes (from 2005) with detailed articles and posts about what and where are the problems, and MY solutions to them ...that very often are ALSO teh same problems that NASA admits and the solutions that NASA has adopted always AFTER my suggestions... smile

Thats by no means proof that you are an expert!

it's clearly IMPOSSIBLE, since, you are the only "expert" of the universe... smile smile smile

...your "problems" are simplistic and obvious ones...

so simplistic and obvious that no one have seen them before me... you included... smile

...separated lines that are hard to read, and many blank lines with just periods in them...

it's only your opinion, I think that spaces make it clear

...spammers should get banned...

you're right, then, please STOP post your useless comments here... smile

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#113 Re: Interplanetary transportation » Ares V (CaLV) - status » 2008-02-29 03:00:06

Texas sharpshooting

according to the sitemeter log, my sharpshooter's website has received several hundreds visits from Texas... mainly from Houston... smile

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#114 Re: Interplanetary transportation » Ares V (CaLV) - status » 2008-02-28 18:38:16

...space-spammer...

a space-spammer that always IS right... smile

just one example about the Ares-5

as reported by cIclops, the Loiter Time has been reduced from 14 to 4 days

that's possible since NASA has changed the order of launch from Ares-1 first to Ares-1 last to avoid the risk of a failures due to a "sum-of-delays":

http://www.ghostnasa.com/posts/016esaschanged.html

well, I've evidenced the problem TWO YEARS AGO in this article:

http://www.gaetanomarano.it/articles/004.html

and discussed in one of my first threads on the BAUT forum

then, maybe, the NASA engineers could have read my articles and posts since there was NO mention of this problem in the ESAS plan... smile

so, I hope that ALL "spammers" will write useful articles like me... smile

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#115 Re: Interplanetary transportation » Ares V (CaLV) - status » 2008-02-28 02:41:24

All appears well for Ares.  I definetely hope to hear more regarding the Ares I-X test.

not so well for the Ares-5...

http://www.aviationweek.com/aw/generic/ … nnel=space

and the Ares 1-X test may show too much acceleration (in some points of the flight profile) to be NOT compatible with human flights (and not possible to solve due to the solid rockets' nature) that's why I've suggested to do the 1-X test NOW than lose a further year to know that it's a bad choice

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#116 Re: Not So Free Chat » Will Yahoo founders start a New.Space company? » 2008-02-18 11:12:19

And nowhere in your 'article' does it say anything about NASA building a commercial launch pad.

in my article I suggest Yahoo to buy NASA (or part of it) but the "first step" to "buy" it (or part of it) is that NASA (or part of it) would be "on sale", then, NOW seems that part of NASA will (really) be on sale (or rent) to privates... smile

however, you're right, since I've discussed more about the "privatization of NASA" in other non-free-chat forums and blogs (than here) like this:

http://groups.google.it/group/sci.space … ee89e08c81

and this:

http://groups.google.it/group/sci.space … 1dea?hl=it

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#117 Re: Not So Free Chat » Will Yahoo founders start a New.Space company? » 2008-02-18 09:46:09

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more (too crazy to be true) "Free Chat" news...

NASA wants to sell part of KSC lands to "new.space" companies:

http://www.floridatoday.com/apps/pbcs.d … /802170349

that's nearly (or exactly?) what I've suggested (one week BEFORE them) in my "Yahoo to Space" article:

http://www.ghostnasa.com/posts/024yahoospace.html

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#118 Re: Not So Free Chat » Will Yahoo founders start a New.Space company? » 2008-02-09 18:55:24

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If Microsoft will succeed to buy Yahoo, its founders should earn $4 billion cash, so, could they use that money to start (also) a New.Space company?

http://www.ghostnasa.com/posts/024yahoospace.html

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#119 Re: Interplanetary transportation » Ares I (CLV) - status » 2008-02-06 03:43:23

...that's not cost effective...

that's true only for the first (experimental) Shuttle, not for future (better and cheaper) Shuttles if the latter will have airline jets like per-flight costs

...identified the interstage as 'dead weight' I noted...

no, it's the 2nd stage extra-mass

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#120 Re: Interplanetary transportation » Ares I (CLV) - status » 2008-02-06 03:03:27

composites materials

its seems that composites ADD weights smile since the early LockMart specs was around 8.5 mT while, now, the Orion is over 10.5 mT...

also, the 5th segment of the SRB, the SM, the SM propellent, the 2nd stage dry mass, the 2nd stage propellent and the LAS can't be replaced with "composites"

...shuttle has more dead weight...

that's true, but the Shuttle was designed to be REUSABLE several times per year and land on runway to save the (very expensive) retrieval costs of capsules (then it needs wings)

the fact that it has failed to reach is goal, is due to its high (and growing) MAINTENANCE cost, not to its wings

last, a "dead-weight" is everything launched WITHOUT a purpose (like the 5th and 6th seats in 99% of Orion missions) while, the Shuttle wings actually HAVE a purpose (you like it or not)

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#121 Re: Interplanetary transportation » Ares I (CLV) - status » 2008-02-06 02:15:57

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I think that the Ares-1 will be the first "dead-weight launcher" as explained in my article:

http://www.ghostnasa.com/posts/023deadweight.html

and that "dead-weight" launched will cost over $250 million for each Orion/Ares-1 launch

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#122 Re: Interplanetary transportation » An aborted Ares-1 launch may KILL dozens persons! » 2008-02-02 23:21:12

Supporting Shuttle as a cost effective operational vehicle.

the Shuttles are old and dangerous but their price-per-launch is very low if compared with the cargo/crew they carry to LEO

your writing is very hard to read

I can't do more about this point now (just hope to learn a better english soon)

colored text

I hope I can use colors, etc. (at least) on MY blog, while, on Space forums and blogs I no more use colors

if you know better than

I support my ideas like everybody does with their ideas and, write them on the web, allows everyone to post the critics they want

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#123 Re: Interplanetary transportation » An aborted Ares-1 launch may KILL dozens persons! » 2008-02-01 23:19:27

at greater cost then now

every "first of a series" costs too much... the first Shuttle, the first airplane, the first computer, etc. but it doesn't mean that ALL Shuttles MUST cost too much

future Shuttle may have manufacturing and fliying costs similar to an airline jet

The Ares I is a progressive rocket, and will do exactly what it is made for.  Bringing the crew for extrordinary missions to the unknown to their spaceships.

the Ares-1 (itself) has (and offers) NOTHING more other rockets nor can allow "extrordinary [sci-fi] missions" but just launch a few mT more than a DIVH, Proton, Ariane5, etc. ... it will carry astronauts to LEO ...just LESS than a Shuttle and at higher price than EVERY other spacecraft, like a Soyuz and (also) the Shuttle

POOR and EXPENSIVE days the LEO operations will face when the Shuttles will be retired and the Orion will fly!

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#124 Re: Interplanetary transportation » The [possible] solution for Ares-1 "vibrations" » 2008-02-01 10:28:42

No, the three EAP boosters exceed the SRB in thrust, not necessarily in lifting capacity.
Also, for other readers, ever notice the pattern that gaetano says NASA equipment will probably not work because we "don't know" it will, but defends all his ideas by saying we "don't know" that they won't.
The Atlas-V first stage for instance, which is roughly the same size as the pylon, weighs about 20MT by the way.

I give no data of payload, etc. since (clearly) everything must be calculated and tested

the "pylon" is not so big like an Atlas-V and it's not the only possible solution (other can be simpler and lighter) ... however, 20 mT is not a so big weight compared with an SRB or an EAP

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#125 Re: Interplanetary transportation » The [possible] solution for Ares-1 "vibrations" » 2008-02-01 05:37:31

would require a huge "pylon" to join the three Ariane SRBs together, that in turn would weigh so much it would never fly.

three Ariane EAP exceed the 5-segments SRB power, so, the can lift also that "pylon" (whose weight can't be known now)

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