Antares (Taurus II)

[salto]

Bell пишет:
что ракета Antares якобы "украинско-американского производства" и была изготовлена на КБ "Южное"

Действительно первая ступень, за исключением двигателя, была спроектирована и изготовлена на Украине (КБ "Южное" ,Южмаш). Это известно всем участникам форума. Но к аварии могли привести те манипуляции с НК33, котрые выполняли сами американцы.

[Seerndv]

Хоть РД-181, Орбитал не успеет. Тем более.

[Дмитрий В.]

Seerndv пишет:
Хоть РД-181, Орбитал не успеет. Тем более.

Куда не успеет?

[Seerndv]

Дмитрий В. пишет:

Seerndv пишет:
Хоть РД-181, Орбитал не успеет. Тем более.

Куда не успеет?

- вот сюда:

According to Frank Culbertson from Orbital Sciences there was an indication of problems 10-12 Seconds into the flight and that the range safety officer sent a destruct command at around 20 seconds

Авария на двигателе, ( если она была на двигателе    ) у РД-181будет развиваться куда быстрее, чем на НК-33.
И да, культуру мытья баков за год они точно повысить не успеют.  :|

[Дмитрий В.]

Seerndv пишет:

Дмитрий В.   пишет:

Seerndv пишет:
Хоть РД-181, Орбитал не успеет. Тем более.

Куда не успеет?

- вот сюда:

According to Frank Culbertson from Orbital Sciences there was an indication of problems 10-12 Seconds into the flight and that the range safety officer sent a destruct command at around 20 seconds

Авария на двигателе, ( если она была на двигателе     ) у РД-181будет развиваться куда быстрее, чем на НК-33.
И да, культуру мытья баков за год они точно повысить не успеют.

Т.е. с НК-33 от индикации проблемы до взрыва прошло 3-5 секунд. Вполне сопоставимо с аварией Зенита-3SL в 2007 г.

[Seerndv]

Дмитрий В. пишет:
Т.е. с НК-33 от индикации проблемы до взрыва прошло 3-5 секунд. Вполне сопоставимо с аварией Зенита-3SL в 2007 г.

- это как 3-5 сек? Орбиталовцы заявляют, что всё сразу пошло не так:

there was an indication of problems 10-12 Seconds into the flight

- у вас опять секретные данные, как про 700 т "Раптор"?  
Кстати, может есть новости и про него?

[Дмитрий В.]

Seerndv пишет:

Дмитрий В.   пишет:
Т.е. с НК-33 от индикации проблемы до взрыва прошло 3-5 секунд. Вполне сопоставимо с аварией Зенита-3SL в 2007 г.

- это как 3-5 сек? Орбиталовцы заявляют, что всё сразу пошло не так:

there was an indication of problems 10-12 Seconds into the flight

- у вас опять секретные данные, как про 700 т "Раптор"?   
Кстати, может есть новости и про него?

Хммм... Онлайн переводчик гласит: "был признак проблем 10-12 Секунд в полет". Хотя я бы перевел так, что на 10-12 секунде полета были обнаружены проблемы. Что, кстати, неплохо коррелирует с видео пуска: на глаз - на 11-й секунде после отрыва от стола видна вспышка в районе ХО, а потом через 2-3 секунды - взрыв.

Про Раптор никакой информации новой нет.

[Bell]

Так там еще чтоли не выяснили причину?

[Seerndv]

http://novosti-kosmonavtiki.ru/forum/messages/forum13/topic7939/message1303978/#message1303978
Ну любой двигатель от мусора надо защищать) На "Союзе-1" по линии окислителя стоит фильтр с ячейкой 200 мкм, а на "Антаресе" 1,1 мм. А такой "фильтр" только тапок днепропетровского монтажника задержит)

У РД-180 160мкм. Надо полагать, у РД-181 такой же фильтр будет. На "Антаресе" кто указывал на размер ячейки - сам Орбитал или Аероджет?

[anik]

Peter B. de Selding @pbdes
Orbital ATK: In Jan 2016 1st stage of new-engine Antares to be test fired, w/ launch of cargo to ISS on March 1. No demo flight planned.

Orbital ATK's Thompson: We've already got CRS-1 ISS cargo supply contract extension from Nasa. Won't say # flights involved, or deal value.

Orbital ATK: We need 5 Antares rocket 1st stge cores frm Ukrainian supplier 2015-16. 3 are complete, 2 nearly so. Looks OK for the moment.

Orbital ATK: We have regular presence at Yuzhnoye/Ukraine to track progress of Antares rocket 1st stge. All OK & we have a Plan B if needed.

[napalm]

anik пишет:
Orbital ATK: In Jan 2016 1st stage of new-engine Antares to be test fired , w/ launch of cargo to ISS on March 1 . No demo flight planned.

Шустрые ребята, молодцом. 

anik пишет:
Orbital ATK: We have regular presence at Yuzhnoye/Ukraine to track progress of Antares rocket 1st stge. All OK & we have a Plan B if needed .

Интересно-то как

[Salo]

http://spacenews.com/re-engined-antares-to-carry-space-station-cargo-in-2016-debut/

Re-engined Antares To Carry Space Station Cargo in 2016 Debut
by Peter B. de Selding — February 19, 2015

The upcoming version of the Antares rocket, which will have a new engine (replacing the AJ-26, above), will debut in March 2016. Credit: Orbital ATK  
 
PARIS — Orbital ATK on Feb. 19 said its revamped Antares rocket featuring a new main engine would make its first launch in March 2016 carrying a fully loaded cargo ship bound for the International Space Station, without a preceding demonstration flight but following a January test firing of the rocket's first stage.
In a conference call with investors, Orbital ATK officials did not provide updates on their contract for the new engines, being built by Energomash of Khimki, Russia — nor were they asked to do so.
But Orbital ATK Chief Executive David W. Thompson did address the situation at Ukraine's Yuzhnoye manufacturing company, which builds the Antares rocket's first-stage cores.
A Yuzhnoye official responsible for selling the company's rocket hardware overseas said here Feb. 4 that business has not been affected by the military conflict with Russia despite the fact that Yuzhnoye is located in Dnepropetrovsk, in eastern Ukraine.
Thompson said Orbital so far has seen no reason to worry that Yuzhnoye would not be able to deliver on its contract.

"We do have a fallback plan if things really deteriorated there," Orbital ATK CEO David W. Thompson said about receiving Antares first-stage cores from Ukraine-based Yuzhnoye. "Right now that does not appear to be happening." Credit: Orbital ATK

"It's an area that we're watching closely, including a near full-time presence at their facilities," Thompson said. "We need five additional first-stage cores over the course of the next two or two-and-one-half years. Three of those are complete and two are almost complete. We do have a fallback plan if things really deteriorated there. Right now that does not appear to be happening."
Orbital's last Antares mission ended in failure when the rocket exploded seconds after liftoff in October, a mishap that destroyed a space station cargo vehicle and hastened the company's pursuit of a new main engine for the launcher.
To make good on its Commercial Resupply Services (CRS) cargo delivery contract with NASA, which calls for a certain amount of payload to be delivered to the space station by late 2016, Orbital contracted with United Launch Alliance of Denver for an Atlas 5 launch of the Orbital-provided Cygnus cargo vehicle.
The Atlas 5 is scheduled to launch the first of the enhanced-version Cygnus modules in October. Thompson said NASA may wish to delay the launch to November depending on space station traffic, but that Orbital will be ready in October.
Then comes the January test firing of the Antares first stage equipped with the new RD-181 engine. "Unless something surprising occurs, we should then be able to proceed pretty expeditiously to the launch of the re-engined vehicle in March of next year, and that will have a full cargo load." Thompson said.
NASA has begun a fresh space station commercial resupply contract competition. Orbital and SpaceX of Hawthorne, California, are bidding for the new work, and Thompson said "it's certainly possible that others submitted proposals" before NASA's December deadline. Thompson said he would expect a NASA decision on the new supply contract, called CRS-2, in June.
The CRS contract generated slightly less than $300 million in revenue for Dulles, Virginia-based Orbital ATK in 2014 and would have been the company's second-largest contract had the merger between Orbital and ATK's aerospace and defense division been in effect for all of 2014.
Orbital ATK Chief Financial Officer Garrett E. Pierce said during the conference call that NASA owed the company $240 million in unbilled CRS-related payments and that the billing would be done in the coming year.
In an indication of how much Orbital's operating parameters are changing with the addition of the ATK business, Thompson said the merged company's biggest contract in 2014 was for small-caliber ammunition production for the U.S. Army, valued at $430 million.
 
NASA's SLS, which Orbital ATK is providing propulsion for, was the company's third-largest contract at $250 million. Credit: NASA

NASA's new heavy-lift Space Launch System rocket, for which Orbital ATK is providing propulsion, was the third-biggest contract, at $250 million. A medium- and large-caliber ammunition contract for the Army and other U.S. military services was in fourth place, at $225 million.
The new Orbital ATK would have reported $4.4 billion in revenue in 2014, with a pretax earnings margin of 9.9 percent.
The company is divided into three divisions — Flight Systems, Defense Systems and Space Systems. Space Systems in 2014 was the smallest and least profitable, with revenue at $1.15 billion and a pretax profit margin of 5.5 percent.
Antares is in the Flight Systems division, while the Cygnus cargo module and the company's satellite production business are in the Space Systems division.
While it is now in last place in revenue and profit, the Space Systems division is expected to grow by 7-9 percent per year in the next three years, compared to 1-3 percent for Defense Systems and 4-6 percent for Flight Systems.
Commercial geostationary-orbit telecommunications satellite sales are what will drive this growth, Thompson said. "That product line is expected to be the fastest-growing of anything we're doing," he said.
Orbital won three commercial telecommunications satellite awards in 2014 and expects to win three or four in 2015, a year when the total number of commercial telecommunications satellites to be ordered is expected to be between 22 and 25.
Orbital's GeoStar-2 and more-powerful GeoStar-3 products both compete at the lighter end of the geostationary satellite range, for missions requiring between 5 and 8 kilowatts of power.

[anik]

Exclusive: Orbital explosion probe said to find debris in engine: sources
http://www.reuters.com/article/2015/02/20/us-orbital-atk-gencorp-explosion-idUSKBN0LO28P20150220

(Reuters) - Last October's explosion of Orbital ATK Inc's Antares rocket may have been triggered when debris inadvertently left in a fuel tank traveled into the booster's main engine, two people familiar with investigations into the accident told Reuters.
The sources said the preliminary findings suggest that a simple assembly mistake by Orbital ATK could have caused the explosion, which destroyed a cargo ship bound for the International Space Station.
Orbital initially linked the explosion to a problem with the turbo pump in one of the two Soviet-era NK-33 engines that power the rocket. GenCorp Inc's Aerojet Rocketdyne unit refurbishes the old motors and resells them as AJ-26 motors.
Orbital ATK on Friday acknowledged that so-called "foreign object debris" was one of more than a half dozen credible causes of the explosion, but said it was not "a leading candidate as the most probable cause of the failure."
Orbital spokesman Barry Beneski said the company-led "accident investigation board," which includes officials from NASA and the Federal Aviation Administration, had not identified any evidence of mishandling of the flight hardware by Orbital.
He said Orbital continued to compare data from the October explosion with a May 2014 test stand failure of a different AJ-26 engine, and prior failures involving AJ-26 ground tests in 2009, 2011 and 2012.
No details have been released on the May 2014 test stand incident, but sources familiar with the earlier investigation said it was likely linked to faulty "workmanship" on the original motor, and additional inspections had been mandated to prevent mishaps with other engines. Orbital also successfully launched one Antares rocket in July 2014, after the May incident.
NASA spokeswoman Stephanie Schierholz said NASA was conducting its own internal "lessons learned" review of the accident, but declined to give any details about individual aspects of the investigation.
She agreed with Orbital that foreign object debris was always considered as a possible cause in aerospace accidents.
If the investigations confirm that debris from the fuel tanks caused the Antares explosion, that could have significant financial and legal effects for Orbital ATK, which was formed by the merger of Orbital Sciences Corp and Alliant Techsystems.
The new findings could also open the door for a legal claim against Orbital by GenCorp, which took a $17.5 million loss in October, after Orbital said the accident had prompted it to accelerate plans to switch to a different engine.
One source said the Orbital investigation could end without declaring a single "root cause" for the explosion. Probes of past accidents have had similar results.
Several sources said it may be difficult to determine conclusively whether the debris entered the engine before the explosion, or as a result of it.
Glenn Mahone, spokesman for Aerojet Rocketdyne, declined to comment on the investigations, noting that they were still underway. He also declined to comment on the cause of the May test stand failure, which is part of the investigation.
One of the sources familiar with the probe said investigators found particles of a crystallized desiccant, or drying agent, in the turbo pump and other parts of the AJ-26 engine. The crystals could have caused sparks and triggered a fire when they hit the turbo pump in the oxygen-rich environment, the source said.
Desiccants are often used to control moisture in fuel tanks but need to be removed before takeoff, the sources said.
While the NASA investigation had not finalized the root cause of the accident, there were multiple signs that suggested some "foreign object debris" had been ingested into the engine from the fuel tanks, one source said.
Antares had four previous successful flights. The Oct. 28 explosion was the first accident since NASA began using commercial providers to fly cargo to the space station.
Orbital already faces steep bills for damage to the launch site, and the need to buy a different rocket to launch its next cargo ship to the space station.
In December, the company said it would buy a booster from United Launch Alliance, a joint venture of Lockheed Martin Corp and Boeing Co, to meet its obligations under a $1.9 billion cargo supply contract with NASA.
Orbital is one of two companies NASA hired to fly 40,000 pounds of cargo each to the station following the retirement of the space shuttles in 2011. Privately held Space Exploration Technologies, or SpaceX, has the other contract, valued at $1.6 billion.
(Reporting by Andrea Shalal; Editing by David Gregorio)

[Seerndv]

Та-а-а-к ... встаёт вопрос ребром о сеточках фильтров и пресловутом "тапке днепропетровского монтажника".
А бабах с РД-181 при таких обстоятельствах точно будет, и будет красочней

anik пишет:
Exclusive: Orbital explosion probe said to find debris in engine: sources
 http://www.reuters.com/article/2015/02/20/us-orbital-atk-gencorp-explosion-idUSKBN0LO28P20150220

(Reuters) - Last October's explosion of Orbital ATK Inc's Antares rocket may have been triggered when debris inadvertently left in a fuel tank traveled into the booster's main engine, two people familiar with investigations into the accident told Reuters.
 The sources said the preliminary findings suggest that a simple assembly mistake by Orbital ATK could have caused the explosion, which destroyed a cargo ship bound for the International Space Station.
Orbital initially linked the explosion to a problem with the turbo pump in one of the two Soviet-era NK-33 engines that power the rocket. GenCorp Inc's Aerojet Rocketdyne unit refurbishes the old motors and resells them as AJ-26 motors.
Orbital ATK on Friday acknowledged that so-called "foreign object debris" was one of more than a half dozen credible causes of the explosion, but said it was not "a leading candidate as the most probable cause of the failure."
Orbital spokesman Barry Beneski said the company-led "accident investigation board," which includes officials from NASA and the Federal Aviation Administration, had not identified any evidence of mishandling of the flight hardware by Orbital.
He said Orbital continued to compare data from the October explosion with a May 2014 test stand failure of a different AJ-26 engine, and prior failures involving AJ-26 ground tests in 2009, 2011 and 2012.
No details have been released on the May 2014 test stand incident, but sources familiar with the earlier investigation said it was likely linked to faulty "workmanship" on the original motor, and additional inspections had been mandated to prevent mishaps with other engines. Orbital also successfully launched one Antares rocket in July 2014, after the May incident.
NASA spokeswoman Stephanie Schierholz said NASA was conducting its own internal "lessons learned" review of the accident, but declined to give any details about individual aspects of the investigation.
She agreed with Orbital that foreign object debris was always considered as a possible cause in aerospace accidents.
If the investigations confirm that debris from the fuel tanks caused the Antares explosion, that could have significant financial and legal effects for Orbital ATK, which was formed by the merger of Orbital Sciences Corp and Alliant Techsystems.
The new findings could also open the door for a legal claim against Orbital by GenCorp, which took a $17.5 million loss in October, after Orbital said the accident had prompted it to accelerate plans to switch to a different engine.
One source said the Orbital investigation could end without declaring a single "root cause" for the explosion. Probes of past accidents have had similar results.
Several sources said it may be difficult to determine conclusively whether the debris entered the engine before the explosion, or as a result of it.
Glenn Mahone, spokesman for Aerojet Rocketdyne, declined to comment on the investigations, noting that they were still underway. He also declined to comment on the cause of the May test stand failure, which is part of the investigation.
 One of the sources familiar with the probe said investigators found particles of a crystallized desiccant, or drying agent, in the turbo pump and other parts of the AJ-26 engine. The crystals could have caused sparks and triggered a fire when they hit the turbo pump in the oxygen-rich environment, the source said.
 Desiccants are often used to control moisture in fuel tanks but need to be removed before takeoff, the sources said.
While the NASA investigation had not finalized the root cause of the accident, there were multiple signs that suggested some "foreign object debris" had been ingested into the engine from the fuel tanks, one source said.
Antares had four previous successful flights. The Oct. 28 explosion was the first accident since NASA began using commercial providers to fly cargo to the space station.
Orbital already faces steep bills for damage to the launch site, and the need to buy a different rocket to launch its next cargo ship to the space station.
In December, the company said it would buy a booster from United Launch Alliance, a joint venture of Lockheed Martin Corp and Boeing Co, to meet its obligations under a $1.9 billion cargo supply contract with NASA.
Orbital is one of two companies NASA hired to fly 40,000 pounds of cargo each to the station following the retirement of the space shuttles in 2011. Privately held Space Exploration Technologies, or SpaceX, has the other contract, valued at $1.6 billion.
(Reporting by Andrea Shalal; Editing by David Gregorio)

[triage]

Seerndv пишет:
Та-а-а-к ... встаёт вопрос ребром о сеточках фильтров и пресловутом "тапке днепропетровского монтажника".

но там

Orbital ATK on Friday acknowledged that so-called "foreign object debris" was one of more than a half dozen credible causes of the explosion, but said it was not "a leading candidate as the most probable cause of the failure."

И ответы на предыдущие аварии двигателей так и не дали...
 

Glenn Mahone, spokesman for Aerojet Rocketdyne, declined to comment on the investigations, noting that they were still underway. He also declined to comment on the cause of the May test stand failure, which is part of the investigation.

Aerojet Rocketdyne не будет причастна к первой ступени при 181?

И кто ставит двигатели на первую ступень и где? Кто будет подготавливать ракету к заправке топливом, удаляя перед этим "crystallized desiccant, or drying agent"....

[Dude]

Оригинально. Забыли силикагель.

[Seerndv]

pnetmon пишет:
Orbital ATK on Friday acknowledged that so-called "foreign object debris" was one of more than a half dozen credible causes of the explosion, but said it was not "a leading candidate as the most probable cause of the failure."

-смотри ниже:

One of the sources familiar with the probe said investigators found particles of a crystallized desiccant, or drying agent, in the turbo pump and other parts of the AJ-26 engine. The crystals could have caused sparks and triggered a fire when they hit the turbo pump in the oxygen-rich environment, the source said.
 Desiccants are often used to control moisture in fuel tanks but need to be removed before takeoff, the sources said.

- и ещё раз вопрос - с какого бодуна они заложили 1.2 мм ячейку фильтра ?

[triage]

там не сказано что было официальной причиной, может это поставщики двигателей (Aerojet) нашептали в связи с потерей покупателя на имеющиеся движки, и что их вины в аварии нету, и они так и не сообщили причины предыдущих проблем с двигателями

и благодаря "crystallized desiccant, or drying agent" у AJ-26 "будет доказана надежность", и его можно снова поставить на Antares, а то Орбитал говорила, что им нужно доказательство надежности двигателя....

Seerndv пишет:
и ещё раз вопрос - с какого бодуна они заложили 1.2 мм ячейку фильтра ?

а более мелкая ячейка смогла бы задержать "crystallized desiccant, or drying agent"?, это не твердое вещество как металл, давлением могло и продавить это вещество

[andr59]

pnetmon пишет: 
и благодаря "crystallized desiccant, or drying agent" у AJ-26 "будет доказана надежность", и его можно снова поставить на Antares

Первые двигатели РД - 181 будут готовы прибыть в США в июне 2015.
Инженеры модифицируют первую ступень Antares чтобы приспособить два двигателя  РД - 181 вместо
двигателей AJ26 пишут на space flight now:

The first RD-181 engines are due to arrive in the United States in June, Russian officials said last month.
Engineers will modify the first stage of the Antares rocket to accommodate two RD-181 engines in place of two AJ26 engines

Что касается AJ26, то президент  Aerojet Rocketdyne Уоррен Боли сказал в интервью от 4 февраля, что  Orbital ATK приостановила ( другое значение слова  suspended - прекратила) работу по контракту по двигателям  AJ26  так как дело движется в сторону завершения...

Warren Boley, president of Aerojet Rocketdyne, said in a Feb. 4 interview that Orbital ATK has suspended work under their contract for the AJ26 engine as the deal moves toward termination.

http://spaceflightnow.com/2015/02/20/orbital-atk-targets-resumption-of-antares-launches-in-march-2016/

[Seerndv]

andr59 пишет:
Первые двигатели РД - 181 будут готовы прибыть в США в июне 2015.
Инженеры модифицируют первую ступень Antares чтобы приспособить два двигателяРД - 181 вместо
двигателей AJ26 пишут на space flight now:

The first RD-181 engines are due to arrive in the United States in June, Russian officials said last month.
Engineers will modify the first stage of the Antares rocket to accommodate two RD-181 engines in place of two AJ26 engines

а что, РД-181 жуют силикагель только так и только ещё лучше работает?