SLS - space launch system (3-я попытка)

[tnt22]

Запись НАСА

Final RS-25 Engine Test of the Summer


NASA

Опубликовано: 30 авг. 2017 г.

On Aug. 30, engineers at our Stennis Space Center wrapped up a summer of hot fire testing for flight controllers on RS-25 engines that will help power the new Space Launch System rocket being built to carry astronauts to deep-space destinations, including Mars. The 500-second hot fire of a flight controller or "brain" of the engine marked another step toward the nation's return to human deep-space exploration missions. Four RS-25 engines, equipped with flight-worthy controllers will help power the first integrated flight of our Space Launch System rocket with our Orion spacecraft, known as Exploration Mission One.

(8:34)

[tnt22]

Stennis Space Center Shakes, Rattles and Roars

NASA Stennis

Опубликовано: 30 авг. 2017 г.

This test is a Green Run Test of the Controller and includes an ECS Cert with a planned duration of 500 seconds at a maximum power level of 109%

(8:51)

[tnt22]

NASA_SLS‏Подлинная учетная запись @NASA_SLS 3 ч назад

This panorama photo shows the assembled #NASASLS core stage pathfinder -- the same size as the core stage flight hardware

[tnt22]

Dynetics‏ @Dynetics 3 ч. назад

Today we mark the completion of the Core Stage Pathfinder for @NASA_SLS!

[tnt22]

https://www.nasa.gov/exploration/systems/sls/multimedia/sls-core-stage-pathfinder-paves-the-way-for-mission-success.html

Aug. 30, 2017

SLS Core Stage Pathfinder Paves The Way for Mission Success



NASA's Space Launch System core stage pathfinder is a full-scale simulator similar in size, shape and weight to the massive SLS core stage. The steel mockup will help handlers validate ground support equipment and practice transporting the 212-foot-long core stage on a variety of terrains with different vehicles. Practicing with pathfinder will reduce risk when people lift and transport one-of-a-kind flight hardware. Alabama companies that contributed to pathfinder include Radiance Technologies and Dynetics, Inc. in Huntsville and G&G Steel in Cordova where final welding and major assembly operations where completed. Pathfinder will travel 400 miles by commercial barge fr om Cordova to NASA's rocket factory in New Orleans: the Michoud Assembly Facility where the core stage is being built. Later, NASA's barge Pegasus will take pathfinder to Stennis Space Center near Bay St. Louis, Mississippi, wh ere it will be lifted into the B-2 test stand to practice operations before the green run hot-fire test. Finally, pathfinder will pave the way for core stage activities at NASA's Kennedy Space Center in Florida.

Image credit: NASA/MSFC/Kevin Obrien
 
Last Updated: Aug. 30, 2017
Editor: Lee Mohon

[tnt22]

https://www.nasa.gov/exploration/systems/sls/multimedia/nasas-space-launch-system-launch-vehicle-stage-adapter-ready-for-thermal-insulation.html

Aug. 31, 2017
NASA's Space Launch System Launch Vehicle Stage Adapter Ready for Thermal Insulation Application


 
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The largest piece of hardware for NASA's Space Launch System built at NASA's Marshall Space Flight Center in Huntsville, Alabama, is ready for thermal insulation. Manufacturing is complete on the launch vehicle stage adapter, and it has been moved to NASA's Center for Advanced Manufacturing for the application of the spray-on foam insulation that will surround it during its ride to space. Not only is the LVSA the largest segment of the rocket built at Marshall, measuring 27.6 feet in diameter and 30 feet tall, it is also the largest piece of flight hardware to have insulation applied at Marshall by hand. The LVSA connects two major sections of the upper part of SLS -- the core stage and the interim cryogenic propulsion stage -- for the first flight of the rocket and NASA's Orion spacecraft. Insulation is applied to segments of rocket hardware to protect them from aerodynamic heating. When the insulation is applied, the coating will appear yellow, but as the insulation is exposed to the sun, it will turn orange. Teledyne Brown Engineering of Huntsville, is the prime contractor for the adapter.

Image credit: NASA/MSFC/Tyler Martin

Last Updated: Aug. 31, 2017
Editor: Lee Mohon

[tnt22]

https://www.nasa.gov/exploration/systems/sls/multimedia/sls-core-stage-simulator-will-pave-way-for-mission-success.html

Sept. 1, 2017

SLS Core Stage Simulator Will Pave Way for Mission Success



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To reduce the risk of first-time operations with one-of-a-kind spaceflight hardware for NASA's Space Launch System (SLS), the agency built a core stage pathfinder similar in size, shape and weight to the 212-foot-tall core stage. Like SLS, the core stage pathfinder will be doing something that's never been done -- testing new shipping and handling equipment and procedures from the manufacturing site to the test site to the launch site. Three companies helped build the pathfinder, joining more than 1,000 other American businesses that have contributed to building NASA's deep-space rocket. Alabama companies Radiance Technologies and Dynetics of Huntsville and G&G Steel of Russellville worked to build and assemble the core stage pathfinder. The steel simulator will travel by commercial barge from G&G Steel's Cordova factory to NASA's rocket factory, the Michoud Assembly Facility in New Orleans. Later, it will make its way on NASA's barge Pegasus to the agency's Stennis Space Center near Bay St. Louis in Mississippi, and then to Kennedy Space Center in Florida. In all these NASA facilities, the core stage pathfinder will help technicians practice critical operations for handling and transporting flight hardware and enable them to fit check the hardware before the actual core stage arrives at their facilities.

Image credit: NASA/MSFC

Last Updated: Sept. 1, 2017
Editor: Lee Mohon

[tnt22]

(0:57 ÷ 1:34) - RS-25 Engine Test,
(1:35 ÷ 1:57) - Key SLS Rocket Hardware

Catastrophic Storm Seen from Space on This Week @NASA – September 1, 2017

NASA

Опубликовано: 1 сент. 2017 г.

We worked with our partner agencies to use space-based assets to capture imagery of Hurricane Harvey that impacted the Texas-Louisiana Gulf Coast region. Imagery captured from the vantage point of space, provides data that weather forecasters, emergency responders and other officials can use to better inform the public. Views from the International Space Station, and NOAA's GOES East satellite showed the massive size and movement of the storm. While our Global Precipitation Measurement (GPM) Mission analyzed the storm's record-breaking rainfall – which led to catastrophic flooding in Texas and Louisiana. Due to the storm, our Johnson Space Center in Houston is closed through Labor Day, while the region recovers, but Mission Control remains operational in support of the crew aboard the International Space Station. Also, Final RS-25 Engine Test of the Summer, Key SLS Rocket Hardware Finished, and Researching Quiet Supersonic Flight!

(2:24)

[tnt22]

Chris B - NSF‏ @NASASpaceflight 52 мин. назад

ARTICLE: SLS Core Stage Pathfinder prepares for barge ride to MAF - https://www.nasaspaceflight.com/2017/09/sls-core-stage-pathfinder-barge-maf/ ... - by Philip Sloss

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SLS Core Stage Pathfinder prepares for barge ride to MAF

[tnt22]

Orbital ATK‏Подлинная учетная запись @OrbitalATK 5 сент.

.@NASA_SLS Booster Update: Five of 10 segments are now in storage & awaiting shipment to @NASAKennedy where they will be prepped for launch

[tnt22]

Orbital ATK‏Подлинная учетная запись @OrbitalATK 7 ч. назад

We've completed booster avionics qualification for @NASA_SLS – another critical milestone toward first flight! http://bit.ly/2j1UiAC 

http://www.orbitalatk.com/news-room/release.asp?prid=285

Orbital ATK Completes Qualification of Solid Rocket Booster Avionics for NASA's Space Launch System

Company's Five-Segment Boosters will Help Provide Initial Thrust for First Two Minutes of Flight for SLS

Full Booster Certification Set to Complete Later this Year

Dulles, Virginia 6 September 2017 – Orbital ATK (NYSE: OA), a global leader in aerospace and defense technologies, recently completed an important qualification test of the avionics system for the solid rocket boosters the company has developed and is now manufacturing for NASA's Space Launch System (SLS). Completion of this milestone is an important step toward preparing the SLS and Orion spacecraft for their first flight in 2019. Two Orbital ATK-developed five-segment rocket boosters will be used on each SLS launch to help provide initial thrust for the first two minutes of flight.

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The avionics system is considered the "brains of the booster" as it starts booster ignition, communicates with the SLS launch vehicle computers during flight, and initiates booster separation upon completion of the first stage burn. The system is now qualified as meeting NASA's demanding human-rating requirements, which provide a level of redundancy to ensure a safe flight environment through various phases of lift-off, ascent and staging.

"Completion of booster avionics system qualification is a significant step forward in supporting overall vehicle qualification and launch of the first flight of SLS – Exploration Mission-1," said Jeff Foote, Vice President of NASA Programs for Orbital ATK's Propulsion Systems Division. "We are proud of this accomplishment and look forward to completing full certification of the booster later this year."

Qualification of the booster avionics system included a rigorous and comprehensive test series that thoroughly verified the fidelity of the system in a variety of expected and abnormal conditions. Key interactions confirmed during qualification testing included the ability to initiate booster ignition, control the booster during flight, and terminate flight.

The Space Launch System is NASA's new heavy-lift launch vehicle that is being built to take crew and cargo to destinations beyond earth orbit, including to cislunar space and eventually Mars. SLS, along with the Orion spacecraft, will enable human exploration on a variety of missions to deep space. It has the greatest capacity of any launch system ever built, ensuring continued American leadership in space exploration.

Orbital ATK manufactures the twin, five-segment solid rocket boosters in Promontory, Utah, about an hour and a half north of Salt Lake City. Contributing to SLS booster production are 29 key suppliers across 17 states including Alabama, Arizona, California, Connecticut, Florida, Indiana, Kentucky, Massachusetts, Minnesota, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Texas, Utah and Wisconsin.

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[tnt22]

http://www.orbitalatk.com/news-room/insideOA/SLS_Booster_Update/default.aspx?prid=283

Boosters on Track for First Flight of NASA's Space Launch System

​When NASA's next-generation heavy-lift rocket, the Space Launch System (SLS) lifts off, it will feature familiar-looking twin solid rocket motor boosters similar in appearance to the white four-segment boosters that helped propel the Space Shuttle into orbit.

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This rendering depicts what NASA's Space Launch System will look like during launch.

Each SLS booster consists of five solid rocket motor segments along with forward and aft assemblies as well as other flight components. With only five segments left to finalize, Orbital ATK is on track to deliver the two solid rocket boosters for the first flight of NASA's Space Launch System (SLS). The booster segments are manufactured and tested in Promontory, Utah, and will undergo final processing and preparation for launch at NASA's Kennedy Space Center in Florida.

The motor segments are manufactured one by one, and each is meticulously tested before they are declared fit for launch. They are lined with insulation before they are filled with propellant in a procedure known as "casting." The fueled segments are then x-rayed to ensure the cast was successful. The segments are then sent to the final assembly area where engineers first trim the propellant. In the forward segment they install the igniter, and a nozzle is attached to the aft segment. Finally they touch up the exterior white coating, and final touches are added including black checker-board markings, which will provide visual reference points for engineers' post flight analysis.

An Orbital ATK technician paints photogrammetric markings on one of the booster segments to provide visual reference points for better tracking of the boosters during launch and separation.

With completion of each step, engineers perform numerous inspections to ensure consistency of manufacturing. Additionally, technicians take samples of the propellant during casting and test each mix to ensure quality standards are met.

Each booster motor incorporates several components that ensure the boosters' performance from ignition through separation. Each system is rigorously tested to ensure they function flawlessly during each mission:

This grapihc shows all major components in the SLS boosters (click to enlarge).

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• Igniter: ignites the boosters upon liftoff
• Avionics System: sends data to the flight control computer and command booster functions
• Thrust Vector Control System: steers the vehicle by moving the nozzle
• Booster Separation Motors: push the spent boosters away from the SLS core stage during separation
• Aft Skirt: supports the weight of the SLS rocket on the launch pad
• Range Safety Systems: terminate booster propulsion in the case of an anomaly
• Flight Instrumentation System: gathers data for flight performance evaluation
  

An SLS booster fires during the second qualification test (QM-2) at Orbital ATK's facility in Promontory, Utah.

To date, all ten booster segments for the first flight of NASA's SLS have been cast and are making their way through final processing. Five of the ten segments are fully complete and in storage, ready for shipment upon NASA's request. All segments are on track for completion no later than November of this year. In addition to the motor segments, Orbital ATK is currently manufacturing the Aft Skirt Assemblies and Forward Skirt Assemblies at Kennedy Space Center's Booster Fabrication Facility. These assemblies, containing the Thrust Vector Control system and Booster Avionics respectively, will be delivered to NASA in 2018 for mating with the motor segments to complete fabrication of the EM-1 boosters.

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[tnt22]

NASA_SLS‏Подлинная учетная запись @NASA_SLS 2 ч. назад

A major component for the #NASASLS core stage is finished with welding - the liquid oxygen tank. More: https://go.nasa.gov/2evLqlo

https://www.nasa.gov/exploration/systems/sls/multimedia/nasa-completes-welding-of-liquid-oxygen-tank-for-first-sls-flight.html

Sept. 1, 2017

NASA Completes Welding of Liquid Oxygen Tank for First SLS Flight



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NASA is another step closer to completing all main structures for the agency's first launch of the Space Launch System deep space rocket. The liquid oxygen flight tank was recently built in the Vertical Assembly Center robotic welder at NASA's Michoud Assembly Facility in New Orleans. After the liquid oxygen tank was inspected, it was moved to another area for plug welding to fill the holes left by the friction stir welding process. Five major parts -- the engine section, liquid hydrogen tank, intertank, liquid oxygen tank and forward skirt –will be connected together to form the 212-foot-tall core stage, the backbone of the SLS rocket. Boeing, the prime contractor for the core stage, is welding the liquid hydrogen tank structure--the final major core stage structure to be built for the first integrated flight of SLS and Orion. The liquid hydrogen and liquid oxygen tanks will hold 733,000 gallons of propellant to power the stage's four RS-25 engines that together produce more than 2 million pounds of thrust.

Image credit: NASA/MSFC/Michoud/Jude Guidry

Last Updated: Sept. 1, 2017
Editor: Lee Mohon

[tnt22]

SLS highlights for August:

sls_highlights_aug_2017_web.pdf - 2476765 B, 7 стр, 2017-09-11 14:48:55 UTC

[tnt22]

Chris B - NSF‏ @NASASpaceflight 2 ч. назад

Next article is on the LVSA. It's a cone, covered in foam, but without it, the upper stage and core stage simply would not be friends.



35 мин. назад

ARTICLE: Preparing the adaptor - LVSA readies for SLS debut - https://www.nasaspaceflight.com/2017/09/preparing-adaptor-lvsa-readies-sls-debut/ ... - by Philip Sloss

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Preparing the adaptor – LVSA readies for SLS debut

[silentpom]

простейшая деталь в кербале

[Чебурашка]

tnt22 пишет:
. It's a cone, covered in foam,

Зачем нужна пена на коническом переходнике, если он с баками совершенно не соприкасается?

P.S. Сам нашёл ответ в статье

the flight unit needs thermal protection from the atmospheric heating it will see during ascent

[silentpom]

меня удивило если честно. почему другие обтекатель не запенивают?

[tnt22]

Orbital ATK‏Подлинная учетная запись @OrbitalATK 21 ч. назад

Booster update: Both aft segments for @NASA_SLS boosters are now in final assembly at our facility in Utah. #OrbitalATKDelivers

[tnt22]

NASA_SLS‏Подлинная учетная запись @NASA_SLS 8 ч. назад

Workers at @NASA_Marshall are cleaning the #NASASLS LVSA by hand so thermal protection can be applied! >> https://go.nasa.gov/2xO46Aw