Author Topic: SLS Development Stage UPDATE Thread (2)  (Read 700219 times)

Offline newpylong

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #60 on: 06/06/2013 07:29 pm »
As far as I know the SSMEs were last tested almost 10 years ago there [...]

Minor nit-pick: the last test firing of an SSME on Stennis Test Stand A2 was on July 29, 2009 (with a duration of 520 seconds).  So just less than four years ago.  ;)

But we're talking about A1 no?  Thanks for the info though, good to know :)
« Last Edit: 06/06/2013 07:30 pm by newpylong »

Online AnalogMan

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #61 on: 06/06/2013 08:42 pm »
As far as I know the SSMEs were last tested almost 10 years ago there [...]

Minor nit-pick: the last test firing of an SSME on Stennis Test Stand A2 was on July 29, 2009 (with a duration of 520 seconds).  So just less than four years ago.  ;)

But we're talking about A1 no?  Thanks for the info though, good to know :)

Ah sorry my mistake, thought the "there" meant Stennis in general.  Last SSME firing on A1 was September 29, 2006.

Online Chris Bergin

Re: SLS Development Stage UPDATE Thread (2)
« Reply #62 on: 06/09/2013 10:21 pm »
So per the RS-25 reference for Stennis testing, I've written an article mainly about the RS-25's planning during the last eight or so years.

http://www.nasaspaceflight.com/2013/06/engines-refused-retire-rs-25s-prepare-sls-testing/

Will give it a standalone, as I'm sure we'll get some non-SLS posts on that one.
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Online AnalogMan

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #63 on: 06/12/2013 01:52 pm »
Flight Software Development Units for SLS Core Stage Delivered to Marshall

The Space Launch System (SLS) avionics team at NASA’s Marshall Space Flight Center in Huntsville, Ala., has received all six of the Core Stage Flight Computer Development Units from The Boeing Company of Huntsville—the prime contractor for the SLS core stage, including avionics. The units will be used to develop the flight software for the SLS. The flight software development and testing has begun at Marshall’s Software Development Facility (SDF) in an effort to rapidly mature and ensure implementation of a safe and highly reliable avionics and software system.
(Image: NASA/MSFC)

http://www.nasa.gov/pdf/754370main_SLS_Highlights_May_2013.pdf

Offline woods170

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #64 on: 06/13/2013 10:04 am »
http://www.spacenews.com/article/civil-space/35754boeing-hires-mt-aerospace-of-germany-to-provide-structures-for-nasa%E2%80%99s-space#.UbmWiZFrOHM

Quote
Boeing Hires MT Aerospace of Germany To Provide Structures for NASA’s Space Launch System

MT Aerospace of Germany will provide large aluminum segments for the main-stage propellant tank of NASA’s future Space Launch System (SLS) under a contract with Boeing that MT announced June 12.

Under the contract, whose value was not disclosed, Augsburg-based MT, which is majority owned by OHB AG of Bremen, Germany, will provide panels measuring 3 meters by 3 meters for the SLS main stage propellant tanks.

Note 1: MT Aerospace also produces the booster casings and tank domes of the core and upper stages of the Ariane 5 launcher. And the forward skirt of the Ariane 5 core stage.

Note 2: Some people on this forum are on records as stating that SLS should be an all-American launcher. No such thing exists in today's world as the news item above indicates so clearly. By definition, launchers produced in the Western world today are international productions, with parts coming from suppliers all over the planet. That applies to SLS, but Ariane 5 as well, to name just a few examples.


Online sdsds

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #65 on: 06/13/2013 05:07 pm »
http://www.spacenews.com/article/civil-space/35754boeing-hires-mt-aerospace-of-germany-to-provide-structures-for-nasa%E2%80%99s-space#.UbmWiZFrOHM

Nearly "1,000 kilograms of liquid hydrogen and liquid oxygen." Oh my! Clearly a typo: 30% larger than Shuttle ET would be nearly 1,000,000 kg of propellant. It's a difficult fact to check, though, unless NASA has published the current figure somewhere?
« Last Edit: 06/13/2013 05:08 pm by sdsds »
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Offline newpylong

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Offline edkyle99

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #67 on: 06/18/2013 02:10 am »
http://www.spacenews.com/article/civil-space/35754boeing-hires-mt-aerospace-of-germany-to-provide-structures-for-nasa%E2%80%99s-space#.UbmWiZFrOHM

Quote
Boeing Hires MT Aerospace of Germany To Provide Structures for NASA’s Space Launch System

MT Aerospace of Germany will provide large aluminum segments for the main-stage propellant tank of NASA’s future Space Launch System (SLS) under a contract with Boeing that MT announced June 12.

Under the contract, whose value was not disclosed, Augsburg-based MT, which is majority owned by OHB AG of Bremen, Germany, will provide panels measuring 3 meters by 3 meters for the SLS main stage propellant tanks.
Note 2: Some people on this forum are on records as stating that SLS should be an all-American launcher. No such thing exists in today's world as the news item above indicates so clearly. By definition, launchers produced in the Western world today are international productions, with parts coming from suppliers all over the planet. That applies to SLS, but Ariane 5 as well, to name just a few examples.
Tell that to the U.S. citizens who will not be hired at Michoud.

These are their dimes going to Germany instead.

SLS is not a commercial rocket.  It is a national symbol.  It really has no other purpose.  It is built at taxpayer expense.  It should be built in the United States.

 - Ed kyle
« Last Edit: 06/18/2013 02:13 am by edkyle99 »

Offline Lars_J

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #68 on: 06/18/2013 05:20 am »
Note 2: Some people on this forum are on records as stating that SLS should be an all-American launcher. No such thing exists in today's world as the news item above indicates so clearly. By definition, launchers produced in the Western world today are international productions, with parts coming from suppliers all over the planet. That applies to SLS, but Ariane 5 as well, to name just a few examples.

Ahem. There actually is an all-american launcher, built with domestic parts & engines. (only international content is probably some electronic pieces) So it is possible. The Delta-IV is another example.
« Last Edit: 06/18/2013 05:21 am by Lars_J »

Offline QuantumG

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #69 on: 06/18/2013 07:21 am »
woods170 is technically correct. (The best kind of correct!)

I'm pretty sure the oil used to make the vast majority of parts, not to mention the fuel, of every launcher in the world comes from mostly the same place..
Human spaceflight is basically just LARPing now.

Offline woods170

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #70 on: 06/18/2013 09:39 am »
woods170 is technically correct. (The best kind of correct!)

I'm pretty sure the oil used to make the vast majority of parts, not to mention the fuel, of every launcher in the world comes from mostly the same place..

Not to mention raw materials for certain metallic materials used in SLS electronic components coming from China (Oh.. the horror! The horror!)  :D

Offline a_langwich

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #71 on: 06/18/2013 10:01 am »
woods170 is technically correct. (The best kind of correct!)

I'm pretty sure the oil used to make the vast majority of parts, not to mention the fuel, of every launcher in the world comes from mostly the same place..


What place is that?  The ground?  Country-wise, it probably comes from a pretty wide variety of places, but very different places for Chinese launchers than Russian launchers than American launchers.  Are you going to talk about the international manufacturers that made the workers clothes next? 

Online Chris Bergin

Re: SLS Development Stage UPDATE Thread (2)
« Reply #72 on: 06/18/2013 11:44 am »
Update thread. Not an Armwaving thread.
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Offline woods170

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #73 on: 06/18/2013 11:56 am »
Update thread. Not an Armwaving thread.

Sorry about that Chris. My 'Note 2' triggered this little OT exchange.

Back on topic please everyone. As you were.

Online Chris Bergin

Re: SLS Development Stage UPDATE Thread (2)
« Reply #74 on: 06/18/2013 12:02 pm »
We probably need a second thread for chatty stuff. I'll try and set that up later.

Now to find a Rammstein song title for my next SLS article ;)
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Offline spectre9

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #75 on: 06/18/2013 12:22 pm »
MT Aerospace owns the patent on spin dome forming technology yeah?

Perhaps this is the cheaper option?

Building new machines at Michoud under license might be too expensive right now.

SLS might be sucking up plenty of money but it's still a HLLV on the cheap.

Offline Lurker Steve

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #76 on: 06/18/2013 01:28 pm »
woods170 is technically correct. (The best kind of correct!)

I'm pretty sure the oil used to make the vast majority of parts, not to mention the fuel, of every launcher in the world comes from mostly the same place..


Not any longer. Thanks to Fracking, and Canadian shale oil, North America may soon be a net exporter of oil and gas, instead of an importer.

Offline Lurker Steve

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #77 on: 06/18/2013 01:34 pm »
http://www.spacenews.com/article/civil-space/35754boeing-hires-mt-aerospace-of-germany-to-provide-structures-for-nasa%E2%80%99s-space#.UbmWiZFrOHM

Quote
Boeing Hires MT Aerospace of Germany To Provide Structures for NASA’s Space Launch System

MT Aerospace of Germany will provide large aluminum segments for the main-stage propellant tank of NASA’s future Space Launch System (SLS) under a contract with Boeing that MT announced June 12.

Under the contract, whose value was not disclosed, Augsburg-based MT, which is majority owned by OHB AG of Bremen, Germany, will provide panels measuring 3 meters by 3 meters for the SLS main stage propellant tanks.

Note 1: MT Aerospace also produces the booster casings and tank domes of the core and upper stages of the Ariane 5 launcher. And the forward skirt of the Ariane 5 core stage.

Note 2: Some people on this forum are on records as stating that SLS should be an all-American launcher. No such thing exists in today's world as the news item above indicates so clearly. By definition, launchers produced in the Western world today are international productions, with parts coming from suppliers all over the planet. That applies to SLS, but Ariane 5 as well, to name just a few examples.



Actually, these segments seem sort of small, considering the diameter of the tanks. How many of these segments need to be welded together to make a single circumference of the tank ? Then you need to "stack" multiples of these together. Wouldn't it be easier to build the tank using larger sheets of Aluminum ??

Offline newpylong

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #78 on: 06/18/2013 01:55 pm »
Certainly not interested in reading about people's opinions on US vs non US fabricated parts in an update thread. There are dozens of other SLS threads to go back and forth on.

Offline a_langwich

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #79 on: 06/19/2013 12:45 am »
MT Aerospace owns the patent on spin dome forming technology yeah?

Perhaps this is the cheaper option?

Building new machines at Michoud under license might be too expensive right now.

SLS might be sucking up plenty of money but it's still a HLLV on the cheap.

3m x 3m isn't large enough to be a dome.

 

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