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SLS - space launch system (3-я попытка)
Leonar пишет:
Андрей Иванов пишет:
КК Прокресс как транспортной система снабжения
Не хватит ангары а5.

Ну ды фиг с ним.
Тема про СЛС.
Не правильный ответ.
Для КК Прогресс хватает с большим запасам.  КК Прогресс идет в один конец , решает свои задачи и утилизируется на поверхность Луны ( или орбита захоронения)
Для пилотируемого Союз-МС сложней из-за безопасности экипажа.
РН Ангара-5А выводит РБ. КК Союз выводится отдельно РН Союз-2.

Что касается СЛС, то всё познается в сравнении.
Дешево и сердито по сравнению с системой СЛС + Орион, для такой скромной по размерам станции.

PS  создание варианта "Союза МС" для полетов к Луне будет стоить $400 млн
Изменено: Андрей Иванов - 25.03.2019 17:18:56
По слухам, NASA склоняется к признанию идеи по переносу EM-1 на альтернативные носители нерациаональной.
March 22, 2019

SLS Engine Section Approaches Finish Line for First Flight

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NASA and Boeing have completed the majority of outfitting for the core stage engine section for the first flight of the agency’s new Space Launch System (SLS) rocket. The engine section, located at the bottom of the 212-foot-tall core stage, is one of the most complex parts of the rocket. Technicians at NASA’s Michoud Assembly Facility in New Orleans have installed more than 500 sensors, 18 miles of cables, and numerous other critical systems for mounting, controlling and delivering fuel to the rocket’s four RS-25 engines.

The core stage tanks hold cryogenic liquid hydrogen and liquid oxygen that are combusted by the engines to produce 2 million pounds of thrust to help send SLS to space for missions to the Moon. On the exterior of the engine section, technicians attached cork insulation for thermal protection and painted it white as well as finishing up other systems including fittings where solid rocket boosters attach.

Next, NASA and Boeing, the SLS prime contractor, will add the boat-tail to the bottom of the engine section and finish up some outfitting, integration and avionics functional testing. The boat-tail is an extension that fits on the end of the engine section. The engines are inserted through openings in the boat-tail, which acts much like a fairing to cover and protect most of engines’ critical systems.

The engines are mounted inside the engine section, and only the RS-25 engine nozzles extend outside the boat-tail. The team is using lessons learned building and outfitting the engine section for the first integrated flight of SLS to accelerate outfitting of the engine section for the second SLS mission. The primary structure of the core stage engine section for the second SLS flight has been built and covered with primer as it prepares for its outfitting and is visible in this image, just behind the first engine section.

Image Credit: (NASA/Jude Guidry)

Last Updated: March 26, 2019
Editor: Lee Mohon
"Попка" моей любимой ракеты

Michael Baylor‏ @nextspaceflight 1 ч. назад

Bridenstine on SLS/Orion launch dates:

EM-1: Uncrewed in 2020*
EM-2: Crewed in 2022

*Said earlier that June 2020 was unfeasible, so they must now be targetting sometime in the second half of next year.
NASA Television Upcoming Events

All times Eastern


April 4, Thursday

2:30 p.m. – RS-25 Engine Test
18:30 UTC
EM-1 Alternative Study overview.

NASASpaceFlight Videos

Опубликовано: 1 апр. 2019 г.

A fascinating overview of the EM-1 study that showed commercial alternatives didn't really work out as viable.
https://www.youtube.com/watch?v=rEkaWMKg_2w (6:51)
Town Hall with NASA Administrator Jim Bridenstine


Опубликовано: 1 апр. 2019 г.

Headquarters hosted an agencywide town hall with NASA Administrator Jim Bridenstine on Monday, April 1, at 1:30 p.m. EDT. NASA HQ employees were invited to join the Administrator in the Webb auditorium for this important discussion on our Moon to Mars plans.
https://www.youtube.com/watch?v=o2gz2E-Wrws (54:31)
Джими только что про пуск SLS сказал

"....by the end of twenty twenty..."  - конец 2020
Джими наивный мальчик:  "We start to meet schedules, we start to meet cost..."     :D

Что-то у него общее с Рогозиным есть  
Изменено: Чебурашка - 02.04.2019 18:12:19
Чебурашка пишет:
конец 2020
Это всегда означает переезд на на следующий год минимум. )))
Чебурашка пишет:
Что-то у него общее с Рогозиным есть
Два сапога. Только у этого денег больше. )
SLS RS-25 Engine Test, 4 April 2019


Опубликовано: 4 апр. 2019 г.

An Aerojet Rocketdyne RS-25 rocket engine was tested on the A-1 Test Stand at the John C. Stennis Space Center in Mississippi, on 4 April 2019, at 19:35 UTC (14:35 CDT, 15:35 EDT). The test had a duration of 500 seconds.NASA’s Space Launch System (SLS) will be powered by four RS-25 engines firing simultaneously.

Credit: NASA
https://www.youtube.com/watch?v=iHp6_qu5v1s (9:15)
NASA Stennis Live Stream

NASA Stennis

Трансляция началась 94 минуты назад
https://www.youtube.com/watch?v=DTebtCJgoF0 (16:18)
NASA Achieves Testing Milestone with Engines for Initial SLS Missions

NASA Stennis

Опубликовано: 4 апр. 2019 г.

NASA conducted a hot fire test of RS-25 flight engine No. 2062 on the A-1 Test Stand at Stennis Space Center on April 4, with a full-duration of 500 seconds. The hot fire caps more than four years of testing for engines that will help power the first four missions of NASA’s new Space Launch System (SLS) rocket. All 16 former space shuttle main engines that will help launch the first four SLS missions have undergone acceptance testing and have completed developmental and acceptance testing for new controllers to be used by the engines. It also concludes a 51-month test series that demonstrated RS-25 engines can perform at the higher power level needed to launch the super heavy-lift SLS rocket.
https://www.youtube.com/watch?v=tIME9IUQoDg (8:50)
April 5, 2019

NASA Achieves Rocket Engine Test Milestone Needed for Moon Missions

NASA is a step closer to returning astronauts to the Moon in the next five years following a successful engine test on Thursday at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. The latest “hot fire” was the culmination of four-plus years of testing for the RS-25 engines that will send the first four Space Launch System (SLS) rockets into space.

NASA conducts a test of RS-25 flight engine No. 2062 on April 4 on the A-1 Test Stand at Stennis Space Center near Bay St. Louis, Miss. The test marked a major milestone in NASA’s march forward to Moon missions. All 16 RS-25 engines that will help power the first four flights of NASA’s new Space Launch System rocket now have been tested.
Credits: NASA/SSC

“This completes four years of focused work by an exceptional Stennis test team,” Stennis Director Rick Gilbrech said. “It represents yet another chapter in Stennis’ long history of testing leadership and excellence in support of this nation’s space exploration efforts. Everyone involved should feel proud of their work and contributions.”

Thursday’s hot fire on Stennis’ A-1 Test Stand completed:
  • Acceptance testing of all 16 former space shuttle main engines that will help launch the first four SLS missions. NASA has contracted with Aerojet Rocketdyne to build new RS-25 engines for additional SLS missions, and work already is underway to do so in the company’s factory in Canoga Park, California.
  • Developmental and flightworthy testing for new controllers (plus one spare) to be used by the heritage RS-25 engines for the first four missions.
  • A 51-month test series that demonstrated RS-25 engines can perform at the higher power level needed to launch the super heavy-lift SLS rocket.
“Engines are now a ‘go’ for missions to send astronauts forward to the Moon to learn and prepare for missions to Mars,” said Johnny Heflin, deputy manager of the SLS Liquid Engines Office at NASA’s Marshall Space Flight Center in Huntsville, Alabama. “We’re ready to provide the power to explore the Moon and beyond.”
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Last Updated: April 5, 2019
Editor: LaToya Dean
Изменено: tnt22 - 05.04.2019 18:44:51
5 АПР, 17:25
NASA завершило огневые испытания двигателей RS-25, предназначенных для полетов на Марс

Двигатели предназначены для ракеты Space Launch System

ВАШИНГТОН, 5 апреля. /ТАСС/. NASA объявило в пятницу о завершении программы огневых испытаний 16 усовершенствованных двигателей RS-25, предназначенных для ракет-носителей Space Launch System (SLS), с помощью которых США рассчитывают начать освоение Марса.

Как отметила пресс-служба американского космического ведомства, США "стали на шаг ближе к возвращению в ближайшие пять лет астронавтов на Луну... и к подготовке марсианских миссий".

RS-25 ранее устанавливались на шаттлах, эксплуатация которых была завершена в 2011 году после 135 запусков. От этой программы в распоряжении NASA осталось 16 двигателей, которые были модернизированы под параметры носителя SLS. Их огневые испытания проводились, начиная с марта 2016 года, на полигоне Космического центра им. Джона Стенниса, расположенного в Хэнкоке (штат Миссисипи). Последние по времени прошли в четверг: двигатель размером с компактный автомобиль весом 3,6 т успешно отработал 500 секунд.

"Эти шестнадцать двигателей - по четыре на каждый носитель - помогут осуществить первые четыре миссии SLS", - указала пресс-служба.

По заказу NASA разработку новой тяжелой ракеты в течение уже нескольких лет ведет компания Boeing. Предполагается, что SLS сможет выводить на орбиту грузы массой от 70 до 130 т. По расчетам специалистов, один ее запуск будет стоить около $500 млн - в полтора раза меньше, чем каждая миссия шаттлов.

Цель - Марс

SLS будет выводить в космос разрабатываемый пилотируемый корабль Orion. Планируется, что свой первый полет без экипажа с помощью нового носителя он совершит в 2020 году: облетит Луну и вернется на Землю. С экипажем по такому же маршруту - в 2022 году.

В бюджет NASA на 2020 финансовый год, который начнется 1 октября текущего календарного года, заложено $1,78 млрд на SLS. Это примерно на $375 млн меньше, чем на данную программу было выделено Конгрессом на 2019 финансовый год.

Директор NASA Джеймс Брайденстайн, выступая во вторник в комитете по науке, космосу и технологиям Палаты представителей Конгресса, сообщил, что его ведомство намеревается отправить астронавтов на Марс в 2033 году.
Изменено: tnt22 - 05.04.2019 18:30:38
Chris B - NSF‏ @NASASpaceflight 18 мин. назад


SLS flight software and avionics in "run for record" testing -


An amazing 5,000+ word feature/interview (over two pages) by Philip Sloss, along with some photos from his visit.


Lead by Nathan Koga for NSF/L2

Crawler-Transporter 2 Gets Engine Maintenance in Preps for Exploration Mission-1

Anna Heiney
Posted Apr 9, 2019 at 11:21 am

Pat Brown, left, and William Vardaman, mechanical technicians with the Jacobs contracting team, perform engine maintenance on NASA’s crawler-transporter 2 on March 26, 2019.

Even the toughest vehicles need regular maintenance to function at their best. Recently, William Vardaman and Pat Brown, both working under the Jacobs contracting team, performed engine maintenance on NASA’s crawler-transporter 2 in the crawler yard located in the agency’s Kennedy Space Center’s Launch Complex 39 area in Florida.

Vardaman, a mechanical technician with the Jacobs contracting team, performs engine maintenance on NASA's crawler-transporter 2 on March 26, 2019.The massive, tracked vehicles are powered by large electrical power engines and two 16-cylinder American Locomotive Company (ALCO) engines. Vardaman and Brown, both mechanical technicians supporting the agency’s Test and Operations Support Contract, spent several days rebuilding the vehicle’s fuel pump assemblies on both ALCO engines. They also installed new oil pumps that will lubricate the ALCOs fr om the top down before they’re started, minimizing future wear.

This is one of two crawler-transporters that carried rockets and spacecraft, including the Apollo/Saturn V and space shuttle, from the Vehicle Assembly Building (VAB) to the launch pad. Now, they’re getting ready for NASA’s accelerated return to the Moon.

Crawler-transporter 2 has been modified and upgraded to carry the mobile launcher and NASA’s Space Launch System rocket, topped by the Orion spacecraft, for Exploration Mission-1, which will launch in 2020. The agency’s Exploration Ground Systems oversaw extensive upgrades to crawler-transporter 2, including new generators, gear assemblies, roller bearings and brakes, as well as the hydraulic jacking, equalization and leveling (JEL) cylinders that keep its carrying surface level.

Last fall, crawler-transporter 2 carried the newly completed mobile launcher from its construction site north of the VAB, out to Launch Pad 39B, then into the VAB, wh ere the mobile launcher continues extensive testing. The crawler is gearing up for another move of the mobile launcher back to the pad later this spring for more testing.

Photo credits: NASA/Kim Shiflett
Конечно концепция понятна - использовать ранее отработанное. Но с другой стороны длинные  ТТУ, секционные, с стальными корпусами, с низким УИ, как то кривовато. Лучше 4 шт. , половинной длины , кокон, ТТ современного уровня.
Chris B - NSF‏ @NASASpaceflight 5 ч. назад

Boeing, NASA look to finish first SLS Core Stage by end of year -


- Another awesome (and lengthy - over two pages) interview/feature from Philip Sloss


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