Author Topic: SpaceX Falcon 9 : Türksat 5B : CCSFS SLC-40 : 18/19 December 2021 (03:58 UTC)  (Read 43978 times)

Offline Steven Pietrobon

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Here's a PDF version of the online press kit.
« Last Edit: 12/19/2021 03:39 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline zubenelgenubi

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And thank you, Steven, for your live launch thread coverage!

Thanks to the NSF team, we have the SpaceNews award winning webcast coverage!
Support your local planetarium! (COVID-panic and forward: Now more than ever.)
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Offline Steven Pietrobon

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Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Elthiryel

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Post-launch photos from the SpaceX website.
GO for launch, GO for age of reflight


Online Rondaz

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Beautiful Saturday night launch of the #Falcon9 and #Turksat5B! Never gets old hearing that rumble and watching a rocket soar through the skies.

https://twitter.com/RDAnglePhoto/status/1472431173435641856

Online Rondaz

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F9/Turksat5B: For those of you scoring at home, this will be the 133rd Falcon 9 flight, the 30th of 31 planned for 2021, the 117th launched from Florida and the 77th from LC-40; it's the 3rd flight of 1st stage B1067; a successful recovery would be SpaceX's 99th, its 76th at sea..

https://twitter.com/cbs_spacenews/status/1472403788241723399

Online Rondaz

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Saturday night lights in Satellite Beach!

#SpaceX sent the  #Turksat5B satellite to space atop a #Falcon9 rocket from Cape Canaveral, FL at 10:58pm (ET).

https://twitter.com/Mike_Seeley/status/1472422776157974533

Online Rondaz

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Falcon 9 launches Turksat 5B from Cape Canaveral, Florida at 10:58 p.m. EST this evening

https://twitter.com/johnkrausphotos/status/1472420530942881796

Offline ugordan

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Online Rondaz

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Taking flight and roaring into the night. Falcon 9 successfully completed the Turksat-5B mission, the second of the day for SpaceX. This was the 30th Falcon 9 launch of 2021 and the third flight of B1067.

https://twitter.com/julia_bergeron/status/1472594191679213569

Online soltasto

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Here is also my version of the captured "press kit" with OCR.

Didn't manage to capture the pre launch version, so had to play with the html to bring it back to yesterdays version

Offline gongora

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https://twitter.com/TSKelso/status/1472737958050484227
Quote
CelesTrak has a TLE for 1 object from the launch (2021-126) of TURKSAT 5B atop a Falcon 9 rocket from Cape Canaveral on Dec 19 at 0358 UTC

198 x 68,931km, 27.12 degrees

Offline SPKirsch

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https://twitter.com/SpaceX/status/1472598324377051136
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Two Falcon 9 launches completed in ~15 hours

Offline SPKirsch

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https://twitter.com/JennyHPhoto/status/1472604434119241736
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At 10:58 PM ET last night, Türksat 5B lifts off into the night sky.

📷: Me for @SuperclusterHQ
 
@elonmusk
https://twitter.com/space_explored/status/1472746194820640768
Quote
Last night SpaceX launched Türksat 5B.

Check out these remote camera shots from Space Explored photographers @baserunner0723 and @derekiswise.
« Last Edit: 12/20/2021 02:25 am by SPKirsch »

Offline OneSpeed

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This was posted in the Starlink Group 4-4 thread, but here might be a better place to answer it.

Watching the landing on the broadcast, I noticed the displayed stage 1 velocity was still 263 kph when the altitude reach 0.0 km, and was still 183 kph when the altitude flipped from 0.0 km to -0.0 km, which presumable meant effectively 0 m. Since the video had cut out (as usual) I found this telemetry disconcerting. Fortunately, a few seconds later we got confirmation of a safe landing so clearly the broadcast telemetry was inaccurate (maybe just out of synch). I haven't watched every landing, but it always seemed like the displayed telemetry converged nicely to 0 velocity and altitude at the same time in the past. Was this landing unique or have we seen misleading telemetry in the broadcast previously? Any idea why the two data streams would be so far out of synch?

There have been many instances of interruptions to the webcast streams over the years, especially of the video for the ASDS landings. As you say, for Starlink 4-4 the speed, altitude and video were all heavily corrupted, perhaps by atmospheric conditions, and/or shock from the engine plume.

For Türksat 5B, the altitude changed from 0.1 to 0.0km at a speed of 167km/h, i.e. at an altitude of 100m, which is norminal, as John Insprucker would have it. The Türksat 5B S1 telemetry is as smooth as I have seen.

The Türksat 5A stream was quite brittle during the boost phase, as you can see from the comparison with Türksat 5B. The speed value froze several times, registering as large negative jerks in acceleration, followed by positive jerks as the buffered stream data caught up once transmission resumed.

As well, there was no telemetry broadcast for the Türksat 5A second stage GTO burn (SESU2), for reasons I'm not sure of. Happily, these issues were resolved for the Türksat 5B mission.
« Last Edit: 12/20/2021 03:57 am by OneSpeed »

Offline ZachS09

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https://twitter.com/TSKelso/status/1472737958050484227
Quote
CelesTrak has a TLE for 1 object from the launch (2021-126) of TURKSAT 5B atop a Falcon 9 rocket from Cape Canaveral on Dec 19 at 0358 UTC

198 x 68,931km, 27.12 degrees

With the listed orbital parameters, the delta-v to get to GEO is around 1,611 m/s.

https://gtocalc.github.io/
« Last Edit: 12/20/2021 04:35 am by ZachS09 »
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline crandles57

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A record 25th consecutive successful landing, if I am counting correctly. Also 49 of last 50 successful - 98% but perhaps that is a bit cherry-picking.

Online soltasto

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https://twitter.com/TSKelso/status/1472737958050484227
Quote
CelesTrak has a TLE for 1 object from the launch (2021-126) of TURKSAT 5B atop a Falcon 9 rocket from Cape Canaveral on Dec 19 at 0358 UTC

198 x 68,931km, 27.12 degrees

With the listed orbital parameters, the delta-v to get to GEO is around 1,611 m/s.

https://gtocalc.github.io/

I get a slightly lower delta v to GEO: 1603 m/s

Quote
Super-sync transfer.

First maneuver:
Perigee changed to 35786km
Inclination changed to 1.4563 degrees
Current Orbit: 35786.0000 km x 68931.0000 km x 1.4563 degrees;
Apogee Speed: 1949.2716 m/s; Perigee Speed: 3481.8429 m/s; delta v to this orbit: 1187.6282

Second maneuver:
Apogee changed to 35786km
Inclination changed to 0 degrees
Current Orbit: 35786.0000 km x 35786.0000 km x 0.0000 degrees;
Apogee Speed: 3074.9218 m/s; Perigee Speed: 3074.9218 m/s; delta v to this orbit: 1602.9613

Total delta v to GEO: 1602.9613 m/s

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