SLS - space launch system (3-я попытка)

Автор Salo, 16.02.2012 10:25:55

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tnt22

Цитировать Jim Bridenstine @JimBridenstine 3 ч. назад

The team has successfully lowered the @NASA_SLS core stage in the B-2 Test Stand @NASAStennis and is beginning final installation and hard mate, which will consist of 4-6 hours of detailed alignment. Should be done this evening!


tnt22

Цитировать D. Stamos/Helodriver‏ @SpacecoastPix 6 мин. назад

For an excellent background refresher on the massive "B" rocket test stand at @NASAStennis being used for the #SLS Green Run, read this @NASASpaceflight article on the refurbishment and preparation the Apollo era site was put through for its new role.

https://www.nasaspaceflight.com/2019/01/nasa-stennis-b-2-stand-activation-sls-green-run/ ...


tnt22

#2402
https://www.nasa.gov/feature/nasa-artemis-program-and-stennis-space-center-set-the-stage-for-testing-in-2020
ЦитироватьJan. 23, 2020

NASA Artemis Program and Stennis Space Center Set the Stage for Testing in 2020


Credits: NASA/SSC

All eyes are on south Mississippi with this month's delivery and installation of NASA's Space Launch System (SLS) rocket's first core stage to Stennis Space Center for a milestone Green Run test series prior to its Artemis I flight.


Credits: NASA/SSC

The Green Run testing will be the first top-to-bottom integrated testing of the stage's systems prior to its maiden flight. The testing will be conducted on the B-2 Test Stand at Stennis, located near Bay St. Louis, Mississippi, and the nation's largest rocket propulsion test site. Green Run testing will take place over several months and culminates with an eight-minute, full-duration hot fire of the stage's four RS-25 engines to generate 2 million pounds of thrust, as during an actual launch.

"This critical test series will demonstrate the rocket's core stage propulsion system is ready for launch on missions to deep space," Stennis Director Rick Gilbrech said. "The countdown to this nation's next great era of space exploration is moving ahead."

NASA is building SLS as the world's most-powerful rocket to return humans to deep space, to such destinations as the Moon and Mars. Through the Artemis program, NASA will send the first woman and next man to the Moon by 2024. Artemis I will be a test flight without crew of the rocket and its Orion spacecraft. Artemis II will carry astronauts into lunar orbit. Artemis III will send astronauts to the surface of the Moon.

The SLS core stage, the largest rocket stage ever built by NASA, stands 212 feet tall and measures 27.6 feet in diameter. It is equipped with state-of-the-art avionics, miles of cables, propulsion systems and propellant tanks that hold a total of 733,000 gallons of liquid oxygen and liquid hydrogen to fuel the four RS-25 engines during launch. The core stage was designed by NASA and Boeing in Huntsville, Alabama, then manufactured at NASA's Michoud Assembly Facility in New Orleans by lead contractor Boeing, with input and contributions from more than 1,100 large and small businesses in 44 states.

"Delivering the Space Launch System rocket core stage to Stennis for testing is an epic historical milestone," said Julie Bassler, the SLS stages manager. "My team looks forward to bringing this flight hardware to life and conducting this vital test that will demonstrate the ability to provide 2 million pounds of thrust to send the Artemis I mission to space."

The stage was transported from Michoud to Stennis aboard the specially outfitted Pegasus barge. It arrived at the B-2 dock on Jan. 12 and was rolled out onto the test stand tarmac that night. Crews then began installing ground equipment needed for lifting the stage into a vertical position and onto the stand.


Credits: NASA/SSC

The lift was performed Jan. 21-22, which provided optimal weather and wind conditions. Crews now will fully secure the stage in place and to stand systems for testing.


Credits: NASA/SSC

NASA completed extensive modifications to prepare the B-2 stand for the test series. The stand has a notable history, having been used to test Saturn V stages that helped launch astronauts to the Moon as part of the Apollo Program and the three-engine propulsion system of the space shuttle prior to its first flight.

Preparing the stand for SLS core stage testing required upgrades of every major system on the stand, as well as the high pressure system that provides hundreds of thousands of gallons of water needed during a test. It also involved adding 1 million pounds of fabricated steel to the Main Propulsion Test Article framework that will hold the mounted core stage and extending the large derrick crane atop the stand that will be used to lift the SLS stage into place.

Once installed on the stand, operators will begin testing each of the stage's sophisticated systems. Among other things, they will power up avionics; conduct main propulsion system and engine leak checks; and check out the hydraulics system and the thrust vector control unit that allows for rotating the engines to direct thrust and "steer" the rocket's trajectory.


Credits: NASA/SSC

They also will conduct a simulated countdown, as well as a "wet dress rehearsal," in which propellants are loaded and flow throughout the stage system. The rehearsal exercise will end just prior to engine ignition, with the full four-engine hot fire to come in subsequent days.

After the hot fire test, crews plan to perform refurbishment work on the stage and inspect and configure it for shipment to Kennedy Space Center. The stage will be removed from the stand, lowered to its horizontal position on the tarmac and reloaded into Pegasus for the trip to Florida.


Credits: NASA/SSC

At Kennedy, the stage will be joined with other SLS elements and prepared for launch. The next time its four RS-25 engines fire, Artemis I will be taking flight.

Last Updated: Jan. 23, 2020
Editor: LaToya Dean


Георгий

https://arstechnica.com/science/2020/01/house-bill-seeks-to-gut-nasas-artemis-plan-resurrect-journey-to-mars/

в Палату представителей внесли Boeing Bill - передать все по полету к Луне от Наса Боингу, с прямым запретом на любую конкуренцию:
    [/li]
  • The United States should retain "full ownership" of the Human Landing System, and unfettered insight into its design and development. In other words, it must be let under a cost-plus contract
  • The lunar plans should utilize "the Orion vehicle and an integrated lunar landing system carried on an Exploration Upper Stage-enhanced Space Launch System for the human lunar landing missions.
  • The Gateway to Mars shall not be required for the conduct of human lunar landing missions.

tnt22

Цитировать Chris B - NSF@NASASpaceflight 10:28 PM - Feb 3, 2020

ARTICLE:

Upper Stage RL10s arrive at Stennis for upcoming SLS launches -

https://www.nasaspaceflight.com/2020/02/upper-stage-rl-10s-stennis-sls-launches/ ...

Цитировать
Upper Stage RL10s arrive at Stennis for upcoming SLS launches - NASASpaceFlight.com
The Stennis Space Center is currently the focal point of the milestones toward the debut...
nasaspaceflight.com

tnt22

Цитировать NASA_SLS✔@NASA_SLS 10:30 PM - Feb 3, 2020

Shaking things up @NASAStennis test teams completed modal testing, the initial test of the #NASASLS core stage Green Run series, last week. The test mimics the stresses the stage will endure during launch and verifies flight control parameters. MORE >> http://go.nasa.gov/2Y70nj9


Чебурашка

#2407
Джими смотрит в анус отверстие на днище хвостового отсека ракеты - место, где благодаря политиканам, оказалась американская пилотируемая космонавтика  :D


azvoz

ЦитироватьЧебурашка написал:
Джими смотрит в  анус  отверстие на днище хвостового отсека ракеты - место, где благодаря политиканам, оказалась американская пилотируемая космонавтика  

 
Не отвергая ваш тезис  -  кого из политиканов вы за это вините?
Можно не имена а группы и интересы.

Чебурашка

#2409
ЦитироватьНе отвергая ваш тезис  -  кого из политиканов вы за это вините?

Тех кто после катастрофы "Колумбии" начал Constellation, но не выделил на это необходимые ресурсы.
Тех кто в рамках Constellation вместо того, чтобы посадить корабль на существующую ракету, начал разрабатывать новую "палку". Главное, чтобы во все заинтересованные штаты и корпорации текло бабло как раньше.
Тех кто похерил  Constellation вместе с "палкой" на полпути, не предложив взамен абсолютно ничего.
Тех кто начал Commercial Crew,  но не выделил на это необходимые ресурсы.
Тех кто начала программу большой ракеты из трёх букв, не имея не малейшего понятия для чего она нужна.  Главное, чтобы во все заинтересованные штаты и корпорации текло бабло как раньше.
Тех кто хочет превратить Artemis во вторую Constellation и отдать все ресурсы старым знакомым. Главное, чтобы во все заинтересованные штаты и корпорации текло бабло как раньше

Вот из-за этого, с 2003 года, с катастрофы "Колумбии" пилотируемый корабль так и не доведён до ума.
17 лет в анус при потраченных огромных деньгах.
ТРИ пилотируемых корабля, разрабатываемых параллельно. Ни один до сих пор не летает с людьми.

Это надо уметь.

azvoz

#2410
ЦитироватьЧебурашка написал:
Тех кто похерил  Constellation вместе с "палкой" на полпути, не предложив взамен абсолютно ничего.
Обамка проказник

Raul

ЦитироватьЧебурашка написал:
Это надо уметь.
Скоро они догадаются, что во всем виноват Кремль. :D 
Земля не может, не может не вращаться,
А мур не может, не может не мурчать!

Rudel

ЦитироватьЧебурашка написал:
Главное, чтобы во все заинтересованные штаты и корпорации текло бабло как раньше.
Так ли это плохо?
Ясно же, что никакой прибыли и вообще полезной отдачи ни от супертяжа, ни от ПК не будет никогда.
Так что единственная цель, ради которой их создают - это утилизация населения в условиях его чудовищного перепроизводства.
Иначе говоря - слишком много нас на Земле, большей части заняться откровенно нечем.

Seerndv

Свободу слова Старому !!!
Но намордник не снимать и поводок укоротить!
Все могло быть еще  хуже (С)

Not

ЦитироватьWe just don't have people with the skills that can make them same way anymore

tnt22

#2415
Цитировать Michael Baylor‏ @nextspaceflight 7 мин. назад

"Based on our review of SLS Program cost reporting, we found that the Program exceeded its Agency Baseline Commitment (ABC)—that is, the cost and schedule baselines committed to Congress against which a program is measured—by at least 33 percent at the end of fiscal year 2019..."
Цитировать NASA OIG‏ @NASAOIG 11 мин. назад

OIG assessed NASA's management of SLS core stage, upper stage, RS-25 engines, and solid rocket booster contracts. See:

https://oig.nasa.gov/docs/IG-20-012.pdf ...
and
https://oig.nasa.gov/videos.html?id=5132 ...

9 мин. назад

"...a figure that could reach 43 percent or higher if additional delays push the launch date for Artemis I beyond November 2020."

tnt22

IG-20-012.pdf - 4.7 MB, 57 стр, 2020-03-10 13:48:34 UTC


tnt22


tnt22