Author Topic: SLS Development Stage UPDATE Thread (2)  (Read 480904 times)

Offline Khadgars

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #900 on: 06/25/2018 03:12 pm »
Quick question.  Is that hydrogen tank the STA or part of CS-1?

Offline Khadgars

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #901 on: 06/27/2018 10:08 pm »
Quick question.  Is that hydrogen tank the STA or part of CS-1?
CS-1 flight tank. It’s being relocated to an area where additional instrumentation will be installed. After that, spray-on foam insulation will be applied in Cell N.

Cool, thank you for the update.  Looking forward to seeing it during its Green Run testing.

Offline Hog

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #902 on: 06/28/2018 01:19 pm »
Quick question.  Is that hydrogen tank the STA or part of CS-1?
CS-1 flight tank. It’s being relocated to an area where additional instrumentation will be installed. After that, spray-on foam insulation will be applied in Cell N.

Cool, thank you for the update.  Looking forward to seeing it during its Green Run testing.
WHOA, SLS CS-1 Green Run testing, sound just great!  Making rain from Fire & Ice at the B-1/B-2 test stand, with 4 RS-25s thrusting at 109% AT THE SAME TIME.  I can hardly wait.

Here is a Saturn-V S1-C 1st Stage firing all five F-1 LOX/RP-1 booster engines at once, making 7.5 million pounds of thrust, in the B1/B2 test stand that is rated for 11 million pounds of thrust.
The Core Stage for SLS(SLS C/S-1) will produce about 2 million pounds of thrust from the 4 RS-25 sustainer engines.



FYI It took Boeing roughly seven to nine months to build the tanks and 14 months to complete a stage. The first stage built by Boeing was S-IC-D, a test model.

At this point in the SLS saga, I will entertain myself with something as "simple" as the upcoming RS-25 gimbal testing.

pics
1) S-1C being tested at Stennis
2) the 4 RS-25 engines which will be mounted to CS-1 for the Green Run testing a EM-1 flight
3) same RS-25 engines
Paul

Offline Khadgars

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #903 on: 07/02/2018 04:25 pm »
Do we have status/pictures of the CS-1 Oxygen Tank?

Offline Khadgars

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #904 on: 07/03/2018 09:37 pm »
Do we have status/pictures of the CS-1 Oxygen Tank?

I don’t have any pictures but I can give you a status. TPS application is complete.  It’s in Area 6 for integration of a handle full of components. After that’s done, it’ll be ready for sump installation and then Forward Join stacking (Forward Skirt + LOX Tanks + Intertank).

Awesome, thank you for the update. 

Offline catdlr

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #905 on: 07/06/2018 09:17 pm »
Preparing America for Deep Space Episode 17: Building the Future

NASA Johnson
Published on Jul 6, 2018

Important strides have been made in 2018 for NASA’s Orion, Space Launch System (SLS) and Exploration Ground Systems (EGS) programs. Teams across America and in Europe are developing and building the spacecraft, rocket and infrastructure necessary to send humans to deep space destinations including the Moon and beyond. Some major milestones include: Orion – parachute drop testing at the Yuma Proving Ground; Exploration Mission 2 crew module cone welding; Ascent Abort-2 crew module outfitting; crew module uprighting system testing; SLS – intertank test article transported to NASA’s Pegasus barge at Michoud Assembly Facility and arrival at Marshall Space Flight Center; core stage engine section structural tests; successful RS-25 rocket engine testing; EGS – Orion crew module recovery rehearsal; crew access arm install on the Mobile Launcher; Interim Cryogenic Propulsion Stage umbilical install; Firing Room 1 demonstration.

HD Archive link:  https://archive.org/details/jsc2018m000527_2018_Quarterly01_MXF

https://www.youtube.com/watch?v=pGpWuKaZKac?t=001



Tony De La Rosa

Online Chris Bergin

Re: SLS Development Stage UPDATE Thread (2)
« Reply #906 on: 07/16/2018 02:30 pm »
ARTICLE: Boeing finishes SLS LOX tank foam work, recovering from tube contamination issues -
https://www.nasaspaceflight.com/2018/07/boeing-sls-lox-tank-foam-work-recovering-contamination-issues/

by Philip Sloss.

I think that's 300 SLS articles now. And none of them are short. ;D


--

Reminder, this is an update only thread. No "a question" - use the discussion thread. Keeping the above as they were at least info heavy Q&A, but yeah....let's keep reading the thread titles.
« Last Edit: 07/16/2018 02:31 pm by Chris Bergin »

Offline rayleighscatter

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #907 on: 07/26/2018 12:13 am »
From NASA's site:

Quote
Engineers installed structural test hardware for NASA's deep space rocket, the Space Launch System, into a test stand at NASA's Marshall Space Flight Center in Huntsville, Alabama where testing recently began. The test version of the SLS intertank is being pushed, pulled and bent with millions of pounds of force to ensure it can withstand the forces of launch and ascent. The test hardware is structurally identical to the flight version of the intertank that will connect the core stage's two colossal fuel tanks, serve as the upper-connection point for the two solid rocket boosters and house critical avionics and electronics. Delivered to Marshall via NASA's barge Pegasus from NASA's Michoud Assembly Facility in New Orleans this spring, the intertank is the second of four core stage structural test articles scheduled for testing at Marshall. The test facility for NASA’s new exploration rocket was originally used for Saturn V rocket testing that enabled the Apollo Moon missions. The facility's special cranes and design features make it ideal for exposing large rockets and spacecraft to the extreme forces of spaceflight.

Offline ncb1397

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #908 on: 08/01/2018 07:13 am »


Quote
On July 24, forward skirt assembly was wrapped up with the installation of all its parts. As part of forward skirt testing, the flight computers came to life for the first time as NASA engineers tested critical avionic systems that will control the rocket’s flight. The construction, assembly and avionics testing occurred at NASA's Michoud Assembly Facility in New Orleans.
https://www.nasa.gov/exploration/systems/sls/first-sls-core-stage-flight-hardware-complete-ready-for-joining
« Last Edit: 08/01/2018 07:17 am by ncb1397 »

Offline AnalogMan

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #909 on: 12/07/2018 05:55 pm »
Stennis Reaches Readiness Milestone in Preparation for Space Launch System Testing
Calvin Thompson, Stennis Space Center - Dec7, 2018

NASA capped a six-year process this past month at Stennis Space Center near Bay St. Louis, Mississippi, setting the stage for testing the core stage of its new Space Launch System (SLS) rocket, designed to carry humans deeper into space than ever, including to the Moon and eventually Mars.

With completion of all major tasks and a successful high-pressure gas facility stress test, Stennis reached an all-but-complete state of readiness for SLS core stage testing on its B-2 Test Stand.

[...]

B-2 Test Stand

After the core stage for the first mission arrives to Stennis, it will be installed on the B-2 Test Stand and tested with its four RS-25 engines firing simultaneously, as during an actual launch. This hot fire before launch is called a “green run” test.

With a pair of propellant cold flows and a key gaseous nitrogen test, B-2 Test Stand Project Manager Barry Robinson declared the B-2 stand had achieved 98 percent readiness status for the testing. All that is left is a final water flow check, special test equipment to be installed upon arrival and some tasks to be completed just prior to arrival of the actual SLS “pathfinder,” Robinson said.

The pathfinder is a structural replica of the core stage that will allow technicians to practice core stage maneuvers and to perform a “fit” test to prove facility modifications will match and handle the actual flight stage.

[... continues]

https://www.nasa.gov/centers/stennis/news/Stennis-Reaches-Readiness-Milestone-in-Preparation-for-Space-Launch-System-Testing

Photo Caption:  NASA will install a Space Launch System flight core stage on the B-2 Test Stand (righthand side) for testing prior to its launch on Exploration Mission-1. Credits: NASA/SSC

Offline ncb1397

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #910 on: 12/14/2018 09:23 pm »
Some nuggets (or morsels) from the latest SLS newsletter.

Quote
As work on the booster segments for SLS’s first mission wrap up, teams at Northrop Grumman in Utah have begun casting the motors for the rocket’s second launch. Eight of 10 motor segments for the twin boosters have been cast with propellant, and testing and evaluation of the segments is under way.

Quote
The frangible joint assembly for the SLS launch vehicle stage adapter (LVSA) arrived at Marshall Space Flight Center Nov. 20 and is being mated to the LVSA, which connects the interim cryogenic propulsion stage (ICPS) to the core stage. The frangible joint assembly is designed to break apart, allowing the ICPS to separate from the LVSA.

https://www.nasa.gov/sites/default/files/atoms/files/sls_monthly_highlights_nov_2018_web.pdf

Offline catdlr

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #911 on: 12/15/2018 03:25 am »
NASA moves Hydrogen tank to Alabama for testing


Associated Press
Published on Dec 14, 2018

(14 Dec 2018) NASA is moving a massive liquid hydrogen tank to Huntsville, Alabama for testing as part of its plans to eventually return to the moon. (Dec 14)


https://www.youtube.com/watch?v=qAlwXvHsdSk?t=001

Tony De La Rosa

Offline ncb1397

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #912 on: 02/05/2019 03:14 am »
Space Daily is reporting that all 10 of the motor segments have been completed

Quote
Technicians at Northrop Grumman in Promontory, Utah, in coordination with SLS program leads at NASA's Marshall Space Flight Center in Huntsville, Alabama, finalized the fabrication of all 10 motor segments and fitted them with key flight instrumentation.
http://www.spacedaily.com/reports/NASA_Completes_Booster_Motor_Segments_for_First_Space_Launch_System_Flight_999.html

Marshall put up a time lapse on the hydrogen tank STA lift as well.



edit: NASA source: https://www.nasa.gov/exploration/systems/sls/booster-motor-segments-completed-for-first-flight
« Last Edit: 02/05/2019 03:34 am by ncb1397 »

Offline Verio Fryar

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #913 on: 02/06/2019 02:40 pm »
In his last article Eric Berger reports that the first launch will likely slip into 2021:
Multiple sources have told Ars that while NASA is still targeting sometime later in 2020 for a test launch of the SLS rocket and Orion spacecraft, known as Exploration Mission-1, this flight is likely to slip into 2021.
Full article at Ars Technica: https://arstechnica.com/science/2019/02/nasa-still-working-toward-2020-launch-of-massive-sls-rocket/

It seems that SLS is also in "Elon time" or worse ;)

Offline Robotbeat

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #914 on: 02/06/2019 03:18 pm »
The entire industry is like this.
Chris  Whoever loves correction loves knowledge, but he who hates reproof is stupid.

To the maximum extent practicable, the Federal Government shall plan missions to accommodate the space transportation services capabilities of United States commercial providers. US law http://goo.gl/YZYNt0

Offline whitelancer64

Re: SLS Development Stage UPDATE Thread (2)
« Reply #915 on: 02/06/2019 03:42 pm »
Yeah. Whenever someone says something like "we plan to launch in 2022," that really means, "IF we have full funding / customers' backing, IF nothing at all goes wrong in development and testing, THEN and ONLY THEN will we launch in 2022."

On-time / As-planned aerospace projects are rare. On-time and under budget is practially a unicorn.
"One bit of advice: it is important to view knowledge as sort of a semantic tree -- make sure you understand the fundamental principles, ie the trunk and big branches, before you get into the leaves/details or there is nothing for them to hang on to." - Elon Musk
"There are lies, damned lies, and launch schedules." - Larry J

Offline ncb1397

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #916 on: 02/11/2019 10:58 am »
Quote
Boeing teams working on America’s next great rocket, the Space Launch System (SLS), are now connecting the rocket segments for final assembly.

Boeing workers at NASA’s Michoud facility in New Orleans assembled the top half of the SLS core stage – the intertank, liquid oxygen tank and forward skirt - in a vertical stacking cell. The process is called a forward join.  The forward join will then be connected to the bottom half of the rocket – the liquid hydrogen tank and engine section – to complete the 212-foot core stage.
https://www.boeing.com/features/2019/02/sls-forward-join-02-19.page

Online jacqmans

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #917 on: 02/21/2019 08:37 am »
February 20, 2019

NASA Invites Media for Look at NASA’s Space Launch System Progress


Media are invited view core stage hardware and see an engine firing test for NASA’s Space Launch System, America’s new deep space rocket, at NASA’s facilities in Louisiana and Mississippi on Thursday, Feb. 28.

NASA recently completed the forward join, marking the beginning of integration and assembly of the massive, 212-foot-tall SLS core stage, which includes the rocket’s four RS-25 rocket engines, propellant tanks and flight computers. The forward join effectively connects three major structures — the forward skirt, the liquid oxygen tank and the intertank — to form the top part of the rocket’s core stage.

The massive core stage serves as the backbone of the most powerful rocket in the world. It includes the liquid hydrogen tank and liquid oxygen tank that hold 733,000 gallons of propellant to power the stage’s four RS-25 engines that will send astronauts on deep space missions farther than humans have ever travelled before.
Media who would like to attend the event should contact Tracy McMahan at 256-682-5326 no later than 5 p.m. CST, Monday, Feb. 25.

This event includes factory tours. Media attendees must wear long pants and flat, closed-toe shoes with no heels. Photo identification is required and this tour is open only to U.S. citizens.

NASA and prime contractors manufacturing and testing SLS will provide expert-led facility tours and answer questions. The tours will begin at 7 a.m. CST at NASA’s Michoud Assembly Facility in New Orleans, followed by an afternoon visit to the agency’s Stennis Space Center in Stennis, Mississippi, to tour facilities, watch an engine test, and interview experts. Bus transportation will be provided between facilities.
Media will have the opportunity to:

•   Witness an engine test firing of an RS-25 engine built with 3D printed parts to increase engine affordability on future SLS missions, and interview propulsion system experts

•   View and photograph the recently completely forward join, or upper part, of the SLS core stage for Exploration Mission-1, the first integrated flight of SLS and the Orion spacecraft

•   Learn about the initial work underway for Exploration Mission-2 (EM-2), the second flight for SLS, including the core stage hardware and engines

•   Meet and interview young professionals and other experts who are working on America’s first deep space rocket

For more on NASA’s SLS, visit:
https://www.nasa.gov/sls

Offline Steven Pietrobon

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #918 on: 02/22/2019 05:57 am »
•   Meet and interview young professionals and other experts who are working on America’s first deep space rocket

How soon they forget. The US's first deep space rocket was Thor Able I in 1958.

https://space.skyrocket.de/doc_lau_det/thor-dm18_able-1.htm
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Mark S

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Re: SLS Development Stage UPDATE Thread (2)
« Reply #919 on: 02/23/2019 04:07 pm »
Will they continue to blur that section of the intertank during the green run? When EM-1 is on the pad? During any/all future launches?

I don't recall the Shuttle ET intertank ever being blurred. Maybe I just never saw pics of ET during construction.

Just seems weird.

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