SLS - space launch system (3-я попытка)

[mefisto_x]

http://www.nasa.gov/exploration/systems/sls/multimedia/heat-goes-on-as-engineers-start-analysis-on-sls-base-heating-test.html

[mefisto_x]

[Apollo13]

http://www.nasaspaceflight.com/2015/09/sls-manifest-phobos-mars-2039/

SLS manifest options aim for Phobos prior to 2039 Mars landing
September 22, 2015 by Chris Gebhardt



As NASA continues to mature a mission and support architecture path toward its much heralded endeavor of landing humans on Mars, the agency's under-development heavy lift SLS rocket now stands to take on a primary space transportation role via a rapidly increasing flight rate designed to support human missions to Phobos by 2033 and to the surface of Mars by 2039.
Evolving toward Mars: 
For over a decade, NASA has been hard at work developing the successor vehicle to the agency's universally recognized Shuttle Orbiter fleet.
Initially, NASA aimed to transition from the Shuttle Program to the Constellation Program, which would have seen, at least at first, separate launch vehicles for crew (Ares I) and cargo (Ares V).

Nonetheless, funding gaps, critical reports, and a political party change within the US government led to the downfall of the Constellation Program in early 2010 – rocket and Orion capsulein all.However, an Ares IV variant was under consideration in 2007 which would have combined the two launch vehicles into a single configuration.
A meeting in April 2010 subsequently modified outright cancellation of all aspects of the Constellation Program to keep the Orion crew module alive and under development – though its name officially changed from the Orion Crew Exploration Vehicle to the Multi-Purpose Crew Vehicle, with the initial omission of "Orion" from the name in an effort to distance the capsule from the Constellation Program.
"Orion" was later added back into the name, making it the Orion Multi-Purpose Crew Vehicle.




In September 2011, NASA subsequently announced the rocket architecture that would define its Space Launch System (SLS).
Despite bearing an Apollo-era paint scheme on the liquid fueled core stage to distance the rocket's image from that of the Ares V and Ares IV architecture of the Constellation Program, the SLS is an initial blend of the two ideas – a Heavy Lift Vehicle (HLV) capable of launching just human missions, human missions and cargo, or just cargo missions to space.
Since 2011, NASA has continued to refine Orion, SLS, and the agency's overall approach to what will be the seminal and most-famous mission of the 21st century: the landing of the first human beings on another planet.




This refined approach, while criticized by some, has seen NASA proceed through an intense, thought-out, and slow-moving study of numerous variables involving a multi-step, phased program to gain specific knowledge sets deemed necessary for human trips to the red planet.
But through all this, the number of SLS flights needed to undertakehuman missions to Mars was not discussed in earnest, and given the SLS's slow introduction rate of three years between its first two flights,there has been growing concern as to SLS's viability and flight rate.
Now, according to NASA's "Evolvable Mars Campaign: Status Upd ate to SLS Evolvability TIM" from 29 July 2015 (L2), not only have target dates for Phobos and Mars human missions been identified, but the needed flight rate and launch campaigns of the SLS to support such missions have also been identified.
SLS missions for Phobos by 2033 and Mars by 2039 and 2043:
According to the Status Update to SLS Evolvability TIM (Technical Interchange Meeting) presentation, available for download on L2, NASA hopes to place humans in the Martian system by the mid-2030s, with current reference points of crewed missions in 2033 to Phobos,in 2039 to Mars' surface, and in 2043 for the second human Mars surface mission.



As noted by the presentation, "An SLS/Orion launch rate of one per year is sustainable in the Proving Ground."
Importantly, this appears to be a specific reference to SLS's initially slow flight rate.
Current planning documents have, for years, baselined SLS's first mission, the uncrewed EM-1 flight, for 2017/2018,with EM-2, the first human mission of SLS and Orion, not occurring until at least 2021.
EM-3 had subsequently been mentioned as a notional mission occurring sometime thereafter, potentially not until 2023.
This slow rollout of a much heralded and anticipated HLV and crew capsule was worrisome not just from a debut standpoint but also from an unknown and uncertain launch market for SLS.
However, these concerns could prove to be for naught as NASA's near-term Cis-lunar operations begin to take shape and long-range planning for human missions to the Martian system solidify – with current projections shown in the Evolvable Mars Campaign: Status Update to SLS Evolvability TIM presentation showing a total of 41 SLS flights from 2018 through 2046 to build-up to and support human Phobos and Mars surface missions.
Launch sequence to Mars:
In all, the Evolvable Mars Campaign presentation lays out a flight sequence for not just SLS but also for other EELVs (Evolved Expendable Launch Vehicles) and missions that will build toward the eventual 2033 human Phobos mission, 2039 human Mars surface mission, and 2043 follow-up Mars surface mission.



The start of that identified campaign, the EFT-1 flight of Orion, took place on 5 December 2014 and is se t to be followed in 2016 by both the InSight Mars stationary lander and OSIRIS-REx asteroid sample return missions.
InSight and OSIRIS-REx are both slated to launch aboard Atlas V rockets from the Cape Canaveral Air Force Station, FL, in March and September 2016, respectively.
These robotic precursor missions would then be followed in 2018 with the debut of SLS – in its Block I, 70t configuration – on the uncrewed EM-1 circumlunar navigation test flight.



NASA would then shift operations away from SLS and away from its go-to EELV, Atlas V, for two Delta IV Heavy missions in 2020: the Mars 2020 surface rover (Curiosity's beefed up cousin) and the ARRM (Asteroid Redirect Robotic Mission).
The Mars 2020 rover mission would launch in a window extending from July-Sept. 2020 and reach Mars in 2021.
This ARRM mission, slated to launch – pending funding approval – in December 2020, would pave the way for the future mid-2020s SLS crewed mission to the redirected asteroid that ARRM will bring back to a lunar orbit.



Shortly thereafter, in 2021, SLS and Orion would embark on their first crewed mission, the EM-2 Cis-lunar human flight on the SLS Block IB, 105t variant.
At this point, the SLS Block IB would undertake a non-stop once annual flight rate for a series of Cis-lunar missions through 2027.
In 2022, this annual flight would be the co-manifested EM-3 mission (with a crewed Orion mission coupled with the delivery of the Initial Cis-Lunar Habitation cargo element to Cis-lunar space).
Additionally, 2022 would also see NASA use another Delta IV Heavy rocket to launch the Mars Moon Explorers mission.
Then, 2023 and 2024 would see single manifested Cis-lunar flights for the EM-4 and EM-5 missions before the co-manifested EM-6 mission in 2025, which would perform the Asteroid Redirect Crewed Mission.
EMs-7 and -8, the last of the EM missions identified to date, would follow in 2026 and 2027.



At this point, SLS Block II would debut in 2028 with a massive ramp up of SLS launches to three that year.
The first mission of the new SLS Block II variant would fly in the first part of 2028 and launch thePathfinder Entry Descent Landing (EDL) craft to Mars on a test flight for human flight EDL operations.
At this point, the number of SLS flights per year and per mission(Phobos or Mars) would vary depending upon which of two proposed Mars Transfer Vehicle options NASA chooses.
Regardless, the cumulative number of SLS flights needed at this point to perform the Phobos and first two human missions to Mars would remain the same, at 32, with only the flight sequence and payload of those flights undergoing option-specific changes.



Under the first option, a series of 9 SLS launches (between 2028 and 2033) would be needed for the Phobos mission – with one additional SLS flight of Orion needed in 2035 to return the Phobos crew to Earth after they return to Cis-lunar space.
Thus, the total number of SLS flights needed for the Phobos mission under option one stands at 10.
Another 11 SLS flights (between 2034 and 2039) for the first human Mars surface mission would then take place, followed by one SLS flight of Orion in 2042 to return the first Mars surface crew from Cis-lunar space – for a total of 12 SLS flights.
Moreover, 9 SLS flights (between 2038 and 2043) would then be needed for the second human Mars surface mission, with one additional SLS flight in 2046 needed to return the second Mars surface crew to Earth from Cis-lunar space – for a total of 10 SLS flights.
Under the second option, just 8 SLS flights would be needed for the Phobos 2033 mission, while a total of 14 SLS missions would then be needed for the first human Mars surface campaign.
The same number of SLS fights, 10, would be needed for the second Mars surface mission.
(Images: Via NASA and L2 – including SLS renders from L2 artist Nathan Koga)

[che wi]

John Honeycutt Appointed to Manage NASA's Space Launch System Program
http://www.executivegov.com/2015/10/john-honeycutt-appointed-to-manage-nasas-space-launch-system-program/

John Honeycutt, a 16-year NASA veteran and formerly deputy manager of the Space Launch System program, has been named SLS program manager.

He succeeds Todd May and will supervise more than 4,200 civilian and contractor employees who are assigned to perform planning, acquisition, development, testing, evaluation and operational services for NASA's future heavy-lift rocket, the agency said Thursday.

Honeycutt has served as the project's deputy manager over the past two years and oversaw SLS engine tests and design reviews.

He previously worked as manager of the Space Shuttle External Tank Project, deputy manager in the SLS program stages office and deputy chief engineer for the SLS initiative at Marshall Space Flight Center in Alabama.

He joined NASA in 1999 after nine years of work as a contractor in multiple agency missions.

[che wi]

NASA Completes Critical Design Review for Space Launch System
http://www.nasa.gov/press-release/nasa-completes-critical-design-review-for-space-launch-system

For the first time in almost 40 years, a NASA human-rated rocket has completed all steps needed to clear a critical design review (CDR). The agency's Space Launch System (SLS) is the first vehicle designed to meet the challenges of the journey to Mars and the first exploration class rocket since the Saturn V.

SLS will be the most powerful rocket ever built and, with the agency's Orion spacecraft, will launch America into a new era of exploration to destinations beyond Earth's orbit. The CDR provided a final look at the design and development of the integrated launch vehicle before full-scale fabrication begins.

"We've nailed down the design of SLS, we've successfully completed the first round of testing of the rocket's engines and boosters, and all the major components for the first flight are now in production," said Bill Hill, deputy associate administrator of NASA's Exploration Systems Development Division. "There have been challenges, and there will be more ahead, but this review gives us confidence that we are on the right track for the first flight of SLS and using it to extend permanent human presence into deep space."

The CDR examined the first of three configurations planned for the rocket, referred to as SLS Block 1. The Block I configuration will have a minimum 70-metric-ton (77-ton) lift capability and be powered by twin boosters and four RS-25 engines. The next planned upgrade of SLS, Block 1B, would use a more powerful exploration upper stage for more ambitious missions with a 105-metric-ton (115-ton) lift capacity. Block 2 will add a pair of advanced solid or liquid propellant boosters to provide a 130-metric-ton (143-ton) lift capacity. In each configuration, SLS will continue to use the same core stage and four RS-25 engines.

Спойлер

The SLS Program completed the review in July, in conjunction with a separate review by the Standing Review Board, which is composed of seasoned experts fr om NASA and industry who are independent of the program. Throughout the course of 11 weeks, 13 teams – made up of senior engineers and aerospace experts across the agency and industry – reviewed more than 1,000 SLS documents and more than 150 GB of data as part of the comprehensive assessment process at NASA's Marshall Space Flight Center in Huntsville, Alabama, wh ere SLS is managed for the agency.

The Standing Review Board reviewed and assessed the program's readiness and confirmed the technical effort is on track to complete system development and meet performance requirements on budget and on schedule.

The program briefed the results of the review in October to the Agency Program Management Council, led by NASA Associate Administrator Robert Lightfoot, as the final step in the CDR process.

This review is the last of four reviews that examine concepts and designs. The next step for the program is design certification, which will take place in 2017 after manufacturing, integration and testing is complete. The design certification will compare the actual final product to the rocket's design. The final review, the flight readiness review, will take place just prior to the 2018 flight readiness date.

"This is a major step in the design and readiness of SLS," said John Honeycutt, SLS program manager. "Our team has worked extremely hard, and we are moving forward with building this rocket. We are qualifying hardware, building structural test articles, and making real progress."

Critical design reviews for the individual SLS elements of the core stage, boosters and engines were completed successfully as part of this milestone. Also as part of the CDR, the program concluded the core stage of the rocket and Launch Vehicle Stage Adapter will remain orange, the natural color of the insulation that will cover those elements, instead of painted white. The core stage, towering more than 200 feet tall and with a diameter of 27.6 feet, will carry cryogenic liquid hydrogen and liquid oxygen fuel for the rocket's four RS-25 engines.

The integrated spacecraft and payloads are nearing completion on their CDR. Flight hardware currently is in production for every element. NASA is preparing for a second qualification test for the SLS boosters, and structural test articles for the core and upper stages of the rocket are either completed or currently in production. NASA also recently completed the first developmental test series on the RS-25 engines.

[свернуть]

[silentpom]

интересно, а если ее чуть-чуть не хватит, то можно 4 ускорителя от дельты прицепить?

[Nilk]

Так, значит SLS будет оранжевой. Осталось ещё название на Арес сменить и всё пучком 

[Александр Ч.]

Народ уже отметил раскраску бустеров аля Мунрейкер ;-) 

[АниКей]

ВАШИНГТОН, 22 окт — РИА Новости. NASA в четверг объявило об успешном завершении защиты рабочего проекта (CDR) сверхмощной американской ракеты SLS, новая РН США обретет оранжевый цвет.
"Мы утвердили дизайн SLS, успешно завершили первый раунд испытаний двигателей и ускорителей ракеты, все основные части для первого полета сейчас находятся в производстве", — заявил заместитель руководителя развития исследовательских систем NASA Билл Хилл.
По его замечанию, несмотря на возникавшие сложности, проведенный анализ "свидетельствует об уверенности, что мы на верном пути к первому полету SLS и ее использовании для расширения постоянного присутствия людей в далеком космосе".
По оценке менеджера проекта Джона Хоникатта (John Honeycutt), получение разрешения на начало производства является важным шагом в разработке ракеты. На данном этапе были утверждены дизайн центрального ракетного блока, ускорителей и двигателей. Как сообщает НАСА, по итогам рассмотрения технического проекта также было принято решение о том, что новая американская РН сохранит естественный для изоляционных материалов оранжевый цвет и не будет краситься в белый.
США разрабатывают сверхтяжелую ракету-носитель SLS для пилотируемых полетов в далекий космос за пределы Солнечной системы. Первый тестовый полет новой ракеты намечен на 2018 год. Первая ступень SLS, которой предстоит вывести в далекий космос пилотируемый корабль Orion, будет оснащена четырьмя двигателями RS-25.

РИА Новости http://ria.ru/science/20151022/1306626377.html#ixzz3pMrXO6em

[Олег Шляпин]

Nilk пишет:
Так, значит SLS будет оранжевой. Осталось ещё название на Арес сменить и всё пучком  

новая американская РН сохранит естественный для изоляционных материалов оранжевый цвет и не будет краситься в белый.

РИА Новости http://ria.ru/science/20151022/1306626377.html#ixzz3pMvegBvY

[Старый]

Nilk пишет:
Осталось ещё название на Арес сменить и всё пучком  

Нельзя. Потому что это Директ.

[testest2]

На NSF давно писали, что SLS будет рыжей, а на картинках ее рисуют белой во избежание ненужных ассоциаций    

"Мы утвердили дизайн SLS, успешно завершили первый раунд испытаний двигателей и ускорителей ракеты, все основные части для первого полета сейчас находятся в производстве", — заявил заместитель руководителя развития исследовательских систем NASA Билл Хилл.

А РИА Новости все никак не выучит, что слово "дизайн" в этом контексте переводится как "проект".

[Старый]

Блин, а покрасить им слабо?

[Apollo13]

Старый пишет:
Блин, а покрасить им слабо?

Обаме год остался. Уже можно не красить

[Старый]

Из Шаттла выжимали последние крохи ПН. Бак летит почти до орбиты и каждый килограм краски отнимал столько же от ПН. А эту то почему не красят?

[silentpom]

а дельту хэви почему?

[Apollo13]

Старый пишет:
Из Шаттла выжимали последние крохи ПН. Бак летит почти до орбиты и каждый килограм краски отнимал столько же от ПН. А эту то почему не красят?

А зачем? Дельту вон тоже не красят. На картинках SLS был белый исключительно по политическим причинам. Давно было известно что на самом деле он будет оранжевым.

Это еще что. В следующем году мы еще можем услышать запрещенное слово "Луна". Тори Бруно как-то проговорился что Вулкан создается с прицелом на полеты в "cislunar space"

[Team.1]

"Утвердили дизайн", " раунд испытаний", у них там совсем тупари работают или это просто автоперевод?)))
Кстати, а как в нашей терминологии звучит этот 'CDR- critical design review', это рабочий проект?

[Старый]

Apollo13 пишет: 
Это еще что. В следующем году мы еще можем услышать запрещенное слово "Луна". Тори Бруно как-то проговорился что Вулкан создается с прицелом на полеты в "cislunar space"  

Так вроде о полётах "за Луну" крайние несколько лет только и говорят?

[Apollo13]

Старый пишет:

Apollo13 пишет:
Это еще что. В следующем году мы еще можем услышать запрещенное слово "Луна". Тори Бруно как-то проговорился что Вулкан создается с прицелом на полеты в "cislunar space"    

Так вроде о полётах "за Луну" крайние несколько лет только и говорят?

В НАСА после закрытия Созвездия было строжайше запрещено произносить слово "Луна". А облеты Луны на Орионе и доставка астероида подавались под соусом "отработки технологий" для Марса. Теперь же по мере приближения выборов вполне могут достать из чулана базу в Лагранже, а то и Альтаир