CST-100 Starliner (Orbital Flight Test) - Atlas V N22 (AV-080) - CCAFS SLC-41 - 20.12.2019, 11:36 UTC.

Автор tnt22, 26.10.2019 23:55:23

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Denis Voronin

Тут надо чуть перефразировать вопрос: длинный список пунктов это понятно, то что там больше половины галочка это тоже понятно, но все эти пункты являются равнозначными или у них есть некие коэффициенты? Или разделение на основные и дополнительные?
Кривыми должны быть извилины, а не руки.

Serge V Iz

В каком плане равнозначными? В смысле вероятности неблагоприятных, скажем для жизни и здоровья экипажа последствий? Наверняка все разные )

Но в смысле подтверждения/неподтверждения требуемого свойства или характеристики, все они потребуют обстоятельного ответа как, почему и так далее )

Дмитрий Инфан

ЦитироватьДмитрий В. написал:
Отчего же? БОльшая часть целей полёта достигнута.
И РД-180 статистику улучшил.

aaa1

ЦитироватьДмитрий В. написал:
 
Ни одна задача запуска в аварийном пуске "Союза" достигнута не была. Потому что запуск как таковой не состоялся, а задачи испытания САС в полёте не было.
Ну да! Ракета могла разнести вдребезги стартовый комплекс, а несработавшая САС убить космонавтов.
А так все системы, ну, кроме несчастного концевика, выполнили свои задачи как положено.

Serge V Iz

Если в сослагательном наклонении, то могло быть вообще иначе: блок ведь все равно отпал (он не мог не отпасть, просто это случилось с задержкой), и если бы ограничения на возмущения движения носителя были выбраны более широкими, команда "АВД" бы не сформировалась, носитель бы отработал это недоразумение, и все бы спокойно поехали дальше. )

LRV_75

ЦитироватьСтарый написал:
 
ЦитироватьДмитрий В. написал:
Потому что запуск как таковой не состоялся
Ну ты скажешь! Счас на тебя набросятся. Скажут: -Раз контакт подъёма был значит запуск состоялся!    
Пуск прошел успешно.
Запуск прошел неуспешно.
Главное не наличие проблем, главное способность их решать.
У каждой ошибки есть Имя и Фамилия

tnt22

https://blogs.nasa.gov/bridenstine/2020/01/07/nasa-update-on-boeings-orbital-flight-test/
https://blogs.nasa.gov/commercialcrew/2020/01/07/nasa-update-on-boeings-orbital-flight-test/
ЦитироватьNASA Update on Boeing's Orbital Flight Test

Jim Bridenstine
Posted Jan 7, 2020 at 3:53 pm


Boeing, NASA, and U.S. Army personnel work around the Boeing CST-100 Starliner spacecraft shortly after it landed in White Sands, New Mexico, Sunday, Dec. 22, 2019. Photo Credit: (NASA/Bill Ingalls)

NASA and Boeing are in the process of establishing a joint, independent investigation team to examine the primary issues associated with the company's uncrewed Orbital Flight Test.

The independent team will inform NASA and Boeing on the root cause of the mission elapsed timer anomaly and any other software issues and provide corrective actions needed before flying crew to the International Space Station for the agency's Commercial Crew Program. The team will review the primary anomalies experienced during the Dec. 2019 flight test, any potential contributing factors and provide recommendations to ensure a robust design for future missions. Once underway, the investigation is targeted to last about two months before the team delivers its final assessment.

In parallel, NASA is evaluating the data received during the mission to determine if another uncrewed demonstration is required. This decision is not expected for several weeks as teams take the necessary time for this review. NASA's approach will be to determine if NASA and Boeing received enough data to validate the system's overall performance, including launch, on-orbit operations, guidance, navigation and control, docking/undocking to the space station, reentry and landing. Although data from the uncrewed test is important for certification, it may not be the only way that Boeing is able to demonstrate its system's full capabilities.

The uncrewed flight test was proposed by Boeing as a way to meet NASA's mission and safety requirements for certification and as a way to validate that the system can protect astronauts in space before flying crew. The uncrewed mission, including docking to the space station, became a part of the company's contract with NASA. Although docking was planned, it may not have to be accomplished prior to the crew demonstration. Boeing would need NASA's approval to proceed with a flight test with astronauts onboard.

Starliner currently is being transported from the landing location near the U.S. Army's White Sands Missile Range to the company's Commercial Crew and Cargo Processing Facility in Florida. Since landing, teams have safed the spacecraft for transport, downloaded data from the spacecraft's onboard systems for analysis and completed initial inspections of the interior and exterior of Starliner. A more detailed analysis will be conducted after the spacecraft arrives at its processing facility.

Boeing's Orbital Flight test launched on Friday, Dec. 20, on United Launch Alliance Atlas V rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. The mission successfully landed two days later on Sunday, Dec. 22, completing an abbreviated test that performed several mission objectives before returning to Earth as the first orbital land touchdown of a human-rated capsule in U.S. history.

Denis Voronin

ЦитироватьSerge V Iz написал:
В каком плане равнозначными?
В том плане что стыковка с МКС может быть главной целью, а может быть одной из целей, а может быть вообще допом. Или же факт стыковки не более важен чем, например, факт удержания температуры внутри в пределах 21..22 градуса. От этого зависит насколько успешным полёт является с точки зрения программы, то что для зрителей фейл совсем не факт что таковой для разработчиков.
Кривыми должны быть извилины, а не руки.

Serge V Iz

Примерно так. Для разработчиков это поосто результат эксперимента, и если выявленные проблемы заключаются только в протокольных ошибках в сторону носителя (хотя, я лично сомневаюсь )) ), то это для них должен быть хороший результат.


aaa1

Цитировать
ЦитироватьTory Bruno  @torybruno    55 мин. назад

Bullseye...

 
Bullshit...

tnt22

https://starlinerupdates.com/starliner-arrives-back-in-florida-teams-hard-at-work-in-2020/
ЦитироватьStarliner arrives back in Florida, teams hard at work in 2020

January 14, 2020


Our Orbital Flight Test Starliner being processed by technicians after return from White Sands Missile Range.

On Wednesday, January 8, the Starliner that flew the uncrewed Orbital Flight Test returned safely to the Kennedy Space Center in Florida. After launching from Cape Canaveral on December 20, 2019, and landing at the White Sands Missile Range on December 22, the Starliner was recovered and prepared for shipment across the country, and then left the desert on January 3.

In general, the plan for post-flight processing of this spacecraft is as follows:
    [/li]
  • Thorough external inspection
  • Hatch opening and visual verification the seal is in good shape and will keep pressure integrity and people safe as the telemetry data indicates
  • Interior inspection and verification the capsule is as clean as the telemetry data would indicate
  • Removal of cover panels and some key components across systems including avionics, propulsion and life support, detailed inspection and verification of those key components after first flight
  • Detailed inspection of chutes, rigging and airbags with emphasis on unexpected chafing and wear-and-tear
  • Assessment of how heat loading during ascent and entry affected docking system and capsule sidewalls, will compare results against pre-flight thermal models
  • Transition to standard post-flight refurbishment and pre-flight testing
In parallel, technicians will continue preparing another Starliner crew and service module for the next flight. That vehicle is currently in the final assembly and processing phases. Starliner engineers and analysts are also working on compiling and understanding all the data collected from the Orbital Flight Test, and together with our NASA customer, the data will be reviewed and decisions will be made based on what is learned. As this process continues, we will provide updates as timely and as accurately as possible, including initial results from external inspections and thermal assessments as early as this week.

In the meantime, an independent Boeing-NASA team has been formed and are reviewing the software anomaly to determine root cause and recommend corrective actions. Additionally, individual teams are evaluating data and conducting comprehensive system-by-system reviews as part of the normal post-flight test process. Boeing teams now have access to and are currently compiling results from the last of the data recorded during flight.

This includes:
    [/li]
  • Compiling the specialized development measurements and comparing them to telemetry data to assess timing and consistency
  • Some demonstration flight instrumentation (DFI) results revealing hull temp and strains, indicating structural integrity and accuracy of design forecasts
  • Correlation of any visual inspection or data observations with the full set available
  • Detailed reviews are underway in partnership with NASA, which we expect to wrap up in a few weeks

tnt22


Boris Mekler

Цитироватьaaa1 написал:
 
Цитировать
ЦитироватьTory Bruno  @torybruno     55 мин. назад  

Bullseye...

 
Bullshit...
С точки зрения Тори Бруно - вполне себе bullseye. ULA тут извозчик, они груз доставили точно на целевую орбиту, а то что дальше Боинг накосячил - это не к ним.


tnt22

https://spaceflightnow.com/2020/01/15/boeing-to-perform-minimal-refurbishment-on-reusable-starliner-crew-capsule/
ЦитироватьBoeing expects 'minimal refurbishment' on reusable Starliner crew capsule
January 15, 2020 | Stephen Clark


Boeing's first space-ready Starliner crew capsule, named Calypso, is back inside the company's assembly facility at the Kennedy Space Center in Florida after a two-day orbital test flight in December. Credit: Stephen Clark / Spaceflight Now

While NASA and Boeing engineers investigate the cause of a software error that cut short the first orbital test flight of the Starliner crew capsule last month, ground teams have returned the spaceship fr om its landing site in New Mexico back to the Kennedy Space Center in Florida.

Preliminary inspections indicate the reusable spacecraft weathered its first trip into orbit better than expected, and Boeing teams are confident the ship will need only "minimal refurbishment" before its next launch with astronauts.

While teams sort out the Starliner software problem, Boeing says the hardware performed as designed.

"It's in really good shape, very little external wear on the outside," said Tim Reith, spacecraft engineering manager for Boeing's Starliner program.

"The team built an awesome vehicle," said Ramon Sanchez, senior operations lead for Boeing's commercial crew program.

"For the most part, the vehicle performed very well, and we're looking at minimal refurbishment to return this thing to flight," Sanchez told reporters Wednesday during a media briefing inside Boeing's Commercial Crew and Cargo Processing Facility at NASA's Kennedy Space Center in Florida.

The capsule landed Dec. 22 at White Sands Space Harbor in New Mexico, descending under parachutes before deploying airbags to cushion its touchdown in the remote desert. The unpiloted Orbital Test Flight lifted off Dec. 20 aboard a United Launch Alliance Atlas 5 rocket fr om Cape Canaveral, but a timing error in the Starliner's software that went undiscovered before launch caused the spacecraft to miss a planned orbital insertion burn.


The crew module's 12 control thrusters consumed less hydrazine fuel than expected during re-entry. The rocket jets are used only during re-entry to control the capsule's orientation. Credit: Stephen Clark / Spaceflight Now

The insertion burn was planned a few minutes after the Atlas 5's Centaur upper stage deployed the Starliner spacecraft on a trajectory with a velocity just shy of that needed to enter a stable orbit. The Atlas 5 put the Starliner where it needed to be, and the Boeing capsule's orbital maneuvering rockets were supposed to ignite to boost the spaceship into a preliminary orbit to begin its pursuit of the space station.

But an on-board mission elapsed timer had a wrong setting, causing the Starliner spacecraft's computers to believe the capsule was operating in a different phase of its mission. The capsule's service module began firing maneuvering thrusters to control the vehicle's pointing, consuming much of the craft's fuel and causing it to miss the automated orbit insertion burn.

The spacecraft was trying to perform two functions at the same time time, Reith said.

"That's where the vehicle got a little confused," he said. "The orbit insertion, which the vehicle thought had already happened in the past, it was trying to prepare for that, as well as do some pointing guidance, and those two events were kind of in conflict with each other.

"That's were we had the vehicle kind of fighting itself, if you will, and the thruster firings going," Reith said. "You've got multiple software sequences running, so that's where it got confused with multiple things going on at the same time.

Ground controllers noticed the problem and tried to intervene, but commands to override the Starliner's automation did not reach the spacecraft in time to perform the planned orbit insertion burn and keep the mission on track to dock with the International Space Station.

"Everything's automated, so the vehicle should have started moving itself toward this orbit insertion burn," Reith said. "When that wasn't happening, the flight control team in Houston and the engineering support teams around the country, we were able to figure that out pretty quick.

"It was very intense," said Reith, who also served as spacecraft chief engineer in the Starliner mission support room during last month's mission. "You also have to remember this was the first time we'd seen it fly, so you have an expectation of what should happen, but at the same time you're not sure what it's going to do. So as you're seeing things for the first time, you're trying to understand is that what it should be doing, or is there something anomalous going on?"

"Essentially, there are two opportunities for us to prepare for that orbit insertion burn," he said. "When the first opportunity missed, and at the same time we were watching the telemetry fr om the vehicle with a lot of thruster firings, you start realizing, OK, something's not right. So the flight control team attempted to send commands, and the vehicle wasn't in a really good orientation fr om an antenna standpoint to receive those commands. So it kind of went on for a while until we got the antennas where we could get a good command to the vehicle. Once we got that command uplinked, we were able to turn the vehicle and do that orbit insertion burn that at least raised it up a little bit. But by that time we had expended a lot of propellant."

Instead of performing the pre-programmed insertion burn, the Starliner fired its engines to reach a stable orbit that ensured the capsule could safely return to Earth. By that time, the capsule had consumed too much propellant to complete the required burns to pursue the space station and perform a docking.

"We had full control of the vehicle," Reith said. "It didn't tumble or anything like that."

The original eight-day flight plan, which included demonstration maneuvers and a docking with the space station, was shortened to two days. The capsule successfully landed in New Mexico, achieving many — but not all — of the planned objectives of Boeing's Orbital Flight Test.

The demonstration mission was a precursor to the first planned Starliner mission with astronauts — known as the Crew Flight Test — scheduled to launch later this year.


An instrumented flight test dummy, nicknamed Rosie after the iconic World War II character "Rosie the Riveter," remains in her seat inside the Starliner spacecraft after a two-day mission in Earth orbit. Credit: Stephen Clark / Spaceflight Now

Boeing technicians are assembling a separate Starliner spacecraft for the Crew Flight Test. Located in an integration cell just a stone's throw away from the Starliner that just returned from space, the CFT capsule will carry Boeing astronaut Chris Ferguson and NASA crewmates Mike Fincke and Nicole Mann to the space station.

Boeing has produced two reusable human-rated spaceships — each designed for 10 missions — for flights to the space station under a $4.2 billion contract with NASA. The space agency has signed a similar $2.6 billion contract with SpaceX in 2014 for development of the Crew Dragon spacecraft, on which astronauts will fly new vehicles on each mission.

The CFT mission with Ferguson's crew will pave the way for operational crew rotation flights to the station, the first of which will be commanded by NASA astronaut Suni Williams, a veteran of two long-duration space station expeditions. Williams is slated to launch and land on the same capsule that flew on last month's two-day demonstration mission.

She named the spacecraft "Calypso" after its Dec. 22 landing in honor of the research vessel used by French explorer Jacques Cousteau.

The planned Starliner flight sequence hinges on the outcome of an investigation into the cause of the software error that prevented the Calypso spacecraft from docking with the space station last month.

"The independent team will inform NASA and Boeing on the root cause of the mission elapsed timer anomaly and any other software issues and provide corrective actions needed before flying crew to the International Space Station for the agency's Commercial Crew Program," wrote NASA Administrator Jim Bridenstine on the space agency's website Jan. 7.

The investigation is expected to last about two months, according to Bridenstine.

The NASA boss said agency officials are evaluating data from the Starliner's Orbital Flight Test to determine if another unpiloted demonstration flight is required before the capsule is cleared to launch with astronauts. A decision on that matter is not expected for several weeks, Bridenstine wrote.

"Although docking was planned, it may not have to be accomplished prior to the crew demonstration," he wrote. "Boeing would need NASA's approval to proceed with a flight test with astronauts on-board."


The Starliner spacecraft is seen Jan. 15 inside Boeing's Commercial Crew and Cargo Processing Facility at NASA's Kennedy Space Center in Florida. A darkened streak from the heat of atmospheric re-entry is visible on the capsule's thermal blankets, and the ship's hatch is open. Credit: Stephen Clark / Spaceflight Now

After the Starliner's landing Dec. 22, Boeing teams secured the spacecraft and transported it via truck from New Mexico back to the Kennedy Space Center, wh ere it arrived Jan. 8.

"Currently, it's under assessment by ... many of our experts," Sanchez said Wednesday. "We have got the hatch door open. We will take an assessment of the exterior of the vehicle.

"We have to make sure the interior is flight-ready," Sanchez said. "It's an awesome vehicle, well-built with safety and quality in mind."

The Starliner spacecraft includes two segments — a crew module and a service module — for the trip to the International Space Station. After departing the station and performing a braking burn to re-enter the atmosphere, the crew module jettisons the service module to burn up over the Pacific Ocean.

The crew module is fitted with an ablative base heat shield, thermal tiles, and protective blankets to withstand the scorching temperatures as hot as 3,000 degrees Fahrenheit (1,650 degrees Celsius) during re-entry. The capsule jettisons a forward heat shield at the start of its parachute deployment sequence, then releases the base heat shield to plunge to the ground, allowing airbags to inflate to soften the crew module's landing.

That means each Starliner mission will fly with a new service module, and new forward and base heat shield elements. Teams will also have to re-pack parachutes and replace the mortars that fire to unfurl the chutes during descent, and an ascent fairing that covers the Starliner docking module will also come new with each mission, according to Sanchez.

According to Reith, a manager on the Starliner engineering team, the reusable thermal blankets on the "backshell" panels around the circumference of the Starliner spacecraft showed little sign of damage from the re-entry.

"You can see on the front — the hot side or leading edge side of the vehicle wh ere the tiles are — you see a little deposit there," Reith said. "We'll go through and clean that up," Reith said. "That should come right off.

"There's a dark diagonal stripe up the vehicle," Reith told reporters Wednesday. "There's a matching one on the other side. That's wh ere the plasma flow is. It comes around the vehicle ... So as it was picking up ablation off the base heat shield, it streaked up there and left that deposit.

"We've got high expectation that's going to come right off, so we'll be able to clean this vehicle up and get it to near factory-fresh (condition) again for its next mission" Reith said.

"Right now, the team is doing their external inspections," Reith said. "We've had teams in looking at the top wh ere the NASA docking system is. They've done all their inspections looking at that, and also the thermal protection system team, they've been looking at the blankets, the tiles we have.

"Once they're done with their work, we'll go ahead and take the backshell panels off," he said. "These are the gray panels that enclose all of the equipment inside ... Then we'll start doing our inspections on the inside. At the same time we'll be starting to take the cargo (that was to be delivered to the space station) off, Rosie will come off, and then we'll start our refurbishment of the inside of the vehicle getting ready for the next mission."

Reith said Boeing teams will also remove the airbags from the bottom of the crew module to check for damage. The airbags are also designed to be reused on future flights.

"It looks really clean from a standpoint of the wear-and-tear it took coming through re-entry," Reith said. "Our TPS (thermal protection system) team is really, really surprised. They expected more blanket wear, more deposits. They're really happy with the way the vehicle performed."

tnt22

ЦитироватьEpisode 01: The Orbital Test Flight of Boeing's Starliner

NASA

16 янв. 2020 г.

On December 20th 2019 Boeing conducted the first test flight ever of their new spacecraft Starliner. Together, NASA and Boeing made history in the face of challenges. This test flight was another step toward returning American space launch capability to American shores.
https://www.youtube.com/watch?v=ryPKdGVNtJohttps://www.youtube.com/embed/ryPKdGVNtJo (20:04)


Чебурашка

#1498
Помимо проблем с таймером, у Старлайнера были и проблемы с двигателями.
Но что-то мне подсказывает, что и так сойдёт

https://arstechnica.com/science/2020/01/nasa-and-boeing-are-closely-looking-at-starliners-thruster-performance/

triage

ЦитироватьЧебурашка написал:
Помимо проблем с таймером, у Старлайнера были и проблемы с двигателями.
Но что-то мне подсказывает, что и так сойдёт

 https://arstechnica.com/science/2020/01/nasa-and-boeing-are-closely-looking-at-starliners-thruster-performance/

Цитировать...
The NASA release did not mention thruster performance, but an agency source told Ars that engineers are looking closely at the performance of the Starliner propulsion system. In addition to four large launch abort engines, the service module has 28 reaction control system thrusters, each with 85 pounds of thrust and 20 more-powerful orbital maneuvering thrusters, each with 1,500 pounds of thrust.

During the post-flight news conference Jim Chilton, Boeing's senior vice president of the Space and Launch division, said the service module thrusters were stressed due to their unconventional use in raising Starliner's orbit instead of performing one big burn. As a result, the company had to shut down one manifold, which effectively branches into several lines carrying propellant to four thrusters. "We even shut down one manifold as we saw pressure go low 'cause it had been used a lot," he said.

The NASA source said eight or more thrusters on the service module failed at one point and that one thruster never fired at all.

In response to a question about thruster performance, Boeing provided the following statement to Ars: "After the anomaly, many of the elements of the propulsion system were overstressed, with some thrusters exceeding the planned number of burns for a service module mission. We took a few cautionary measures to make sure the propulsion system stayed healthy for the remainder of the mission, including re-pressurizing the manifold, recovering that manifold's thrusters. Over the course of the mission we turned off 13 thrusters and turned all but one back on after verifying their health."
...
А чего еще ожидать если некорректное использование