SLS - space launch system (3-я попытка)

[tnt22]

GSDO Program‏ @NASA_go4launch 48 мин назад

#WisdomWednesday With the @NASA_SLS rocket's thrust reaching over 8M lbs, #GSDO is installing a new flame deflector! #EM1 #WeAreGo

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[tnt22]

Chris B - NSF‏ @NASASpaceflight 13 мин. назад

And there's the ICPS taking a KSC tour en route to the SSPF.

View this post on Instagram

11 мин. назад

And another pic: https://www.instagram.com/p/BXBJwvkA9oY/ 

[tnt22]

ULA‏Подлинная учетная запись @ulalaunch 41 мин. назад

Yesterday the Interim Cryogenic Propulsion Stage for @NASA_SLS's EM-1 mission moved to the Space Shuttle Processing Facility! @BoeingDefense

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ULA‏Подлинная учетная запись @ulalaunch 40 мин. назад

During the EM-1 mission, ICPS will provide in-space propulsion sending @NASA_Orion and the service module on their way to the moon.

[tnt22]

https://blogs.nasa.gov/kennedy/2017/07/27/interim-cryogenic-propulsion-stage-moves-to-space-station-processing-facility/

Interim Cryogenic Propulsion Stage Moves to Space Station Processing Facility
Posted on July 27, 2017 at 1:56 pm by Linda Herridge.


The Interim Cryogenic Propulsion Stage, packed in its canister, exits the Delta Operations Center at Cape Canaveral Air Force Station for transport to the Space Station Processing Facility at Kennedy Space Center. Photo credit: NASA/Kim Shiflett

The Interim Cryogenic Propulsion Stage (ICPS) is the first segment for NASA's Space Launch System (SLS) rocket to arrive at the agency's Kennedy Space Center in Florida. It was transported fr om the United Launch Alliance (ULA) facility at Cape Canaveral Air Force Station, wh ere it had been undergoing final testing and checkout since arriving in February, to the Space Station Processing Facility at the center.

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Stacking of the rocket will occur in the Vehicle Assembly Building (VAB). The ICPS will be located at the very top of the SLS, just below the Orion capsule. During Exploration Mission-1, NASA's first test mission of the SLS rocket and Orion, the ICPS, filled with liquid oxygen and liquid hydrogen, will give Orion the big in-space push needed to fly beyond the Moon before returning to Earth.

The ICPS was designed and built by ULA in Decatur, Alabama, and Boeing in Huntsville, Alabama. The propulsion stage will be cleaned and maintained and remain in the high bay at the Space Station Processing Facility and moved to the VAB when it is time for stacking operations.

This entry was posted in Journey to Mars, Kennedy, Space Launch System on July 27, 2017 by Linda Herridge.

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[tnt22]

https://www.nasa.gov/exploration/systems/sls/multimedia/sls-meets-milestones-building-processing-multiple-tanks.html

July 27, 2017

SLS Meets Milestones Building, Processing Multiple Tanks

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NASA has met a milestone completing the welding on a liquid oxygen tank test article and beginning welding the liquid oxygen tank that will be part of the first Space Launch System deep space rocket. This tank and the liquid hydrogen tank are the parts of the SLS core stage that hold more than 700,000 gallons of propellant to power the rocket's four RS-25 engines. Inside the Vertical Assembly Building at NASA's Michoud Assembly Facility in New Orleans, four fuel tanks are being built and processed simultaneously. Engineers are building core stage tanks that will fly on the first SLS flight and tanks that will provide valuable test data. In the world's largest robotic rocket welder, the Vertical Assembly Center (left back), the prime contractor for the SLS core stage, Boeing, is welding a flight tank for the first SLS flight with Orion. Engineers just built an almost identical tank, the liquid oxygen tank qualification test article (right front). On the same side of the building, technicians are washing the interior of the liquid hydrogen structural qualification test article (right back). When completed, these core stage test articles travel by barge to NASA's Marshall Space Flight Center in Huntsville, Alabama, for structural testing that will demonstrate that the tanks structures can withstand the harsh environments of flight and perform as designed. In the middle of the floor in the above image, engineers are practicing operations with a liquid hydrogen tank built for flight. The left front of the building is currently empty, but it serves as a vertical stacking area where tanks and other core stage hardware can be stacked, assembled and inspected.

Image credit: NASA/Michoud/Jude Guidry

Last Updated: July 27, 2017
Editor: Lee Mohon

[tnt22]

John Casani‏ @CasaniJohn 27 июл.

@ulalaunch transport convoy with ICPS en route to the Space Shuttle Processing Facility @NASA_SLS @BoeingDefense

[tnt22]

Chris B - NSF‏ @NASASpaceflight 5 мин. назад

FEATURE ARTICLE: Preparing the Mobile Launcher to be armed and ready for SLS - https://www.nasaspaceflight.com/2017/07/mobile-launcher-armed-ready-sls/ ... (Very cool article by Philip Sloss)

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Preparing the Mobile Launcher to be armed and ready for SLS

[silentpom]

кажется что у них переходник между ступенями больше чем сама вторая ступень

[tnt22]

Chris B - NSF‏ @NASASpaceflight 3 мин. назад

As previously noted, but now official... Farewell Swooshes for the SLS SRBs. However, say hello to the checkerboard!



8 сек. назад

Swooshes were just fancy PR. Checkerboard is engineering. Enables photogrammetrists to measure critical distances during Ascent/SRB Sep.

[tnt22]

https://www.nasa.gov/exploration/systems/sls/space-launch-system-solid-rocket-boosters-on-target-for-first-flight.html

Aug. 2, 2017

Space Launch System Solid Rocket Boosters 'on Target' for First Flight

Production of the five-segment powerhouse motors for the Space Launch System (SLS) solid rocket boosters is on target at prime contractor Orbital ATK's facilities in Utah, with 10 motor segments cast with propellant and four of those segments complete. Following propellant casting, the finished segments were evaluated using non-destructive techniques, such as x-ray, to ensure they met quality standards, and the exterior cases were painted white with black-and-white photogrammetric markings. All motor segments will ultimately be shipped to Kennedy Space Center, where they will be integrated with forward and aft booster structures and then with the SLS core stage.

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Booster production is on target at prime contractor Orbital ATK's facilities, where technicians are applying photogrammetric markings on completed segments for the five-segment solid rocket booster motors for the first integrated mission of SLS and Orion.
Credits: OrbitalATK

The markings on the outside of the complete boosters look like black-and-white checkerboards and serve as "targets" for cameras located in strategic locations on and around the vehicle and will be used for photogrammetry, the science of using photography to help measure distances between objects.

In addition to the boosters, black-and-white photogrammetric targets will also appear on the SLS core stage, the interim cryogenic propulsion stage and the Orion stage adapter. On Orion, NASA's deep-space exploration spacecraft, photogrammetric markings will appear on the spacecraft adapter. The mobile launcher will also have photogrammetric markings. In addition, certain elements of the integrated stack, like the launch vehicle stage adapter, have photogrammetric markings on the interior rather than the exterior.


Black-and-white checkerboard targets on the exterior of the Space Launch System heavy-lift rocket will enable photogrammetrists to measure critical distances during spaceflight, including booster separation fr om the core stage.
Credits: NASA/MSFC

Cameras will be located on Orion, on the rocket's core stage, on the interior of the launch vehicle stage adapter, on the ground and on the mobile launcher. The cameras will be able to more easily track the vehicle's position in space by fixing on the black-and-white checkerboard targets. NASA's photogrammetry analysts will then use software to process the images fr om the cameras to measure distances, such as between the boosters and the core stage after those elements separate. Engineers are also interested in measuring the booster nozzles' clearance from the mobile launcher and the entire vehicle's clearance from the mobile launch tower shortly after liftoff.

One area engineers are particularly interested in is how the SLS solid rocket boosters, the largest ever manufactured for flight, will separate from the core stage. "Booster separation is influenced by several factors — their length, the configuration of the separation motors and the timing of separation," explained Alex Priskos, SLS systems engineering & integration manager. "The longer separation is delayed, the greater the clearance will be. However, waiting longer adversely impacts performance. Our job is to balance these factors."

Engineers designed SLS using state-of-the-art 3D software models and analysis, explained Beth St. Peter, SLS imagery integration lead. "As accurate as those models are, photogrammetry will provide real-life 'truth data' on separation events and other key points. And for the first flight of SLS, gathering this real-world data on how the vehicle performs compared to the models is crucial."

Although NASA has used photogrammetry since the days of the Saturn moon rockets and the space shuttle, use of the technology has come a long way, St. Peter said, primarily due to advances in being able to place digital imagery systems on launch vehicles.

SLS and Orion will incorporate different types of checkerboard patterns, or photogrammetric targets, which will be used for different types of measurements, noted David Melendrez, Orion's lead for imagery integration at Johnson Space Center. "The big squares will be used to measure general vehicle motion and ground clearances. Smaller checkerboards and elongated markings will be used to measure more complicated three-dimensional motions of the boosters relative to the core stage during their separation, about two minutes into the spaceflight."

On some parts of the rocket, smaller circular markings will help the cameras and photogrammetric software measure separation events, like Orion's separation from the interim cryogenic propulsion stage. "Some of these smaller markings will also have retro-reflective centers to help improve our ability to see them under the dark conditions we're likely to encounter on-orbit," Melendrez said.

In the final design, the photogrammetric checkerboards will replace the orange and gray stripes that had been previously considered. "Designing and building these deep space exploration systems is an evolutionary process," Priskos said. "In the beginning, you define a mission and a basic architecture to take you wh ere you want to go. The details might be a little fuzzy at first, but gradually, like a camera zooming in closer and closer, those details are revealed. This is wh ere we are with SLS and Orion."

On launch day — and during the duration of the first mission — it won't just be the engineers on the ground who see the imagery from the cameras located at various spots on the vehicle and ground. "Some cameras will record imagery onboard SLS and Orion and transmit later. But there will also be some live downlinked imagery from these cameras on launch day," Melendrez said. "People watching at home will be able to see some of this imagery live on NASA TV."

With the application of black-and-white photogrammetric targets on the solid rocket boosters, NASA's new capability for exploring deep space is becoming clearer — and closer — all the time.
 
Kim Henry
Marshall Space Flight Center, Huntsville, Ala.
256-544-0034
kimberly.m.henry@nasa.gov

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Last Updated: Aug. 3, 2017
Editor: Lee Mohon

[tnt22]

tnt22 пишет:
However, say hello to the checkerboard!

Susanne Auer‏ @AuerSusan 5 ч. назад

== BREAKING == In an major shakeup of the #SLS programme #NASA decides booster speed swooshes are out, checkerboard distance markers are in!

[tnt22]

Chris B - NSF‏ @NASASpaceflight 24 мин. назад

Should schedules hold, we're going to have a "thrust off" between the RS-25 and Merlin 1D on Tuesday. Both involved in Static Fire tests!

[tnt22]

Chris B - NSF‏ @NASASpaceflight 26 мин. назад

ARTICLE: Pad 39B in the final stages in preparation to welcome SLS Mobile Launcher - https://www.nasaspaceflight.com/2017/08/pad-39b-final-stages-preparation-sls-mobile-launcher/ ... - By Philip Sloss

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Pad 39B in the final stages in preparation to welcome SLS Mobile Launcher

[tnt22]

https://blogs.nasa.gov/kennedy/2017/08/04/service-platforms-arrive-for-space-launch-system-booster-engines/
или
https://blogs.nasa.gov/groundsystems/2017/08/04/service-platforms-arrive-for-space-launch-system-booster-engines/

Service Platforms Arrive for Space Launch System Booster Engines
Posted on August 4, 2017 at 11:05 am by Linda Herridge.


A flatbed truck carrying one of two new service platforms for NASA's Space Launch System booster engines arrives at the Vehicle Assembly Building at the agency's Kennedy Space Center in Florida on July 31, 2017. Photo credit: NASA/Bill White

New service platforms for NASA's Space Launch System (SLS) booster engines arrived at the agency's Kennedy Space Center in Florida. The platforms were transported on two flatbed trucks from fabricator Met-Con Inc. in Cocoa, Florida. They were offloaded and stored inside the Vehicle Assembly Building (VAB).

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The platforms will be used for processing and checkout of the engines for the SLS' twin five-segment solid rocket boosters for Exploration Mission-1 (EM-1). The boosters, in combination with the rocket's four RS-25 engines, will produce more than 8 million pounds of thrust at liftoff.

The first SLS mission, EM-1, will launch an uncrewed Orion spacecraft to a stable orbit beyond the Moon and bring it back to Earth for a splashdown in the Pacific Ocean. The mission will demonstrate the integrated system performance of the rocket, Orion spacecraft and ground support teams prior to a crewed flight.

This entry was posted in Journey to Mars, Kennedy, Space Launch System on August 4, 2017 by Linda Herridge.

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[tnt22]

Chris B - NSF‏ @NASASpaceflight 6 ч. назад

SpaceX Falcon 9 (CRS-12) Static Fire now NET Wednesday. Rap Battle https://twitter.com/NASASpaceflight/status/893218254591840256 ... - called off.

--> #1372 - соревнование отменяется

[tnt22]

Однако, в околокосмическом мире меняется всё довольно быстро  :oops:      

Chris B - NSF‏ @NASASpaceflight 2 ч. назад

The RS-25 versus Merlin 1D "Thrust Off" is back ON. RS-25 test now Wednesday, same as the Falcon 9 (CRS-12) Static Fire. #NoOneBackingDown

[tnt22]

Jeff Foust‏ @jeff_foust 1 ч. назад

NASA's Kimberly Robinson: SLS Block 1B cargo version ready to launch Europa Clipper in 2023 [thought they were targeting 2022...] #smallsat


1 ч. назад

Robinson: SLS Block 1B will have a revised secondary payload adapter, can accommodate 6U, 12U, 27U and perhaps other satellites. #smallsat


1 ч. назад

Robinson: right now, no allocation for secondary payloads on SLS launches of Europa Clipper/lander missions. #smallsat

[tnt22]

Stennis Space Center‏Подлинная учетная запись @NASAStennis 17 ч назад

Tune in tomorrow on Facebook live for an RS-25 engine test targeted for 3 p.m.! @NASAStennis #SLSFiredUp

[tnt22]

Chris B - NSF‏ @NASASpaceflight 3 мин. назад

Remember, static fire test fans, we are still expecting the SLS RS-25 (E0528 ) test at Stennis today - Article shortly.

[tnt22]

Chris B - NSF‏ @NASASpaceflight 3 мин. назад

ARTICLE: RS-25 to fire up again in another controller test for SLS - https://www.nasaspaceflight.com/2017/08/rs-25-another-controller-test-sls/ ... - by Philip Sloss

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RS-25 to fire up again in another controller test for SLS