Author Topic: SpaceX F9 / Dragon 2 : CRS2 SpX-21 - Mission Updates : Dec - Jan (2020/21) (Read 188614 times)

FutureSpaceTourist · « **Reply #400 on:** 01/11/2021 01:55 pm »

https://twitter.com/nasaspaceflight/status/1348644408720318468

Quote

DELAYED. No undocking for Dragon CRS-21 today due to splashdown weather! The call came two minutes before undocking commands.

edkyle99 · « **Reply #401 on:** 01/11/2021 03:59 pm »

Quote from: Svetoslav on 01/10/2021 09:40 am

I apologize for this noob question as I am almost certain this has been answered before, but somehow I screwed myself with the search engine.

Can someone clarify why Dragon 1 wasn't able to return to East Coast for fast science?

"Dragon 1" jettisoned its trunk after deorbit burn, so the trunk came down with the capsule, more or less. That dictated a West Coast splashdown. "Dragon 2" jettisons its trunk before the deorbit burn, so no deorbiting trunk to worry about - at least during spacecraft reentry.

- Ed Kyle

Targeteer · « **Reply #402 on:** 01/11/2021 06:58 pm »

Center of gravity limits are apparently tight. Huntsville and Houston stressed that multiple times during the late stowage. The fabric transfer bags, CTBs (contingency transfer bags?) not only had to be placed in the correct location, but the correct orientation. They have a zipper on 3 edges and hinge on the other end on one side. All CTBs had to be placed with the hinged side facing a certain direction (dragon starboard) and the end the the zipper dragon forward. Hard to believe the weight of a zipper on one end or lack of one on an edge (making that side lighter) could be that critical.

Jansen · « **Reply #403 on:** 01/11/2021 07:32 pm »

Quote from: Targeteer on 01/11/2021 06:58 pm

Hard to believe the weight of a zipper on one end or lack of one on an edge (making that side lighter) could be that critical.

Possibly the zipper is a visual indicator of where the weight is distributed, since the bags are opaque.

Ken the Bin · « **Reply #404 on:** 01/11/2021 07:34 pm »

Updated NGA notice removing the splashdown hazard warning associated with today's postponed departure. All four areas are currently in play for the next attempt.

New:

Quote from: NGA

111836Z JAN 21
NAVAREA IV 35/21(11).
WESTERN NORTH ATLANTIC.
GULF OF MEXICO.
FLORIDA.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS
IN AREAS BOUND BY:
A. 140100Z TO 140130Z, ALTERNATE
150035Z TO 150105Z JAN
29-20-45N 080-13-48W, 28-50-56N 079-43-04W,
28-21-14N 080-13-48W, 28-50-56N 080-44-31W.
B. 140105Z TO 140135Z, ALTERNATE
150045Z TO 150115Z JAN
30-17-45N 080-35-59W, 29-47-56N 080-04-58W,
29-18-14N 080-35-59W, 29-47-56N 081-07-01W.
C. 140110Z TO 140140Z, ALTERNATE
150045Z TO 150115Z JAN
31-24-45N 080-15-00W, 30-54-56N 079-43-36W,
30-25-14N 080-15-00W, 30-54-56N 080-46-23W.
D. 140110Z TO 140140Z, ALTERNATE
150050Z TO 150120Z JAN
28-59-45N 083-45-00W, 28-29-56N 083-14-20W,
28-00-14N 083-45-00W, 28-29-56N 084-15-39W.
2. CANCEL NAVAREA IV 32/21.
3. CANCEL THIS MSG 150220Z JAN 21.

Cancelled:

Quote from: NGA

101741Z JAN 21
NAVAREA IV 32/21(11).
WESTERN NORTH ATLANTIC.
GULF OF MEXICO.
FLORIDA.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS
IN AREAS BOUND BY:
A. ALTERNATE 140100Z TO 140130Z AND
150035Z TO 150105Z JAN
29-20-45N 080-13-48W, 28-50-56N 079-43-04W,
28-21-14N 080-13-48W, 28-50-56N 080-44-31W.
B. 120155Z TO 120225Z JAN, ALTERNATE
140105Z TO 140135Z AND
150045Z TO 150115Z JAN
30-17-45N 080-35-59W, 29-47-56N 080-04-58W,
29-18-14N 080-35-59W, 29-47-56N 081-07-01W.
C. ALTERNATE 140110Z TO 140140Z AND
150045Z TO 150115Z JAN
31-24-45N 080-15-00W, 30-54-56N 079-43-36W,
30-25-14N 080-15-00W, 30-54-56N 080-46-23W.
D. ALTERNATE 140110Z TO 140140Z AND
150050Z TO 150120Z JAN
28-59-45N 083-45-00W, 28-29-56N 083-14-20W,
28-00-14N 083-45-00W, 28-29-56N 084-15-39W.
2. CANCEL NAVAREA IV 26/21.
3. CANCEL THIS MSG 150220Z JAN 21.

Jansen · « **Reply #405 on:** 01/11/2021 07:43 pm »

https://www.nasaspaceflight.com/2021/01/dragon-departs-iss-with-science/

SpaceX calls-off CRS-21 Dragon return due to recovery weather off Florida

Jansen · « **Reply #406 on:** 01/12/2021 03:49 am »

NASA TV

Jan. 12, Tuesday
8 a.m. -- Coverage of the undocking of the SpaceX CRS-21 Cargo Dragon spacecraft from the International Space Station. (Undocking scheduled at appx. 8:40 a.m. EST) – Johnson Space Center (All Channels)

Sam Ho · « **Reply #407 on:** 01/12/2021 04:06 am »

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We and @SpaceX are targeting 8:40 a.m. EST on Tuesday, Jan. 12, for undocking from @Space_Station of an upgraded SpaceX Dragon spacecraft filled with more than 4,400 pounds of experiments and other cargo. Watch live beginning at 8 a.m. EST on https://nasa.gov/live.

https://twitter.com/NASA/status/1348856471509938177

Targeteer · « **Reply #408 on:** 01/12/2021 07:12 am »

CAPCOM updated the crew on results of the U-6 weather brief which predicts Tampa weather as go. Another brief will be at undock-3 hours... and they switched to a pink toned external feed...