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#240
by
centaurinasa
on 09 Nov, 2022 11:53
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in RTL "Ready To Latch" position.
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#241
by
centaurinasa
on 09 Nov, 2022 11:53
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1st stage capture: 4 latches closed "soft capture"
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#242
by
centaurinasa
on 09 Nov, 2022 11:54
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SSRMS in "limp mode" (no constraint on Cygnus by SSRMS)
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#243
by
centaurinasa
on 09 Nov, 2022 11:55
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GO for 2nd stage capture.
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#244
by
centaurinasa
on 09 Nov, 2022 11:56
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#245
by
FutureSpaceTourist
on 09 Nov, 2022 12:01
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https://twitter.com/nasa_johnson/status/1590328549353091073After launching on Nov. 7, #Cygnus was captured this morning at 5:20am ET by @AstroDuke and @astro_josh. Controls of the @Space_station’s robotic arm were then transferred to this team in Mission Control Houston, who are installing the spacecraft to the Unity module.
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#246
by
centaurinasa
on 09 Nov, 2022 12:05
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Installation complete at 13.03 UTC.
Welcome "SS Sally Ride" !
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#247
by
centaurinasa
on 09 Nov, 2022 12:09
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Next, Vestibule leak check performed by Francisco Rubio.
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#248
by
centaurinasa
on 09 Nov, 2022 12:15
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ISS configuration updated.
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#249
by
centaurinasa
on 09 Nov, 2022 12:17
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Ground Controllers Install Cygnus on Station
Mark Garcia
Posted on November 9, 2022
Northrop Grumman’s Cygnus spacecraft installation on the International Space Station is now complete. Cygnus, carrying over 8,200 pounds of cargo and science experiments, launched atop an Antares rocket at 5:32 a.m. EST Monday, Nov. 7 from NASA’s Wallops Flight Facility in Virginia. At 5:20 a.m., NASA astronaut Nicole Mann, along with NASA astronaut Josh Cassada as backup, captured Cygnus using the Canadarm2 robotic arm.
Cygnus also is delivering a new mounting bracket that astronauts will attach to the starboard side of the station’s truss assembly during a spacewalk planned for Nov. 15. The mounting bracket will enable the installation of one of the next pair of new solar arrays.
Cygnus will remain at the space station until late January before it departs for a destructive re-entry into Earth’s atmosphere.
https://blogs.nasa.gov/spacestation/2022/11/09/ground-controllers-install-cygnus-on-station/
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#250
by
woods170
on 09 Nov, 2022 13:28
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Not the same failure mode as the Lucy Megaflex arrays: that was a tangled deployment lanyard partway through gore deployment, but here the Ultraflex array has swung out, but not rotated to final attitude, and the gores remain fully stowed (i.e. issue occurred before lanyard drive would have even started).
Your conclusion is premature. The only thing that has been determined is that there was negligible risk of sudden deploy of the array during approach, capture and berthing. Everything else, including the cause of the failure, is still being looked into.
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#251
by
edzieba
on 09 Nov, 2022 14:29
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Not the same failure mode as the Lucy Megaflex arrays: that was a tangled deployment lanyard partway through gore deployment, but here the Ultraflex array has swung out, but not rotated to final attitude, and the gores remain fully stowed (i.e. issue occurred before lanyard drive would have even started).
Your conclusion is premature. The only thing that has been determined is that there was negligent risk of sudden deploy of the array during approach, capture and berthing. Everything else, including the cause of the failure, is still being looked into.
We know from the Lucy failure that unfurling of the gores partially completed before the deployment motor stalled (and we know from subsequent analyses that the stalling was due to the deployment tether slipping the hub and wrapping the shaft). We also know from the photos of Cygnus upthread that the gores have not started deployment at all, and that the array is not in the correct angle to begin unfurling: look at the deployed array, the two clasped plates at its 'base' perpendicular to the solar cells are the same orientation that the undeployed array would need to move to before it can begin unfurling the gores (as the orientation motion is perpendicular to those hard plates).
The failure that occurred with Lucy's array deployment was in a stage of the deployment sequence that the Cygnus array has not yet reached.
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#252
by
FutureSpaceTourist
on 09 Nov, 2022 14:46
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#253
by
punder
on 09 Nov, 2022 17:41
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Strange that no one seems interested in the wild attitude change we all saw in the launch animation--something on the order of 140 degrees pointing change. Nothing to see here, move along?
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#254
by
Sesquipedalian
on 09 Nov, 2022 17:41
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Your conclusion is premature. The only thing that has been determined is that there was negligent risk of sudden deploy of the array during approach, capture and berthing. Everything else, including the cause of the failure, is still being looked into.
You mean, a negligible risk? A negligent risk rather changes the meaning...
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#255
by
eeergo
on 09 Nov, 2022 17:47
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Strange that no one seems interested in the wild attitude change we all saw in the launch animation--something on the order of 140 degrees pointing change. Nothing to see here, move along?
We discussed it at length upthread. I also noticed a large spike in the X velocity chart (clearly a glitch, as it was going to orbital velocities briefly!) which seemed to coincide with the maneuver. We just don't have more information for now to do speculate further.
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#256
by
FutureSpaceTourist
on 09 Nov, 2022 21:29
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https://twitter.com/stephenclark1/status/1590455363840933889 In a press release, Northrop Grumman says the Cygnus spacecraft’s solar array deployment failure on NG-18 stemmed from a problem during a stage separation event on launch.
An acoustic blanket from the Antares rocket lodged in one of the Cygnus solar array mechanisms.
"During a rocket stage separation event, debris from an Antares acoustic blanket became lodged in one of the Cygnus solar array mechanisms, preventing it from opening," said Cyrus Dhalla, vice president and general manager, Tactical Space Systems, Northrop Grumman. "Successful berthing was achieved thanks to Cygnus's robust design and the resilience and ingenuity of the NASA and Northrop Grumman teams."
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#257
by
FutureSpaceTourist
on 09 Nov, 2022 21:32
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#258
by
FutureSpaceTourist
on 09 Nov, 2022 22:02
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#259
by
AS_501
on 09 Nov, 2022 22:17
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Is Cygnus powered down during it's stay at the ISS, with power drawn from the station?
