Author Topic: SpaceX F9 / Dragon 2 : CRS2 SpX-21 - Mission Updates : Dec - Jan (2020/21) (Read 188611 times)

Ken the Bin · « **Reply #180 on:** 12/05/2020 08:07 pm »

New notices from the NGA.

Backup Day = Tuesday, December 8 at ~15:28 UTC.

New:

Quote from: NGA

051456Z DEC 20
NAVAREA IV 1176/20(11,26).
WESTERN NORTH ATLANTIC.
FLORIDA.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
061607Z TO 061653Z DEC, ALTERNATE
081518Z TO 081603Z DEC
IN AREAS BOUND BY:
A. 28-39-01N 080-37-42W, 29-02-00N 080-09-00W,
28-59-00N 080-05-00W, 28-38-00N 080-24-00W,
28-33-02N 080-33-55W.
B. 32-12-00N 076-43-00W, 32-55-00N 075-49-00W,
32-41-00N 075-36-00W, 31-57-00N 076-27-00W.
2. CANCEL NAVAREA IV 1163/20.
3. CANCEL THIS MSG 081703Z DEC 20.

Quote from: NGA

051513Z DEC 20
HYDROPAC 3601/20(61,74,75).
INDIAN OCEAN.
SOUTHEASTERN INDIAN OCEAN.
DNC 03, DNC 04.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS
061646Z TO 061727Z DEC, ALTERNATE
081557Z TO 081637Z DEC
IN AREA BOUND BY
20-47S 079-46E, 20-12S 081-13E,
25-34S 088-19E, 36-18S 101-47E,
47-20S 119-50E, 48-34S 119-08E,
48-10S 115-48E, 43-51S 104-04E,
37-44S 093-56E, 28-42S 084-39E,
24-10S 081-13E.
2. CANCEL HYDROPAC 3535/20.
3. CANCEL THIS MSG 081737Z DEC 20.

Canceled:

Quote from: NGA

300911Z NOV 20
NAVAREA IV 1163/20(11,26).
WESTERN NORTH ATLANTIC.
FLORIDA.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING
051629Z TO 051715Z DEC, ALTERNATE
061607Z TO 061653Z DEC
IN AREAS BOUND BY:
A. 28-39-01N 080-37-42W, 29-02-00N 080-09-00W,
28-59-00N 080-05-00W, 28-38-00N 080-24-00W,
28-33-02N 080-33-55W.
B. 32-12-00N 076-43-00W, 32-55-00N 075-49-00W,
32-41-00N 075-36-00W, 31-57-00N 076-27-00W.
2. CANCEL THIS MSG 061753Z DEC 20.

Quote from: NGA

300925Z NOV 20
HYDROPAC 3535/20(61,74,75).
INDIAN OCEAN.
SOUTHEASTERN INDIAN OCEAN.
DNC 03, DNC 04.
1. HAZARDOUS OPERATIONS, SPACE DEBRIS
051708Z TO 051749Z DEC, ALTERNATE
061646Z TO 061727Z DEC
IN AREA BOUND BY
20-47S 079-46E, 20-12S 081-13E,
25-34S 088-19E, 36-18S 101-47E,
47-20S 119-50E, 48-34S 119-08E,
48-10S 115-48E, 43-51S 104-04E,
37-44S 093-56E, 28-42S 084-39E,
24-10S 081-13E.
2. CANCEL THIS MSG 061827Z DEC 20.

Danderman · « **Reply #181 on:** 12/06/2020 07:28 am »

Quote from: Jansen on 12/01/2020 04:59 am

Well that seems pretty official

Bishop airlock 1090 kg

If total cargo is 3000 kg, why does the launch of a 22,000 kg capability Falcon 5 require a downrange recovery of the first stage? Unless the Cargo Dragon dry mass is well over 10,000 kg, there should be plenty of mass available for a RTLS recovery of the first stage.

hopalong · « **Reply #182 on:** 12/06/2020 07:44 am »

Quote from: Danderman on 12/06/2020 07:28 am

Quote from: Jansen on 12/01/2020 04:59 am
Well that seems pretty official

Bishop airlock 1090 kg

If total cargo is 3000 kg, why does the launch of a 22,000 kg capability Falcon 5 require a downrange recovery of the first stage? Unless the Cargo Dragon dry mass is well over 10,000 kg, there should be plenty of mass available for a RTLS recovery of the first stage.

The payload to the ISS orbit with RTLS is 10,860Kg, ASDS is 14,460Kg. - NASA's performance website.

Jansen · « **Reply #183 on:** 12/06/2020 12:15 pm »

https://spaceflightnow.com/2020/12/03/falcon-9-crs-21-mission-status-center/

Quote from: Spaceflight Now

As the countdown clocks tick down, the crew access arm at pad 39A has retracted from the Cargo Dragon capsule. For this cargo-only mission it was used to stow last-minute cargo aboard the spacecraft. For crew missions the arm remains partially extended in case it needs to be quickly moved into position for an evacuation of the astronauts, but for Cargo Dragon it has been tucked away against the side of the launch pad gantry.

Jansen · « **Reply #184 on:** 12/06/2020 12:23 pm »

Quote from: Danderman on 12/06/2020 07:28 am

Quote from: Jansen on 12/01/2020 04:59 am
Well that seems pretty official

Bishop airlock 1090 kg

If total cargo is 3000 kg, why does the launch of a 22,000 kg capability Falcon 5 require a downrange recovery of the first stage? Unless the Cargo Dragon dry mass is well over 10,000 kg, there should be plenty of mass available for a RTLS recovery of the first stage.

Cargo Dragon dry mass - 9,525 kg
Cargo mass - 2,973 kg
Total mass = 12,498 kg

Max mass to ISS with RTLS - 10,860 kg
Source: NASA Launch Services Program

FutureSpaceTourist · « **Reply #185 on:** 12/06/2020 12:26 pm »

https://twitter.com/astronaut_87/status/1335564165180698628

Quote

Let's try this again. Beautiful weather is now is 50° degrees. Let's launch this bad boy CRS-21 which is taking cargo and science experiments to the @Space_Station

Jansen · « **Reply #186 on:** 12/06/2020 12:59 pm »

Official SpaceX CRS-21 patch - Hi Res

Jansen · « **Reply #187 on:** 12/06/2020 01:09 pm »

NSF livestream coverage starts at 1010 ET (1510 GMT)

kdhilliard · « **Reply #188 on:** 12/06/2020 01:19 pm »

Quote from: Jansen on 12/06/2020 12:23 pm

...
Cargo Dragon dry mass - 9,525 kg
Cargo mass - 2,973 kg
Total mass = 12,498 kg

Max mass to ISS with RTLS - 10,860 kg
Source: NASA Launch Services Program

That "9,525 kg" comes from a statement prior to the 2015 Pad Abort Test that the stack (Prototype Crew Dragon and Trunk) was in excess of 21,000 pounds dry, plus around 3,500 pounds of propellant. I don't believe we know what the dry mass of an operational Cargo Dragon 2 is, nor how much propellant is onboard. That 9,525 kg might be the best we have, but it's unlikely to be accurate.

otter · « **Reply #189 on:** 12/06/2020 01:34 pm »

https://twitter.com/SpaceX/status/1335592227251212292

Quote

All systems are go for the updated cargo version of Dragon’s first flight to the @space_station. Weather is 60% favorable for launch, and the webcast will begin ~15 minutes ahead of liftoff → http://spacex.com/launches

Jansen · « **Reply #190 on:** 12/06/2020 01:41 pm »

NASA TV coverage of the Falcon 9 launch begins at 10:45 a.m. EST (1545 GMT)

Jansen · « **Reply #191 on:** 12/06/2020 01:43 pm »

https://spaceflightnow.com/2020/12/03/falcon-9-crs-21-mission-status-center/

Quote

The countdown clock at NASA's Kennedy Space Center is timed for liftoff of SpaceX's Falcon 9 rocket and Cargo Dragon spaceship at 11:17:08 a.m. EST (1617:08 GMT).

Rondaz · « **Reply #192 on:** 12/06/2020 01:58 pm »

SpaceX Falcon 9 and Cargo Dragon Stand Ready for CRS-21 Launch

Danielle Sempsrott Posted on December 6, 2020

A SpaceX Falcon 9 rocket and cargo Dragon spacecraft stand ready for liftoff at NASA Kennedy Space Center’s Launch Complex 39A in Florida for the company’s 21st Commercial Resupply Services (CRS-21) mission to the International Space Station. Launch is scheduled for today, Dec. 6, at 11:17 a.m. EST.

Meteorologists with the U.S. Air Force 45th Space Wing are predicting a 60% chance of favorable weather conditions for today’s launch, with the primary concern revolving around the thick cloud layer rule.

Some of the science that will be delivered on this mission includes 3D engineered heart tissues for a study that will examine how prolonged exposure to microgravity affects the human heart, meteorite samples and microbes to research the formation and biomining of asteroid material in space, and a study that will observe how brain organoids respond to microgravity. More information on these and additional payloads can be found at: https://www.nasa.gov/mission_pages/station/research/news/spacex-21-research-highlights..

https://blogs.nasa.gov/spacexcrs21/2020/12/06/spacex-falcon-9-and-cargo-dragon-stand-ready-for-crs-21-launch/