SLS - space launch system (3-я попытка)

[Mark]

Документы НАСА, доклад для конгрессу о созданию СЛС и Multi-Purpose Crew Vehicle, 2011г.  Preliminary Report Regarding NASA's Space Launch System and Multi-Purpose Crew Vehicley.

http://www.commerce.senate.gov/public/?a=Files.Serve&File_id=6bb9bc53-1ac8-457a-a5a2-018cbb8df292
 

[Mark]

Boeing Numbers Up Sharply on Commercial Satellite, SLS Contracts, 24.10. 2013
 
In an Oct. 23 filing with the U.S. Securities and Exchange Commission, Chicago-based Boeing said that for the nine months ending Sept. 30, the division's revenue was $624 million, up 6 percent from the same period last year. Operating profit, at $486 million, was 7.8 percent of revenue compared with an operating margin of 7.2 percent last year.
Boeing is under contract to build telecommunications satellites for both fixed and mobile applications for Intelsat of Luxembourg and Washington; Inmarsat of London; the Mexican government; Satmex of Mexico; and ABS of Hong Kong. In the three months ending Sept. 30, Satmex confirmed its previously announced purchase of a second Boeing 702 SP all-electric-propulsion satellite.
Boeing said that during the nine months ending Sept. 30, commercial satellite revenue increased by $257 million compared with the same period a year ago. 
Boeing's contracts with NASA on SLS, including the heavy-lift vehicle's core stage and interim upper stage, generated $295 million in additional revenue compared with the same period a year ago.

http://www.spacenews.com/article/financial-report/37840boeing-numbers-up-sharply-on-commercial-satellite-sls-contracts

Чистая прибыль Boeing в III квартале 2013г. выросла на 12% - до 1,158 млрд долл.
 
Чистая прибыль американского аэрокосмического гиганта Boeing в III квартале 2013г. увеличилась на 12% и составила 1,158 млрд долл. по сравнению с прибылью в 1,032 млрд долл. за аналогичный период годом ранее. Такие данные содержатся в распространенном сегодня пресс-релизе концерна. В нем отмечается, что показатель указан в соответствии со стандартами отчетности US GAAP.

Выручка Boeing в июле-сентябре 2013г. увеличилась на 11% и составила 22,130 млрд долл. против 20,008 млрд долл. годом ранее. Прибыль от основной деятельности компании в III квартале 2013г. увеличилась на 20% - до 2,143 млрд долл. (годом ранее - 1,793 млрд долл.).

Скорректированная чистая прибыль в расчете на акцию Boeing за отчетный период составила 1,80 долл. против 1,55 долл. годом ранее.

Аналитики в среднем ожидали, что этот показатель составит 1,55 долл. Выручка концерна ожидалась на отметке 21,66 млрд долл.

По итогам 2013г. в компании Boeing ожидают прибыль на акцию в размере 6,5-6,7 долл. и выручку в 83-86 млрд долл.

http://vpk.name/news/99081_chistaya_pribyil_boeing_v_iii_kvartale_2013g_vyirosla_na_12__do_1158_mlrd_doll.html

[Mark]

ATK Research on NASA Advanced Booster Shows Options on Increasing Performance, Reducing Cost, 28.10.2013

ARLINGTON, Va., Oct. 28, 2013 /PRNewswire/ -- ATK (NYSE: ATK) has achieved a significant milestone in its NASA Research Announcement (NRA) Advanced Booster risk-reduction program for the Space Launch System (SLS) by successfully completing filament winding of a pathfinder Advanced Booster composite case. Ultimately, this Advanced Booster NRA effort will enable NASA and ATK to optimize a case design that will be stronger, yet more affordable than traditional steel cases. In turn, this will provide increased payload performance due to reduced weight inherent in composite materials


"ATK's risk-reduction efforts on this NRA will help NASA with technological development and performance upgrades in the future," said Charlie Precourt, vice president and general manager of ATK's Space Launch division. "It also ties to cost reductions we have made on the existing SLS boosters and advances in our commercial business."
 
The next step in the Advanced Booster NRA program is to continue development of high performance and low-cost propellants that meet the lofty payload and affordability goals of NASA's Space Launch System (SLS). These propellants, many of which are also widely used in ATK commercial solid rocket motors, combined with the achievements made in composite case technology, will provide NASA several options for performance increases for the next generation Advanced Booster.
On the existing SLS boosters ATK's Value Stream Mapping (VSM) process, which is a company-wide business practice, allowed the employees to identify inefficient processes, procedures and requirements to help reach the target condition. Through this process, ATK identified more than 400 changes and improvements, which NASA approved. These changes have reduced assembly time by approximately 46 percent, saving millions of dollars in projected costs for the SLS system.

http://www.prnewswire.com/news-releases/atk-research-on-nasa-advanced-booster-shows-options-on-increasing-performance-reducing-cost-229520631.html

[Salo]

http://www.parabolicarc.com/2013/11/09/wind-tunnel-testing-used-understand-unsteady-side-sls-aerodynamics/             

Wind Tunnel Testing Used to Understand the Unsteady Side of SLS Aerodynamics
             
Posted by Doug Messier
on November 9, 2013, at 5:05 am in News


Wind tunnel testing of an SLS scale model at Ames Research Center. (Credit:
NASA/ARC/Dominic Hart)

 MOFFETT FIELD, Calif. (NASA PR) – Think about a time you've been a passenger in a car and stuck your hand out the window. As your speed increases, so do the vibrations in your hand. Trying to keep those fingers steady as the wind whips around them at 75 mph gets pretty tricky, right?
You've just had a quick lesson in unsteady aerodynamics, something engineers are researching and testing on a much larger scale and with supersonic speeds using wind tunnel technology. The wind tunnel tests, recently conducted at NASA's Ames Research Center in Moffett Field, Calif., will be used to enhance the design and stability of the Space Launch System (SLS), NASA's new heavy-lift launch vehicle.
The SLS capability is essential to America's future in human spaceflight and scientific exploration of deep space. Only with a heavy-lift launch vehicle can humans explore our solar system, investigate asteroids and one day set foot on Mars.
"The aeroacoustic tests we just completed at Ames are all about unsteady aerodynamics," said John Blevins. Blevins is the lead engineer for aerodynamics and acoustics in the Spacecraft & Vehicle Systems Department at NASA's Marshall Space Flight Center in Huntsville, Ala., where the SLS Program is managed for the agency. "Local vibrations can have a major impact on the rocket and critical hardware."
"You don't fly hardware, especially with people on board, unless you can verify the environments they fly in," he added. "There are standard practices we've learned from past successful programs. Wind tunnel testing is a cost-effective way to set the requirements needed for all the rocket's components to sustain the flight."
Four models of three different crew and cargo variations of the SLS, including the 70-metric-ton (77 ton) configuration, were tested in a series of wind tunnels at Ames. The 70-metric-ton configuration will be used for the maiden flight of SLS.
Crews of engineers worked around the clock to accomplish the test objectives. "Since vibrations are very localized, they may affect how hardware on the rocket will work," said Andy Herron, lead data analyst for the aeroacoustics tests at the Marshall Center. "Our job is to figure out what these vibrations are, so when another team is designing something — for example, an avionics box — we can determine if that hardware needs to be moved or isolated on the vehicle. Or, it may be that the design needs to be tweaked a bit – all with the goal that the parts will work the way they are intended."
For the tests, the models were affixed with pressure transducers, or sensors, that measure pressures on the model at specific locations. They were first put in the 11-by-11-foot transonic wind tunnel, with wind speeds ranging from Mach .7 to Mach 1.4. A Mach figure represents the ratio of the speed of an object to the speed of sound in the surrounding medium, like air.
Also included in this test series were critical buffet tests, which determine how air affects the vehicle at low frequencies.
The models were then put in unitary 9-by-7 wind tunnel, with winds ranging from Mach 1.55 to Mach 2.5. This test was high-supersonic flow and more focused on local vibrations. Shock waves attach throughout the vehicle at different protuberances, like the feed line or the boosters.
"This is the fastest acoustic test we've ever done, in terms of Mach speed," said Marshall's Darren Reed, lead engineer for the acoustics test. "We tested a wide range of configurations, Mach numbers, angles and more than 4,000 data conditions — each one with hundreds of transducer measurements."
The next step will be to analyze the test data and share it across the SLS Program for use on the design and development of different components — including the core stage — on the actual vehicle. The core stage, towering more than 200 feet tall with a diameter of 27.6 feet, will store cryogenic liquid hydrogen and liquid oxygen that will feed the vehicle's RS-25 engines.
For more information on SLS, visit: http://www.nasa.gov/exploration/systems/sls/

[SFN]

http://www.nasaspaceflight.com/2013/11/sls-us-proposals-increasing-payload-destination-options/
SLS upper stage proposals reveal increasing payload-to-destination options

[Mark]

New SLS mission options explored via new Large Upper Stage, 20.11.2013

- SLS Mission: Large Crew Habitat Emplacement
- SLS mission: ATLAST Space Telescope Concept
- SLS Mission: Solar Probe 2 Concept
- SLS Mission: Uranus Concept

SLS Mission: Large Crew Habitat Emplacement
Aside from the translunar outpost and Exploration Platform, Boeing also outlines the SLS/LUS duo's launch ability for Bigelow's BA-2100 inflatable habitat module.
"SLS allows delivery of the BA-2100 via direct insertion to a low earth orbit and is the only launch vehicle capable of delivering a payload this large to LEO," notes the Boeing presentation.
Bigelow's BA-2100 inflatable module is considered a self-sufficient module for "long duration human habitation" capable of expanding, after launch, to 2100 cubic meters of pressurized volume.
The module itself would carry all the supplies and equipment needed for its mission, which can range from a commercial space hotel to a proving ground for independent scientific research modules.
For SLS/LUS's part, the BA-2100 could be ins erted directly in LEO (Low Earth Orbit).
Boeing further defines SLS as the only vehicle capable of launching BA-2100 into LEO because of the module's large nature.
According to Boeing, "SLS provides significant mass margin [for BA-2100] that could be used for additional crew consumables or water for radiation protection or additional payloads."

SLS mission: ATLAST Space Telescope Concept
Moving beyond the immediate Earth area, Boeing also identifies several beyond Earth missions that SLS could accomplish easier and in a more cost-effective manner than already existing launchers can.
One of these missions is a proposed ATLAST Space Telescope mission.
Defined as a telescope to "Characterize Exoplanets and search for signs of life," Boeing states that SLS would be able to loft this 8m monolithic or 16m deployable ATLAST telescope to the Earth-Sun L2 Lagrangian point in a single launch.
The current crop of existing EELVs (Enhanced Expendable Launch Vehicles – e.g. Atlas V and Delta IV) would require multiple launches and in-space assembly of the same type of telescope.
As presented in the Boeing presentation, "A monolithic aperture is better than a segmented aperture."

The currently under development James Webb Space Telescope (JWST) is using a segmented, deployed mirror architecture "only because it is the only way to launch a 6.5 meter aperture observatory with a 4.5 meter diameter rocket."
Since a monolithic mirror can "achieve diffraction-limited performance at a shorter wavelength than a segmented mirror with much difficulty, complexity, cost and risk," SLS is a more effective launcher for large-scale space telescopes.
Specifically, the Boeing presentation notes that the ATLAST telescope would be capable of observing "~85 stars 3 times each in a 5-year period, probe super massive black holes (SMBHs), conduct direct measurements of the mass of high redshift SMBHs, enable star formation histories to be reconstructed for hundreds of galaxies, track how and when galaxies assemble their present stars, and measure the mean density profile of dwarf spheroidal galaxies (dSph).
This type of telescope would have 10 times the resolution of the coming JWST and 300 times the resolution power of the Hubble Space Telescope

SLS Mission: Solar Probe 2 Concept
Moving out ever further, Boeing identifies the SLS/LUS capabilities for a proposed Solar Probe 2 mission – the first probe capable of consistent and multiple close encounters with the sun.
For this particular mission, Boeing states that "Solar Probe 2 will provide researchers both in-situ measurements and imagery supporting corona heating and solar wind acceleration investigations."
The probe could also be used as part of a fleet of spacecraft to "develop critical forecasting capability of the space radiation environment in support of human and robotic exploration" of the solar system.
Specifically, the SLS/LUS duo would be capable of placing the Solar Probe 2 into a solar orbit with a low perihelion (minimum of 5 solar radii).


SLS Mission: Uranus Concept
Finally, Boeing outlines the 1.7mt payload delivery possibly of the SLS/LUS to planet Uranus.
According to the presentation, the SLS with the LUS would be able to "Deliver a small payload into orbit around Uranus and a shallow probe in to the planet's atmosphere."
The Uranian mission would be able to study the ice giant's atmosphere and magnetic characteristics, identify the dispersal of heat emissions from Uranus's atmosphere, perform close and detailed fly-bys of the planet's moons (like Cassini currently does at Saturn), and improve our understanding of the "gravitational harmonics of the planet."
Boeing states that utilization of SLS/LUS for this mission would not only shorten the travel time between Earth and Uranus, but also provide for the incorporation of increased spacecraft mass, thereby allowing for the elimination of the need for a Solar Electric Power stage to the payload.

http://www.nasaspaceflight.com/2013/11/new-sls-options-new-large-upper-stage/

[Чебурашка]

Бедные НАСАвцы мучаются пытаясь куда-нибудь пристроить свою большую ракету.

Особенно впечатляет гигантский телескоп.
Глядя, сколько лет делают телескоп им. Дж. Вебба и сколько на это уже потратили денег, даже страшно представить во что обойдётся телескоп ATLAST 
 
Остальные задачи - типа солнечного зонда и АМС к Урану можно решить и с помощью обычных средств выведения с использование грав. манёвров.

[SFN]

Чебурашка пишет:
Остальные задачи - типа солнечного зонда и АМС к Урану можно решить и с помощью обычных средств выведения с использование грав. манёвров.

Представил большой НьюГоризонт делающий 2-3-4 гравманевра. Сколько лет ждать чтобы планеты сошлись? Сколько лет потратится на выоплнение самих гравманевров?

Впрочем, это не обязывает строить СЛС.  Можно собирать тяжелые АМС на орбите. В них обычно больше половины - топливо.

[Apollo13]

Чебурашка пишет:
Глядя, сколько лет делают телескоп им. Дж. Вебба и сколько на это уже потратили денег, даже страшно представить во что обойдётся телескоп ATLAST

Как раз на фоне стоимости телескопа $1 млрд на SLS выглядят совсем небольшой суммой. Может наоборот в сумме даже дешевле выйдет из за того что не прийдется ужиматься.

[pkl]

Чебурашка пишет:
 
Остальные задачи - типа солнечного зонда и АМС к Урану можно решить и с помощью обычных средств выведения с использование грав. манёвров.

И лететь лет 15.

[pkl]

SFN пишет:
 Можно собирать тяжелые АМС на орбите. В них обычно больше половины - топливо.

Нормальные люди так не делают.

[SFN]

Так вообще не делают. А если появится ядреный тягач?
А если не смогут арендовать русский тягач, придется делать СЛС

[Mark]

Algorithms + F/A-18 Jet = Vital Testing for SLS Flight Control System, 19.11.2013
 

Raise your hand if, in a math class, you ever said, "When will I ever use this in my life?"

Four young engineers at NASA's Marshall Space Flight Center in Huntsville, Ala., can answer that question: They are using math to develop algorithms, or complex step-by-step equations, that can make an F/A-18 fighter jet fly like the Space Launch System (SLS) -- NASA's next heavy-lift launch vehicle.
Marshall's Eric Gilligan and Tannen VanZwieten; Jeb Orr, a Draper Laboratory employee; and John Wall, a Dynamic Concepts employee are all working in Marshall's Spacecraft and Vehicle Systems Department. They have spent years developing and refining algorithms for the flight control system on the SLS. That system is the "brain" of the vehicle, designed to steer it along the path to destinations beyond Earth's orbit.
"The rocket has a set of equations that describe its motion," Orr said. "It's all just a math operation. When applied to the model of the rocket, it helps us predict the intended performance."


NASA is no stranger to designing flight control systems for launch vehicles, but the Marshall team of engineers is innovating a new automated system that adds additional performance and robustness to the traditional flight design.
"We're expanding the capabilities of SLS a little bit beyond what we'd normally be able to achieve through a traditional analysis process," Orr said. "With an adaptive algorithm, we can be a little more responsive to anomalies in flight, like unpredictable winds, to ensure the vehicle stays on its trajectory."   
For NASA, this is the first application of an adaptive control concept to launch vehicles, adding the ability for an autonomous flight computer system to retune itself -- within limits -- while it's flying the rocket. The system, called the Adaptive Augmenting Controller, learns and responds to unexpected differences in the actual flight versus preflight predictions. This ability to react to unknown scenarios that might occur during flight and make real-time adjustments to the autopilot system provides system performance and flexibility, as well as increased safety for the crew.
"We needed a way to test our control algorithm, specifically the part that's new -- the adaptive part," added VanZwieten

"A stumbling block for a lot of people is, 'you've got a rocket algorithm, but you want to test it on an airplane?'" VanZwieten said. "It's not immediately clear how the aircraft could match important dynamic features of SLS, but it does. We're flying a similar trajectory on the airplane as we have with the rocket, and the aircraft rotational dynamics are 'slowed down' to match the maneuvering characteristics of a heavy-launch vehicle."
"This is an example of how advanced rocket technology can be checked out in flight without having to be launched into space," noted John Carter, project manager for the flight tests at NASA's Dryden Flight Research Center in Southern California. "Doing this work on the F/A-18 test bed allows for low-cost, quick-schedule tests that can be repeated many times in order to gain confidence in the advanced controls technology, providing some unique testing advantages for this type of control system validation."
"The F/A-18 has a combination of performance and robustness that allows us to fly experiments that would break other kinds of airplanes," added Curt Hanson, Dryden's principal investigator for the experiment, pointing out Dryden's long history of conducting advanced flight controls research with F/A-18 aircraft dating back to the 1980s.
"The airplane can also fly for a much longer period of time than a sounding rocket, so we can conduct a series of tests back-to-back, making small changes between each one to compare the results," Hanson said. "If anything goes wrong, the pilot can turn the experiment off and fly the airplane back to base."
"Our software that's running on the F/A-18 doesn't know that it's flying an F/A-18. It thinks it's flying SLS," Orr added.
The F/A-18 test series, called the Launch Vehicle Adaptive Control (LVAC) experiment, began Nov. 14. Five flights are planned, with more than a dozen tests being conducted during each flight. Although the jet is in the air for 60 to 90 minutes, the algorithm is tested in different scenarios for up to 70 seconds at a time. "We have 20 test cases, each simulating some abnormal conditions, like higher thrust than anticipated or the presence of wind gusts, to see if the algorithm responds as we designed it to do," Gilligan said. "The tests might reveal something we hadn't thought about in our algorithm, which we can go back and modify as necessary."
The team will be manning the control room for all the tests. "We'll be looking at the data coming in real time and making decisions about the test scenarios that will be relayed to the pilot on flight days. We're really excited for the opportunity to get to see our work take off, literally, for the first time," Wall said.
After the initial flight tests, the flight control team will return to Marshall, go over the data and make any changes to the test plans for the remaining flights. "We aim to accomplish as many top-level objectives as possible in the first set of tests and then go to more complex scenarios in our later test series," VanZwieten said. The test series is scheduled to run over the next few weeks.
The new software will be ready to run on the first flight test of the SLS, scheduled for 2017. The flight will feature a configuration for a 70-metric-ton (77-ton) lift capacity and carry an uncrewed Orion spacecraft beyond low-Earth orbit to test the performance of the integrated system. As the SLS evolves, it will provide an unprecedented lift capability of 130 metric tons (143 tons) to enable missions even farther into our solar system to places like Mars

http://www.nasa.gov/exploration/systems/sls/research-jet-tests-sls.html

[pkl]

SFN пишет:
Так вообще не делают. А если появится ядреный тягач?
А если не смогут арендовать русский тягач, придется делать СЛС

SLS + наш буксир - это вообще чумовая вещь будет.

[Mark]

В Nasaspaceflieght рассматривают варианты СЛС с русскими двигателями !
 
http://forum.nasaspaceflight.com/index.php?topic=33327.0

[Bell]

смишкая картинка    http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=33327.0;attach=558492;image

[Mark]

NASA has conducted the second Flight Control Test of solid rocket booster avionics, part of the first two test flights of the Space Launch System (наверно уже было).

An ATK technician performs one last check on the avionics test article for solid rocket boosters in preparation for the second Flight Control Test of NASA's Space Launch System (SLS) at the ATK facility in Promontory, Utah. The test, dubbed Flight Control Test 2, or FCT-2, checked out the thrust vector control system Wednesday, Jan. 30 with the new SLS booster avionics and electrical ground support system.

These avionics and new five-segment boosters will be part of the first two flights of the SLS, America's next heavy-lift launch vehicle managed at NASA's Marshall Space Flight Center in Huntsville, Ala. The thrust vector control system includes a power unit and hydraulic system of actuators that direct the force from the boosters. ATK is the prime contractor for the SLS five-segment booster.

http://www.nasa.gov/exploration/systems/sls/multimedia/gallery/fct_test_1.html

[Mark]

Bell пишет:
смишкая картинка http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=33327.0;attach=558492;image

Думаю и уверен что так не будет!

[Valerij]

Apollo13 пишет:

Чебурашка пишет:
Глядя, сколько лет делают телескоп им. Дж. Вебба и сколько на это уже потратили денег, даже страшно представить во что обойдётся телескоп ATLAST

Как раз на фоне стоимости телескопа $1 млрд на SLS выглядят совсем небольшой суммой. Может наоборот в сумме даже дешевле выйдет из за того что не прийдется ужиматься.

   
Тонкости ценообразования SLS таковы, что, кроме стоимости самого пуска (тот самый миллиард) нужно добавлять стоимость содержания инфраструктуры - порядка двух миллиардов в год, независимо от того, запускается в этот год SLS, или нет. При этом запускать SLS планируется раз в четыре года.....

[Mark]

Valerij пишет:

Apollo13 пишет: 

  Тонкости ценообразования SLS таковы, что, кроме стоимости самого пуска (тот самый миллиард) нужно добавлять стоимость содержания инфраструктуры - порядка двух миллиардов в год, независимо от того, запускается в этот год SLS, или нет. При этом запускать SLS планируется раз в четыре года.....

Нет, я уже писал что будут 2 пуски в год  

Industry leaders claim SLS capability could create new missions, 08.10.2013


Лидеры нескольких основных космических компаний отрасли утверждают, что непревзойденные возможности космической системы запуска (SLS) может создать спрос на дополнительные миссии, которые в свою очередь увеличит скорость полета. Выступая на 6-й симпозиум Мемориал Вернер фон Браун, тяжёлом группа экспертов говорили о их оптимизм, что SLS можно запускать до два раза в год.

http://www.nasaspaceflight.com/2013/10/industry-leaders-sls-capability-new-missions/