Author Topic: SpaceX Falcon 9 : Türksat 5A : January 7/8, 2021 (Read 94136 times)

Jansen · « **Reply #120 on:** 01/08/2021 01:23 am »

Stage 1 entry burn

pb2000 · « **Reply #121 on:** 01/08/2021 01:24 am »

SECO-1 and successful landing.

FutureSpaceTourist · « **Reply #122 on:** 01/08/2021 01:25 am »

https://twitter.com/nasaspaceflight/status/1347368562315448321

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Falcon 9 B1060.4 has landed - the fourth time for this booster. Bullseye too.

All seems so "perfectly normal" these days, doesn't it!

FutureSpaceTourist · « **Reply #123 on:** 01/08/2021 01:35 am »

https://twitter.com/emrekelly/status/1347370426838691841

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No complaints about this one. #Turksat5A is en route to orbit.

Edit to add:

https://twitter.com/johnpisaniphoto/status/1347370753830891520

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Florida’s Space Coast and Falcon 9 looking good tonight.

@SpaceX launches #Turksat5A this evening from SLC-40 marking the first commercial launch of the new year for SpaceX and #Falcon9

LouScheffer · « **Reply #124 on:** 01/08/2021 01:43 am »

70 second second stage burn, which seems longer than usual. I predict a significant inclination reduction for the transfer orbit. It should have excess performance because of the low mass (3.5 tonnes). They could use it for a super-synchronous apogee or inclination reduction, but I'm guessing the latter.

pb2000 · « **Reply #125 on:** 01/08/2021 01:48 am »

Deploy confirmed.

Jansen · « **Reply #126 on:** 01/08/2021 01:49 am »

Payload deployment successful

Jansen · « **Reply #127 on:** 01/08/2021 01:51 am »

https://twitter.com/SpaceX/status/1347374803787792386

zubenelgenubi · « **Reply #128 on:** 01/08/2021 01:57 am »

Quote from: LouScheffer on 01/08/2021 01:43 am

70 second second stage burn, which seems longer than usual.

No video or telemetry coverage of the 2nd 2nd stage burn: Ground station in Gabon is down.
https://twitter.com/NASASpaceflight/status/1347373103937150976

JimO · « **Reply #129 on:** 01/08/2021 02:08 am »

Stage2 deorbit burn?

LouScheffer · « **Reply #130 on:** 01/08/2021 02:08 am »

Really low parking orbit as well (about 175 km). Good for performance, but potentially risky for the satellite. If the satellite cannot fire up its engines within a few orbits, it risks re-entering. A higher parking orbit means a higher transfer orbit perigee, which gives more time for debugging if anything goes wrong. F9 second stage should re-enter very quickly - no explicit re-entry burn should be needed.

ZachS09 · « **Reply #131 on:** 01/08/2021 02:19 am »

When telemetry was regained after SECO-2 at T+30 minutes, 50 seconds, the maximum velocity was 35,154 kilometers per hour and the altitude was 471 kilometers. That was 167 seconds after the planned SECO-2 time of T+28 minutes, 3 seconds.

Using the Koreasat 5A mission as a basis, the SECO-2 time of that mission was T+27 minutes, 52 seconds (altitude 306 kilometers, velocity 35,546 kilometers per hour). 167 seconds later was at T+30 minutes, 39 seconds. Altitude and velocity at that time were 469 kilometers and 35,051 kilometers per hour.

And Koreasat 5A was 200 kilograms heavier than Turksat 5A. Given that the apogee of Koreasat 5A's GTO was more than 50,000 kilometers, could Turksat 5A have gone a bit higher than that?

Robotbeat · « **Reply #132 on:** 01/08/2021 02:25 am »

Quote from: Rebel44 on 01/07/2021 01:33 pm

Quote from: RocketLover0119 on 01/07/2021 12:39 pm
Surprised SpaceX has yet to comment on the launch when it’s happening today.hopefully we get word soon.

There were some protests asking SpaceX to drop this customer due to the recent war in Nagorno Karabakh in which Turkey was involved - so I expect them to keep the mission-related announcements relatively low-profile.

That makes sense. Good thing the war is over, though.

Raul · « **Reply #133 on:** 01/08/2021 05:56 am »

Turksat-5A with stage2 as two cataloged objects with initial orbital parameters:

2021-001A - TBA - TO BE ASSIGNED - 2021-01-08 05:47 UTC - 286.17/55031.12km/17.66°
2021-001B - TBA - TO BE ASSIGNED - 2021-01-08 05:52 UTC - 285.5/55277.64km/17.66°

FutureSpaceTourist · « **Reply #134 on:** 01/08/2021 05:56 am »

https://twitter.com/emrekelly/status/1347401188065554437

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Turksat confirms it’s getting good signals from 5A:

FutureSpaceTourist · « **Reply #135 on:** 01/08/2021 06:08 am »

SpaceX launch photos by Ben Cooper

erv · « **Reply #136 on:** 01/08/2021 10:08 am »

No news from fairing catchers?

SMS · « **Reply #137 on:** 01/08/2021 10:13 am »

https://twitter.com/SpaceXFleet/status/1347499041849016323

soltasto · « **Reply #138 on:** 01/08/2021 11:50 am »

Quote from: Raul on 01/08/2021 05:56 am

Turksat-5A with stage2 as two cataloged objects with initial orbital parameters:

2021-001A - TBA - TO BE ASSIGNED - 2021-01-08 05:47 UTC - 286.17/55031.12km/17.66°
2021-001B - TBA - TO BE ASSIGNED - 2021-01-08 05:52 UTC - 285.5/55277.64km/17.66°

I get 1540.6 m/s to GEO for Object A and 1539.9 m/s to GEO for Object B.

jacqmans · « **Reply #139 on:** 01/08/2021 02:22 pm »

https://twitter.com/45thSpaceWing/status/1347551492723658753?s=20