SLS - space launch system (3-я попытка)

Автор Salo, 16.02.2012 10:25:55

« назад - далее »

0 Пользователи и 1 гость просматривают эту тему.

tnt22

Цитировать360 View of SLS Core Stage Pathfinder Lift

 NASAKennedy

18 окт. 2019 г.

The Space Launch System's Core Stage Pathfinder is lifted from the Vehicle Assembly Building's transfer aisle and into High Bay 3 at NASA's Kennedy Space Center on Oct. 16, 2019. The Pathfinder, or practice hardware, is being used by Exploration Ground Systems and its contractor, Jacobs, to practice offloading, moving, and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly.
https://www.youtube.com/watch?v=lxGlxbSXrR0https://www.youtube.com/embed/lxGlxbSXrR0 (0:52)


Цитировать360 View of SLS Core Stage Pathfinder Lift: Camera 2

 NASAKennedy

18 окт. 2019 г.
https://www.youtube.com/watch?v=zS77Mi1wVP4https://www.youtube.com/embed/zS77Mi1wVP4 (1:13)

Чебурашка

Начали прикручивать второй двигатель RS-25
Что-то они медленно прикручивают.

Для шаттла процедура установки двигателя занимала всего 5 часов.

Старый

ЦитироватьЧебурашка написал:
Для шаттла процедура установки двигателя занимала всего 5 часов.
Первый раз небось тоже неделю прикручивали. 
1. Ангара - единственная в мире новая РН которая хуже старой (с) Старый Ламер
2. Назначение Роскосмоса - не летать в космос а выкачивать из бюджета деньги
3. У Маска ракета длиннее и толще чем у Роскосмоса
4. Чем мрачнее реальность тем ярче бред (с) Старый Ламер

KBOB

ЦитироватьЧебурашка написал:
Начали прикручивать второй двигатель RS-25
Что-то они медленно прикручивают.

Для шаттла процедура установки двигателя занимала всего 5 часов.
До Рождества что планируют?
Россия больше чем Плутон.

tnt22

https://www.nasa.gov/exploration/systems/sls/multimedia/first-of-4-rs25-engines-attached-to-artemis-rocket-stage.html
ЦитироватьOct. 22, 2019

NASA Attaches First of 4 RS-25 Engines to Artemis I Rocket Stage


 Back to Gallery

Engineers and technicians at NASA's Michoud Assembly Facility in New Orleans have structurally mated the first of four RS-25 engines to the core stage for NASA's Space Launch System (SLS) rocket that will help power the first Artemis mission to the Moon. Integration of the RS-25 engines to the recently completed core stage structure is a collaborative, multistep process for NASA and its partners Boeing, the core stage lead contractor, and Aerojet Rocketdyne, the RS-25 engines lead contractor. To complete the installation, the technicians will now integrate the propulsion and electrical systems.  The installation process will be repeated for each of the four RS-25 engines. The four RS-25 engines used for Artemis I were delivered to Michoud from Aerojet Rocketdyne's facility at NASA's Stennis Space Center near Bay St. Louis, Mississippi, in June. The engines, located at the bottom of the core stage in a square pattern, are fueled by liquid hydrogen and liquid oxygen. During launch and flight, the four engines will fire nonstop for 8.5 minutes, emitting hot gases from each nozzle 13 times faster than the speed of sound. The completed core stage with all four engines attached will be the largest rocket stage NASA has built since the Saturn V stages for the Apollo Program.

NASA is working to land the first woman and next man on the Moon by 2024. SLS is part of NASA's backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts and supplies to the Moon on a single mission.

Image Credit: NASA/Jude Guidry

Last Updated: Oct. 22, 2019
Editor: Jennifer Harbaugh

Чебурашка

#2125
ЦитироватьKBOB написал:
До Рождества что планируют?

10 декабря полностью укомплектованная ступень  должна покинуть завод в Мишуде и отправится на стенд в центре им. Маршалла.
Но уже чвуствуется, что отстают. Не успеют.

tnt22

Цитировать NASA Marshall‏ @NASA_Marshall 43 мин. назад

The first RS-25 engine has been attached to the @NASA_SLS rocket that will send #Artemis I on its way to the Moon!

Learn more about how SLS is coming together >> http://go.nasa.gov/2qBCWyF





tnt22

Цитировать NASA_SLS @NASA_SLS 5 ч. назад

#DidYouKnow each of the RS-25 engines for Artemis I has a special identification number? Engine 2056, the engine recently attached to the core stage, has flown on several shuttle missions including a servicing mission for NASA's Hubble Telescope. MORE >> http://go.nasa.gov/2MFg7m7



tnt22

https://www.nasa.gov/feature/egs-practices-heavy-lift-of-core-stage-pathfinder-for-artemis-missions
ЦитироватьOct. 23, 2019

EGS Practices Heavy Lift of Core Stage Pathfinder for Artemis Missions


In this view looking up inside the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, workers use a crane to lower the Space Launch System Core Stage pathfinder into High Bay 3 on Oct. 16, 2019.

By Linda Herridge
NASA's John F. Kennedy Space Center


What does it take to lift and stack NASA's Space Launch System (SLS) rocket, the largest rocket ever built for flight? Weighing in at nearly 225,000 pounds, the core stage of the SLS is one of the largest and heaviest pieces of hardware that will be processed for Artemis missions. To accomplish the task of processing and preparing SLS for launch, Exploration Ground Systems and its contractor, Jacobs, are practicing lifting procedures of the core stage using a full-scale mock-up, called a pathfinder, in the Vehicle Assembly Building at the agency's Kennedy Space Center in Florida.


Workers watch as two cranes are used to lift the Space Launch System Core Stage pathfinder high up in the transfer aisle of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida on Oct. 16, 2019.

The team is rehearsing moving and lifting maneuvers so that crews are trained on how to handle the core stage and certify all ground support equipment works properly before the actual core stage arrives for Artemis I.

"Practicing handling operations with full-scale pathfinders offers the respective teams essential hands-on experience for working with such immense structures before the one-of-a-kind hardware arrives," said Mark Prill, core stage pathfinder lead at the agency's Marshall Space Flight Center in Huntsville, Alabama.

The 212-foot-long pathfinder, similar in size, shape and weight to the massive core stage, arrived at Kennedy's Launch Complex 39 turn basin wharf on Sept. 27, 2019, aboard NASA's Pegasus barge. The pathfinder was the first delivery on the Pegasus barge in support of the agency's Artemis missions. It was offloaded and transported to the VAB on Oct. 1.

Inside the VAB transfer aisle, a lifting fixture, called a spider, was attached to the top, or forward ring of the core stage pathfinder. A transportation and integration fixture, developed at Marshall, was used to move the spider to the core stage pathfinder to enable installation. With the spider secured in place, another crane was attached to the pathfinder's aft end lifting brackets. Workers practiced using the cranes to lift the pathfinder horizontally up from its transporter. Then, crane operators performed a procedure called a breakover to slowly move the pathfinder into the vertical position and lift it up and over Level 16 into High Bay 3. A reverse sequence also was performed, with the core stage lifted up from the high bay, lowered down to the transfer aisle, returned to a horizontal position and secured in its transporter.

"Core stage pathfinder is the first opportunity for the entire Kennedy team to verify, validate and execute the engineering and planning associated with handling of the SLS core stage flight hardware, setting the stage for an experienced workforce and efficient processing for the historic Artemis missions," said Jim Bolton, EGS Core Stage Element Operations manager.

The team will repeat the process several times to ensure Kennedy engineers and technicians are all trained and certified for future core stage operations.

"Experience is the best teacher," Prill said. "Pathfinders allow crews to practice the lifting and transporting techniques that we can't otherwise do with the actual flight hardware. This practice with the pathfinder reduces risk and builds confidence."

Kennedy's multi-user spaceport is preparing the facilities and ground support equipment for NASA's Artemis missions to the Moon and on to Mars. The agency is planning to send the first woman and next man to the lunar surface.

The core stage pathfinder will remain at Kennedy through at least the end of October, when it is slated to be reloaded onto the Pegasus barge for the trek back to the Michoud Assembly Facility in New Orleans.

Last Updated: Oct. 23, 2019
Editor: Linda Herridge

tnt22

Цитировать Chris G - NSF‏ @ChrisG_NSF 26 мин. назад

#Artemis1 Core Stage will hopefully ship to Stennis for Green Run testing by end of the year, says Bob Cabana. #NAC @NASA_SLS

Чебурашка

Второ двигатель пристыковали


tnt22

Цитировать Chris G - NSF‏ @ChrisG_NSF 3 мин. назад

2nd RS-25 main engine is soft mated.  Hard mate in a few days.  Engine 3 install 6 days after that.  4th engine 6 days thereafter.
#NAC #HEO #Artemis1

Чебурашка

Тут нежданчик нарисовался

https://twitter.com/ChrisG_NSF/status/1189594431651008512

ЦитироватьNASA noting they are 1% over the allowable Ignition Overpresssure of the SRBs on SLS even with the Sound Suppresion System.  Issue is with Orion.  They expect a waiver for Artemis 1.  That overpressure is an issue.  It nearly crippled Columbia on STS-1
Will have to do more wind tunnel testing.  Might have to requal Orion hardware or resigned SLS outer mold line
They believe they can close that gap in the overpressure ahead of Artemis 2.  But the requal or redesign are options if they can't.

Превышение аж на целый процент.
В 60-ые годы бы просто забили. Наш блаженный Илон тоже бы забил.
А в насароги сча будут три года план разрабатывать, как это исправить  :D

Alex_II

ЦитироватьЧебурашка написал:
Превышение аж на целый процент.
А в численном выражении это сколько, интересно?
И мы пошли за так, на четвертак, за ради бога
В обход и напролом и просто пылью по лучу...

Старый

А превышение собственно чего? 1% оверпрешера это что и сколько?
1. Ангара - единственная в мире новая РН которая хуже старой (с) Старый Ламер
2. Назначение Роскосмоса - не летать в космос а выкачивать из бюджета деньги
3. У Маска ракета длиннее и толще чем у Роскосмоса
4. Чем мрачнее реальность тем ярче бред (с) Старый Ламер

Чебурашка

Как я понял, ударная волна при запуске твёрдотопливных ускорителей - Shock waves from the SRB thrust

Старый

ЦитироватьЧебурашка написал:
Как я понял, ударная волна при запуске твёрдотопливных ускорителей - Shock waves from the SRB thrust
Батюшки! На целый процент! ;) :) 
1. Ангара - единственная в мире новая РН которая хуже старой (с) Старый Ламер
2. Назначение Роскосмоса - не летать в космос а выкачивать из бюджета деньги
3. У Маска ракета длиннее и толще чем у Роскосмоса
4. Чем мрачнее реальность тем ярче бред (с) Старый Ламер

azvoz

ЦитироватьЧебурашка написал:
Тут нежданчик нарисовался

 https://twitter.com/ChrisG_NSF/status/1189594431651008512

 
ЦитироватьNASA noting they are 1% over the allowable Ignition Overpresssure of the SRBs on SLS even with the Sound Suppresion System.  Issue is with Orion.  They expect a waiver for Artemis 1.  That overpressure is an issue.  It nearly crippled Columbia on STS-1
Will have to do more wind tunnel testing.  Might have to requal Orion hardware or resigned SLS outer mold line
They believe they can close that gap in the overpressure ahead of Artemis 2.  But the requal or redesign are options if they can't.

Превышение аж на целый процент.
В 60-ые годы бы просто забили. Наш блаженный Илон тоже бы забил.
А в насароги сча будут три года план разрабатывать, как это исправить  
Там же написана причина озабоченности:
ЦитироватьThat overpressure is an issue. It nearly crippled Columbia on STS-1

KBOB

Россия больше чем Плутон.

tnt22

ЦитироватьKBOB написал:
Поставят водяные завесы -  https://space.stackexchange.com/questions/31594/whats-the-geometry-of-ignition-overpressure-protecti...

всех дел
Они уже стоят
Цитироватьazvoz написал:
...Ignition Overpresssure of the SRBs on SLS even with the Sound Suppresion System.
тест см. #2118