Author Topic: LIVE: SpaceX CRS-10 Dragon - RNDZ, Berthing, ISS Ops - UPDATES (Read 57959 times)

Chris Bergin · « **on:** 02/20/2017 09:36 pm »

UPDATE ONLY CRS-10 thread for Dragon's ISS events.

ARTICLE:
https://www.nasaspaceflight.com/2017/02/flawless-spx-10-dragon-rendezvous-berthing-station/ - by Chris Gebhardt.

Berthing events begin around 4:30am Eastern on Feb 22.

NSF Threads for CRS-10 : Discussion / Launch Updates / L2 January Mission Flows 2017 / L2 February Mission Flows 2017

NSF Articles for CRS-10:
Dragon pulls rank as LC-39A readiness realigns SpaceX manifest
Fire to return to LC-39A with Falcon 9 static fire ahead of CRS-10 launch
SpaceX LAUNCH MISSION ARTICLE

L2 Coverage

NSF Articles for CRS missions : https://www.nasaspaceflight.com/?s=CRS

Successful Launch on Feb. 19, 2017 at 09:39 EST/14:39 UTC. Successful first stage landing at LZ-1. This flight used a new booster, serial number 1031.

External cargo: SAGE-III-ISS (Instrument Platform and Nadir Viewing Platform) and STP-H5

Other SpaceX resources on NASASpaceflight:
SpaceX News Articles (Recent) / SpaceX News Articles from 2006 (Including numerous exclusive Elon interviews)
SpaceX Dragon Articles / SpaceX Missions Section (with Launch Manifest and info on past and future missions)
L2 SpaceX Section

Targeteer · « **Reply #1 on:** 02/20/2017 10:10 pm »

At least one maneuver has occurred and it's not ID'd as Dragon...

OBJECT A   2017-009A      90.15min   51.64deg   360km   204km
42054   DRAGON CRS-10 deb 90.05   51.63   350   203
42055   DRAGON CRS-10 deb 90.03   51.69   355   197

ChrisGebhardt · « **Reply #2 on:** 02/21/2017 03:38 pm »

The detailed rendezvous timeline for 22 February.

The man in the can · « **Reply #3 on:** 02/21/2017 07:38 pm »

Object A ("Dragon") circularized its orbit.
Now 358.16km - 365.04km
Closing in with the station

The man in the can · « **Reply #4 on:** 02/22/2017 12:27 am »

The Dragon changed orbit again!
now 389.15km - 398.02 inc 51.64deg
174 km behind the station.

The station orbit is 400.11km - 408.82km inc 51.64deg

psloss · « **Reply #5 on:** 02/22/2017 01:02 am »

Quote from: The man in the can on 02/22/2017 12:27 am

The Dragon changed orbit again!
now 389.15km - 398.02 inc 51.64deg
174 km behind the station.

The station orbit is 400.11km - 408.82km inc 51.64deg

The HA2 and CE2 burns were on the timeline that ChrisG posted for around this time. (Upcoming shortly on the timeline, but certainly possible there were changes.)

HA2_Burn (17 sec, 2.2 m/s) 053/02:12:29 GMT
CE2_Burn (25 sec, 2.2 m/s) 053/02:58:45 GMT

Chris Bergin · « **Reply #6 on:** 02/22/2017 04:42 am »

Targeteer · « **Reply #7 on:** 02/22/2017 06:35 am »

Per the morning DPC Dragon is 8km behind and 5km below the ISS. A burn happened early and the crew was told to expect events to occur about 15 minutes early compared to the expected timeline. The crew is planning to ingress Dragon today.

Chris Bergin · « **Reply #8 on:** 02/22/2017 07:03 am »

https://www.nasaspaceflight.com/2017/02/flawless-spx-10-dragon-rendezvous-berthing-station/ - by Chris Gebhardt.

Jarnis · « **Reply #9 on:** 02/22/2017 07:27 am »

"Dragon aborted approach, no capture today"

Was just stated on the loop on Ustream ISS feed.

Targeteer · « **Reply #10 on:** 02/22/2017 07:27 am »

Dragon approach aborted. No capture today.

Jarnis · « **Reply #11 on:** 02/22/2017 07:30 am »

"Dragon is on 24h safe trajectory, *some* filter unconverged"

Didn't catch the acronym...

Jarnis · « **Reply #12 on:** 02/22/2017 07:40 am »

Update on the NASA TV coming up now.

"Approx 2:24AM, 15min ago report from SpaceX mission director. Dragon aborted the approach, because of an apparent problem on the filter on the relative GPS hardware that tells the Dragon computers what is the relative position to the ISS"

"Aborted at 1200m below station, now on racetrack pattern around the station, new attempt Thursday morning"

(hopefully got the gist of it listening to the NASA TV report... feel free to correct)

Chris Bergin · « **Reply #13 on:** 02/22/2017 08:05 am »

ISS State Vector error in the Dragon flight computer. Relative GPS did not process as planned. Dragon decided to abort to the racetrack.

vaporcobra · « **Reply #14 on:** 02/22/2017 08:08 am »

Based on what was just said, it sounds like a prime suspect in the abort and unconverged filter is an incorrect value having been processed by Dragon's computers, that value regarding the vector and position of the ISS. So, plausibly a software issue (possibly human error-related, given Dragon's triple redundancy against cosmic ray bit-flipping).

Update: Second attempt Thursday morning still a go (anticipated grapple at 6am EST, coverage beginning around 4am EST, or 11am and 1pm UTC). Preemptive early housekeeping also a go

Update 2.0: Dragon installation at the cargo hatch expected at 7am EST (2pm UTC) assuming a successful approach.

Chris Bergin · « **Reply #15 on:** 02/22/2017 08:47 am »

Mr. Renfrew has turned up to see what's going on.

FutureSpaceTourist · « **Reply #16 on:** 02/22/2017 09:40 am »

Quote

Dragon is in good health and will make another rendezvous attempt with the @Space_Station Thursday morning.

https://twitter.com/spacex/status/834346217853194243

FutureSpaceTourist · « **Reply #17 on:** 02/22/2017 09:43 am »

Quote

SpaceX Dragon Rendezvous and Docking Waved Off for Today

Posted on February 22, 2017 at 4:38 am by mcsumner.

The SpaceX Dragon cargo spacecraft waved off its planned rendezvous with the International Space Station at 3:25 a.m. EST. Onboard computers triggered the abort after recognizing an incorrect value in data about the location of the space station. Per the re-rendezvous plan built into every mission, the spacecraft automatically reset for another rendezvous and docking attempt in 24 hours.

The spacecraft is in excellent shape with no issues, and the crew aboard the space station is safe. The next rendezvous attempt is targeted for Thursday morning. NASA TV coverage will begin at 4 a.m. with grapple expected around 6 a.m. Installation coverage will begin at 8 a.m. Watch live on NASA TV and online at: http://www.nasa.gov/live.

https://blogs.nasa.gov/spacestation/2017/02/22/spacex-dragon-rendezvous-and-docking-waved-off-for-today/

Chris Bergin · « **Reply #18 on:** 02/23/2017 07:55 am »

That dead pixel's caught me out before....

Anyway:

Chris Bergin · « **Reply #19 on:** 02/23/2017 08:01 am »