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#620
by
rdale
on 20 Jun, 2024 01:09
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As a reminder, before you press the POST button ask yourself:
Is this related to THIS MISSION and its events up through return to Earth? If so - you're in the right spot.
If it's about the capsule's design, future missions, past missions, or the weather - you're not.
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#621
by
zubenelgenubi
on 20 Jun, 2024 17:31
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Moderator:
FYI, I deleted the "disaster pr0n"
Starliner thread that wings_no_capsules created.
NSF and its forum do not exist to serve as a rubbish bin for spaceflight speculation, even if the alleged journalists at CNN or yahoos with a click-bait social media account create such baloney. 🐂 🤔 🙄
The existing update and discussion threads are currently sufficient.
Also, I split/merged the 11
Starliner-1 scheduling posts to the
Starliner-1 launch thread in the ULA section.
https://forum.nasaspaceflight.com/index.php?topic=57234.0And, I split/merged 8 discussion posts to the current Starliner discussion thread.
https://forum.nasaspaceflight.com/index.php?topic=56372.0Carry on. 🫡
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#622
by
FutureSpaceTourist
on 20 Jun, 2024 23:32
-
https://starlinerupdates.com/recent-starliner-docked-activities/Recent Starliner Docked Activities
June 20, 2024
Starliner has completed 77 of the original 87 flight-test objectives, with the remaining 10 to occur between undocking and landing.
Crew Flight Test (CFT) astronauts Butch Wilmore and Suni Williams are testing more capabilities of the Starliner spacecraft and contributing to International Space Station operations. The entire CFT team is taking advantage of the additional days docked to learn as much as possible about Starliner to inform the ongoing certification process.
“Starliner is performing very well and we are getting exactly what we wanted out of this flight test by learning things you can only learn in flight,” said Mark Nappi, Starliner program manager, Boeing Commercial Crew. “The crew has been incredibly supportive of this learning on orbit, working with the ground teams, to improve and sharpen the experience for future crews.”
On Saturday, June 15, a hot fire test was performed on Starliner’s reaction control system (RCS) thrusters in the service module propulsion system. Wilmore and Williams sat in the cockpit during the tests so teams could hear their feedback on the sounds and feel of the thrusters firing. At the conclusion of the hot fire testing, the helium manifolds were isolated and the leak rates in each manifold decreased.
Other Starliner tasks included cabin sound checks, Communications Head Protection Assembly (CHPA) adjustments, and filming of on-orbit hatch operations for future crews to study. While the spacecraft was powered up, data was transferred from on-board recorders to support engineering assessments and software was uploaded with upcoming landing parameters.
Sunday, June 16, Boeing and NASA participated in a mission dress rehearsal at White Sands Space Harbor in New Mexico ahead of Starliner’s return. The combined Landing and Recovery Team (LRT) simulated convoy operations and recovery of the crew and Starliner.
Wilmore and Williams helped the Expedition 71 crew with ISS tasks, such as research and maintaining electronic, life support, and orbital plumbing systems.
Williams transferred wastewater between station modules, replaced a video camera in the Columbus laboratory module, moved to the Kibo lab and watered the Advanced Plant Habitat to prepare for upcoming science operations, and packed trash in a cargo return vehicle.
Wilmore swapped out thermal gear that protects electronics hardware on station and also worked in the Harmony module’s maintenance work area setting up hardware and researching liquid flows to improve the health care and food industries. The Gaucho Lung study he supported is exploring ways to optimize drug delivery for respiratory conditions, treat infants with respiratory distress syndrome, and prevent contamination of tubes with intermittent flows of liquids.
On Thursday, June 20, the crew took inventory of cargo stowed in Starliner for weight and center of gravity data analysis. Wilmore also made an adjustment to his commander seat in Starliner to account for an elongated spine from being on orbit, another key capability tested for future long-duration flights.
For more Starliner highlights, follow @BoeingSpace on X, starlinerupdates.com and the CFT mission website.
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#623
by
Ken the Bin
on 21 Jun, 2024 17:03
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Updated USCG notices from yesterday (it was rather a busy day so I didn't get to them until today).
USCG District 11 weekly Local Notice to Mariners.
ARIZONA-OFF SHORE CALIFORNIA-LAUNCH REENTRY-HAZARDOUS OPERATION
Hazardous operations will be conducted by Boeing CST-100 Starliner Crewed Flight Test (CFT) is scheduled to undock from the International Space Station(ISS) No Earlier Than (NET) 26 June, 2024 at 0210(GMT) with landing at White Sands Space Harbor(WSSH), New Mexico on 26 June, 2024 at 0851(GMT) on an Ascending approach. If the deorbit burn is waived off on 26 June, 2024, the backup landing site is WSSH, New Mexico on 27 June, 2024 at approximately 1610(GMT) on a Descending Approach. Mariners operating offshore are advised of potential of falling debris that may present a hazard to vessels in the Pacific Ocean due to space operations. Mariners are advised to avoid the below bounded area and operate in a heightened state of awareness.
Hazard Area A:
0810Z 26 June, 2024 until 0912Z 27 June, 2024
SOUTHEASTERN PACIFIC & SOUTH PACIFIC
21-16-00N 132-49-00W
18-25-00N 134-15-00W
05-04-00S 170-48-00W
02-22-00N 170-59-00W
Hazard Area B:
1530Z 27 June, 2024 until 1645Z 27 June, 2024
NORTHEASTERN PACIFIC AND NORTH PACIFIC
49-12-00N 132-49-00W
47-00-00N 134-15-00W
50-41-00N 170-48-00W
52-03-00N 170-59-00W
23-10-00N 166-40-00W
Mariners are advised to remain clear of these areas for the duration of operations. For more details or comments contact Matt Dulski at 281-483-9112 or [email protected].
USCG District 17 Local Notice to Mariners.
ALASKA – NORTH PACIFIC
***UPDATED in LNM 25/24*** The Boeing CST-100 CFT Spacecraft Mission is scheduled to land at the White Sands Space Harbor or the White Sands Missile Range at 0851 UTC on June 26th, 2024. The reentry into the atmosphere will create debris that may present a hazard to vessels in the Pacific Ocean in the following areas during the time windows indicated.
First Service Module Reentry Opportunity:
Hazardous Operation: 260810-260912 UTC which is 0010-00112 Alaska Time on June 26th, 2024
Geographic Region: Southeastern Pacific & South Pacific
Hazard Area Bounds: POINT 1: 21°16’N, 122°22’W
POINT 2: 18°25’N, 118°33’W
POINT 3: 05°04’S, 136°09’W
POINT 4: 02°22’S, 139°54’W
Second Service Module Reentry Opportunity:
Hazardous Operation: 271530-271645Z UTC which is 0730-0845 Alaska Time on June 27th, 2024
Geographic Region: North Eastern Pacific and North Pacific
Hazard Area Bounds: POINT 1: 49°12’N, 132°49’W
POINT 2: 47°00’N, 134°15’W
POINT 3: 50°41’N, 170°48’W
POINT 4: 52°03’N, 170°59’W
POINT 5: 53°10’N, 166°40’W
Mariners are requested to remail clear of the hazard areas during these reentry windows. Direct questions/concerns to Matt Dulski at 281-483-9112 or by email to [email protected] or Ashley Tarpley at (346) 578-2369 or by email to [email protected].
Also these two NGA Space Debris notices from today (the same notice for two different Navigational Areas).
210933Z JUN 24
HYDROPAC 2146/24(GEN).
EASTERN PACIFIC OCEAN.
ALASKA.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS:
A. 260810Z TO 260912Z JUN IN AREA BOUND BY
21-16.00N 122-22.00W, 18-25.00N 118-33.00W,
05-04.00S 136-09.00W, 02-22.00S 139-54.00W.
B. 271530Z TO 271645Z JUN IN AREA BOUND BY
49-12.00N 132-49.00W, 47-00.00N 134-15.00W,
50-41.00N 170-48.00W, 52-03.00N 170-59.00W,
53-10.00N 166-40.00W.
2. CANCEL THIS MSG 271745Z JUN 24.//
210933Z JUN 24
NAVAREA XII 450/24(GEN).
EASTERN PACIFIC OCEAN.
ALASKA.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS:
A. 260810Z TO 260912Z JUN IN AREA BOUND BY
21-16.00N 122-22.00W, 18-25.00N 118-33.00W,
05-04.00S 136-09.00W, 02-22.00S 139-54.00W.
B. 271530Z TO 271645Z JUN IN AREA BOUND BY
49-12.00N 132-49.00W, 47-00.00N 134-15.00W,
50-41.00N 170-48.00W, 52-03.00N 170-59.00W,
53-10.00N 166-40.00W.
2. CANCEL THIS MSG 271745Z JUN 24.//
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#624
by
CessnaDriver
on 21 Jun, 2024 20:17
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Are there any entry ground tracks? I am in San Diego county and curious if there will anything possibly visable.
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#625
by
Targeteer
on 21 Jun, 2024 21:47
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https://starlinerupdates.com/recent-starliner-docked-activities/
Recent Starliner Docked Activities
June 20, 2024
Starliner has completed 77 of the original 87 flight-test objectives, with the remaining 10 to occur between undocking and landing.
Crew Flight Test (CFT) astronauts Butch Wilmore and Suni Williams are testing more capabilities of the Starliner spacecraft and contributing to International Space Station operations. The entire CFT team is taking advantage of the additional days docked to learn as much as possible about Starliner to inform the ongoing certification process.
“Starliner is performing very well and we are getting exactly what we wanted out of this flight test by learning things you can only learn in flight,” said Mark Nappi, Starliner program manager, Boeing Commercial Crew. “The crew has been incredibly supportive of this learning on orbit, working with the ground teams, to improve and sharpen the experience for future crews.”
On Saturday, June 15, a hot fire test was performed on Starliner’s reaction control system (RCS) thrusters in the service module propulsion system. Wilmore and Williams sat in the cockpit during the tests so teams could hear their feedback on the sounds and feel of the thrusters firing. At the conclusion of the hot fire testing, the helium manifolds were isolated and the leak rates in each manifold decreased.
Other Starliner tasks included cabin sound checks, Communications Head Protection Assembly (CHPA) adjustments, and filming of on-orbit hatch operations for future crews to study. While the spacecraft was powered up, data was transferred from on-board recorders to support engineering assessments and software was uploaded with upcoming landing parameters.
Sunday, June 16, Boeing and NASA participated in a mission dress rehearsal at White Sands Space Harbor in New Mexico ahead of Starliner’s return. The combined Landing and Recovery Team (LRT) simulated convoy operations and recovery of the crew and Starliner.
Wilmore and Williams helped the Expedition 71 crew with ISS tasks, such as research and maintaining electronic, life support, and orbital plumbing systems.
Williams transferred wastewater between station modules, replaced a video camera in the Columbus laboratory module, moved to the Kibo lab and watered the Advanced Plant Habitat to prepare for upcoming science operations, and packed trash in a cargo return vehicle.
Wilmore swapped out thermal gear that protects electronics hardware on station and also worked in the Harmony module’s maintenance work area setting up hardware and researching liquid flows to improve the health care and food industries. The Gaucho Lung study he supported is exploring ways to optimize drug delivery for respiratory conditions, treat infants with respiratory distress syndrome, and prevent contamination of tubes with intermittent flows of liquids.
On Thursday, June 20, the crew took inventory of cargo stowed in Starliner for weight and center of gravity data analysis. Wilmore also made an adjustment to his commander seat in Starliner to account for an elongated spine from being on orbit, another key capability tested for future long-duration flights.
For more Starliner highlights, follow @BoeingSpace on X, starlinerupdates.com and the CFT mission website.
When Sunny and Butch went into Starliner this morning for more testing, the comms were moved to SG-4 so no discussions were broadcast on the Youtube feed. Early in the mission ISS related comms were moved to SG-3/4. A cynic might say Boeing/NASA don't want any more Starliner issues publicized...
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#626
by
Vettedrmr
on 21 Jun, 2024 22:08
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I've got a question that hasn't been discussed much: What's going on with the flash evaporator/sublimator? I know that ISS is replenishing the water supply (because AIUI ISS generates more water than they can use), but what's going on there? Is it used for thruster cooling? Environmental system? What's going on there?
TIA, and have a good one,
Mike
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#627
by
Ken the Bin
on 21 Jun, 2024 23:05
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The two NGA Space Debris notices (the same notice for two different Navigational Areas) that came out earlier today have been canceled TBD. Another delay??
212121Z JUN 24
HYDROPAC 2160/24(GEN).
EASTERN PACIFIC OCEAN.
ALASKA.
CANCEL HYDROPAC 2146/24 AND THIS MSG,
OPERATIONS POSTPONED.
212121Z JUN 24
NAVAREA XII 453/24(GEN).
EASTERN PACIFIC OCEAN.
ALASKA.
CANCEL NAVAREA XII 450/24 AND THIS MSG,
OPERATIONS POSTPONED.
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#628
by
SoftwareDude
on 22 Jun, 2024 00:24
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Starliner's return was postponed again, and no new date was given.
https://blogs.nasa.gov/boeing-crew-flight-test/2024/06/21/nasa-boeing-adjust-timeline-for-starliner-return/NASA, Boeing Adjust Timeline for Starliner ReturnNASA and Boeing leadership are adjusting the return to Earth of the Starliner Crew Flight Test spacecraft with agency astronauts Butch Wilmore and Suni Williams from the International Space Station. The move off Wednesday, June 26, deconflicts Starliner’s undocking and landing from a series of planned International Space Station spacewalks while allowing mission teams time to review propulsion system data. Listen to a full replay of the June 18 media briefing where NASA and Boeing leadership discussed the ongoing efforts.
“We are taking our time and following our standard mission management team process,” said Steve Stich, manager of NASA’s Commercial Crew Program. “We are letting the data drive our decision making relative to managing the small helium system leaks and thruster performance we observed during rendezvous and docking. Additionally, given the duration of the mission, it is appropriate for us to complete an agency-level review, similar to what was done ahead of the NASA’s SpaceX Demo-2 return after two months on orbit, to document the agency’s formal acceptance on proceeding as planned.”
A media telecon with mission leadership will follow the readiness review’s conclusion, and the agency will share those details as they are solidified. Boeing’s Starliner spacecraft remains cleared for return in case of an emergency on the space station that required the crew to leave orbit and come back to Earth.
Mission managers are evaluating future return opportunities following the station’s two planned spacewalks on Monday, June 24, and Tuesday, July 2.
“Starliner is performing well in orbit while docked to the space station,” said Stich. “We are strategically using the extra time to clear a path for some critical station activities while completing readiness for Butch and Suni’s return on Starliner and gaining valuable insight into the system upgrades we will want to make for post-certification missions.”
Wilmore and Williams remain integrated with the Expedition 71 crew, assisting with station operations as needed and completing add-on in-flight objectives for NASA certification of Starliner.
“The crew’s feedback has been overwhelmingly positive, and they know that every bit of learning we do on the Crew Flight Test will improve and sharpen our experience for future crews,” said Mark Nappi, vice president and program manager, Boeing’s Starliner Program.
The crew is not pressed for time to leave the station since there are plenty of supplies in orbit, and the station’s schedule is relatively open through mid-August.
[zubenelgenubi: edit]
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#629
by
Robert_the_Doll
on 22 Jun, 2024 00:41
-
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#630
by
StraumliBlight
on 22 Jun, 2024 00:50
-
Spacewalks cited as reason for delay.
Curious why they added this statement at the end though.
The crew is not pressed for time to leave the station since there are plenty of supplies in orbit, and the station’s schedule is relatively open through mid-August.
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#631
by
Vettedrmr
on 22 Jun, 2024 00:53
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Spacewalks cited as reason for delay.
https://x.com/Commercial_Crew/status/1804305775361135045
Leaders from @NASA and @BoeingSpace are adjusting the June 26 return to Earth of the Crew Flight Test mission with @NASA_Astronauts Butch Wilmore and Suni Williams from @Space_Station.
This adjustment deconflicts from a series of spacewalks while allowing mission teams time to review propulsion system data and assess any additional testing opportunities.
Mission managers are evaluating future return opportunities following the station’s two planned spacewalks on June 24 and July 2.
More: https://blogs.nasa.gov/boeing-crew-flight-test/2024/06/21/nasa-boeing-adjust-timeline-for-starliner-return/
Sounds much more like a classic management "you're the long pole, I'M not the long pole." ISTM that they're really working hard to evaluate the hard choices with CFT-1, and getting the spacewalks in while taking the time needed to come to whatever decision they come up with.
I'd much rather NASA take the time to figure out the right thing to do than push to a published date.
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#632
by
DanClemmensen
on 22 Jun, 2024 01:17
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Spacewalks cited as reason for delay.
Curious why they added this statement at the end though.
The crew is not pressed for time to leave the station since there are plenty of supplies in orbit, and the station’s schedule is relatively open through mid-August.
Starliner is occupying one of the two IDSS ports. The other one is occupied by Crew-8. No Cargo Dragons are scheduled until September, but Crew-9 will dock in mid-August. NASA prefers to have both the Departing Crew Dragon and the Arriving Crew Dragon docked at the same time. If Starliner has not departed by then, they cannot do a proper handover.
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#633
by
russianhalo117
on 22 Jun, 2024 01:43
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Spacewalks cited as reason for delay.
Curious why they added this statement at the end though.
The crew is not pressed for time to leave the station since there are plenty of supplies in orbit, and the station’s schedule is relatively open through mid-August.
Starliner is occupying one of the two IDSS ports. The other one is occupied by Crew-8. No Cargo Dragons are scheduled until September, but Crew-9 will dock in mid-August. NASA prefers to have both the Departing Crew Dragon and the Arriving Crew Dragon docked at the same time. If Starliner has not departed by then, they cannot do a proper handover.
Crew 8 can be extended until the current circumstances with Starliner can be addressed or Crew 9 can be launched just prior or after Crew 8 undock and the remaining ISS crew can conduct the handover. The Starliner crew can also perform the handover as well as ground personnel with ISS crew assistance. In other words there are many ways to handle this situation as a direct handover through preferable is not required.
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#634
by
DanClemmensen
on 22 Jun, 2024 02:19
-
Spacewalks cited as reason for delay.
Curious why they added this statement at the end though.
The crew is not pressed for time to leave the station since there are plenty of supplies in orbit, and the station’s schedule is relatively open through mid-August.
Starliner is occupying one of the two IDSS ports. The other one is occupied by Crew-8. No Cargo Dragons are scheduled until September, but Crew-9 will dock in mid-August. NASA prefers to have both the Departing Crew Dragon and the Arriving Crew Dragon docked at the same time. If Starliner has not departed by then, they cannot do a proper handover.
Crew 8 can be extended until the current circumstances with Starliner can be addressed or Crew 9 can be launched just prior or after Crew 8 undock and the remaining ISS crew can conduct the handover. The Starliner crew can also perform the handover as well as ground personnel with ISS crew assistance. In other words there are many ways to handle this situation as a direct handover through preferable is not required.
Sure. They did an "indirect handover" from Crew-2 to Crew-3. Crew-3 launch was delayed several times, and Crew-2 ran out of (conservative) max time on station, so Crew-2 undocked before Crew-3 docked. In theory, crew-8 can hang out until end of August, but that's pushing its limit. This is why I said "NASA prefers", not "NASA requires".
In the
unlikely event that NASA decides to bring Suni and Butch back on Crew-9, They will need to undock the uncrewed Starliner before they dock Crew-9. As you say, this is not an "indirect handover" at all.
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#635
by
dglow
on 22 Jun, 2024 03:58
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Spacewalks cited as reason for delay.
https://x.com/Commercial_Crew/status/1804305775361135045
Leaders from @NASA and @BoeingSpace are adjusting the June 26 return to Earth of the Crew Flight Test mission with @NASA_Astronauts Butch Wilmore and Suni Williams from @Space_Station.
This adjustment deconflicts from a series of spacewalks while allowing mission teams time to review propulsion system data and assess any additional testing opportunities.
Mission managers are evaluating future return opportunities following the station’s two planned spacewalks on June 24 and July 2.
More: https://blogs.nasa.gov/boeing-crew-flight-test/2024/06/21/nasa-boeing-adjust-timeline-for-starliner-return/
No. The blog entry linked above is more clear than the X post. Per this and other info, the spacewalks may be pacing items but are not the cause.
Mission managers are evaluating future return opportunities following the station’s two planned spacewalks on Monday, June 24, and Tuesday, July 2.
“Starliner is performing well in orbit while docked to the space station,” said Stich. “We are strategically using the extra time to clear a path for some critical station activities while completing readiness for Butch and Suni’s return on Starliner and gaining valuable insight into the system upgrades we will want to make for post-certification missions.”
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#636
by
FutureSpaceTourist
on 22 Jun, 2024 05:15
-
Starliner's return was postponed again, and no new date was given.
https://blogs.nasa.gov/boeing-crew-flight-test/2024/06/21/nasa-boeing-adjust-timeline-for-starliner-return/
Here’s the whole blog. Note the mention of ‘system upgrades we will want to make for post-certification missions’.
NASA, Boeing Adjust Timeline for Starliner Return
NASA and Boeing leadership are adjusting the return to Earth of the Starliner Crew Flight Test spacecraft with agency astronauts Butch Wilmore and Suni Williams from the International Space Station. The move off Wednesday, June 26, deconflicts Starliner’s undocking and landing from a series of planned International Space Station spacewalks while allowing mission teams time to review propulsion system data. Listen to a full replay of the June 18 media briefing where NASA and Boeing leadership discussed the ongoing efforts.
“We are taking our time and following our standard mission management team process,” said Steve Stich, manager of NASA’s Commercial Crew Program. “We are letting the data drive our decision making relative to managing the small helium system leaks and thruster performance we observed during rendezvous and docking. Additionally, given the duration of the mission, it is appropriate for us to complete an agency-level review, similar to what was done ahead of the NASA’s SpaceX Demo-2 return after two months on orbit, to document the agency’s formal acceptance on proceeding as planned.”
A media telecon with mission leadership will follow the readiness review’s conclusion, and the agency will share those details as they are solidified. Boeing’s Starliner spacecraft remains cleared for return in case of an emergency on the space station that required the crew to leave orbit and come back to Earth.
Mission managers are evaluating future return opportunities following the station’s two planned spacewalks on Monday, June 24, and Tuesday, July 2.
“Starliner is performing well in orbit while docked to the space station,” said Stich. “We are strategically using the extra time to clear a path for some critical station activities while completing readiness for Butch and Suni’s return on Starliner and gaining valuable insight into the system upgrades we will want to make for post-certification missions.”
Wilmore and Williams remain integrated with the Expedition 71 crew, assisting with station operations as needed and completing add-on in-flight objectives for NASA certification of Starliner.
“The crew’s feedback has been overwhelmingly positive, and they know that every bit of learning we do on the Crew Flight Test will improve and sharpen our experience for future crews,” said Mark Nappi, vice president and program manager, Boeing’s Starliner Program.
The crew is not pressed for time to leave the station since there are plenty of supplies in orbit, and the station’s schedule is relatively open through mid-August.
Get the latest mission updates by following the commercial crew blog, @commercial_crew on X, and commercial crew on Facebook.
Author Danielle Sempsrott
Posted on June 21, 2024
Categories Boeing, Boeing Crew Flight Test, Commercial Crew, Commercial Crew Program, Commercial Spaceflight, Crew Flight Test, Expedition 71, International Space Station, Kennedy Space Center, NASA, NASA AstronautsTags Atlas V, Butch Wilmore, CCP, CFT, Starliner, Suni Williams, ULA, United Launch Alliance
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#637
by
FutureSpaceTourist
on 22 Jun, 2024 06:06
-
https://arstechnica.com/space/2024/06/nasa-indefinitely-delays-return-of-starliner-to-review-propulsion-data/NASA indefinitely delays return of Starliner to review propulsion data
“We are letting the data drive our decision."
by Eric Berger - Jun 22, 2024 1:27am GMT
In an update released late Friday evening, NASA said it was "adjusting" the date of the Starliner spacecraft's return to Earth from June 26 to an unspecified time in July.
The announcement followed two days of long meetings to review the readiness of the spacecraft
Also from the article:
However, this vehicle is only rated for a 45-day stay at the space station, and that clock began ticking on June 6.
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#638
by
OneSpeed
on 22 Jun, 2024 12:26
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Also these two NGA Space Debris notices from today (the same notice for two different Navigational Areas).
Possibly obsolete map from the NGA notices.
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#639
by
DanClemmensen
on 22 Jun, 2024 14:24
-
https://arstechnica.com/space/2024/06/nasa-indefinitely-delays-return-of-starliner-to-review-propulsion-data/
However, this vehicle is only rated for a 45-day stay at the space station, and that clock began ticking on June 6.
Do we know why CFT-1 is limited to 45 days? Starliner in general is designed for a 210-day max stay at ISS, and in quiescent docked mode I thought it used at most minimal consumables. Maybe the 45-day limit is is the extra demand of the two astronauts on the ISS resources?
The issue here is using Crew-9 as the alternative return for Suni and Butch. Crew-9 arrives at ISS in mid-August, but the 45-day Starliner limit runs out about 21 July. If that's a soft limit (e.g., availability of clean underwear) it still works. If it's a hard limit based on something the Starliner needs that ISS cannot supply, then there is an issue. If Crew-9 launches with only two crew, it will have some spare cargo capacity to back-fill any ISS supplies that were consumed by Suni and Butch during the one-month unplanned interim.