Author Topic: Yaogan-35 02A-C - CZ-2D - Xichang - June 23, 2022 (02:22 UTC)  (Read 9637 times)

Offline Rondaz

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China’s 21st launch in 2022] At UTC 02:22 June 23, 3 Yaogan(遥感/RemoteSensing)-35-02 satellites were successfully launched by #CZ2D Y64 rocket in Xichang, Sichuan. This is the 424th launch of Long March rocket family.

https://twitter.com/CNSAWatcher/status/1539865420580040709


Offline Fmedici

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Weird that the launch happened from LC-3, this would break the alternation between the two pads that has been in place so far since the previous launch was also from LC-3.

I’m not sure the servicing platforms, arms and umbilicals at LC-2 can handle the CZ-2D.

It makes sense, all the previous CZ-2D launches from Xichang happened from LC-3

Online Alter Sachse

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Weird that the launch happened from LC-3, this would break the alternation between the two pads that has been in place so far since the previous launch was also from LC-3.
All Yaogon 30 and Yaogan 35 groups were launched from LC 3.
One day you're a hero  next day you're a clown  there's nothing that is in between
        Jeff Lynne - "21century man"

Offline Rondaz

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China has made 21 orbital launches (1 failure) in 2022, after today's #CZ2D launch:

10 Jiuquan
 4 Taiyuan
 4 Xichang
 2 Wenchang
 1 Haiyang

Coming up next, Long March 4C from Jiuquan According to latest NOTAMs, liftoff is expected at ~15:45 UTC on June 27..

https://twitter.com/CNSpaceflight/status/1539879483364106242


Offline input~2

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2022-068A/52907 34.99° 487 x 499 km
2022-068B/52908 34.99° 485 x 498 km
2022-068C/52909 34.99° 488 x 499 km
2022-068D/52910 34.99° 486 x 499 km
2022-068E/52911 35.00° 486 x 498 km

Offline Rondaz

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CelesTrak has GP data for 5 objects from the launch (2022-068) of 3 YAOGAN-35 satellites atop a Long March-2D rocket from Xichang Satellite Launch Center on Jun 23 at 0222 UTC:

https://twitter.com/TSKelso/status/1539996365509472257

Offline mikezang

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长二丁“一箭三星”发射成功
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Chang Er Ding "One Arrow Samsung" successfully launched

At 10:22 on June 23, the Long March 2D carrier rocket ignited and took off at the Xichang Satellite Launch Center, and then successfully sent the satellites A, B and C of the 02 group of remote sensing 35 into the sun-synchronous orbit for the launch mission. complete success.

The satellites A, B and C of the 02 group of Remote Sensing 35 are mainly used in scientific experiments, land and resources census and other fields. Among them, Star A and Star B were developed by the Fifth Academy of China Aerospace Science and Technology Corporation; Star C was developed by the Eighth Academy of Aerospace Science and Technology Group.

The Long March 2D carrier rocket is a normal-temperature liquid two-stage carrier rocket developed by the General Manager of the Eighth Academy of Aerospace Science and Technology Group. It has the characteristics of high reliability, high safety, low cost, and short-cycle launch. The ability of satellites to implement one-shot single-satellite or multi-satellite launches.

In this mission, the Long March 2D launch vehicle control, power, thrust, telemetry, external security systems and other technologies have been upgraded to further improve the reliability of the rocket. The test team overcame many difficulties and completed the review of 8 special projects within 14 days of epidemic prevention and isolation, laying a solid foundation for the follow-up work at the launch site.

This launch is the 424th launch of the Long March series of launch vehicles.
The title "Yaogan-35 02A-C" is more correct.

Online Steven Pietrobon

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SciNews video.

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

Offline Rondaz

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Blastoff! China's Long March 2D rocket launches Yaogan-35 family satellites


Offline Rondaz

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Deployment test back on Earth (SAST).

https://twitter.com/AJ_FI/status/1543895931447394309

Offline mikezang

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国内最大离轨帆成功在轨展开
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China's largest off-orbit sail successfully deployed on orbit

On June 23, the Long March 2 Dingyao 64 carrier rocket was successfully launched. On June 26, the de-orbit system independently developed by the 805 Institute of the Eighth Academy of Sciences and configured on the rocket load compartment successfully deployed the de-orbit sail device in orbit. This is the largest off-orbit sail product in China at present, and it is also the first time in the world that off-orbit sail is applied to the cabin of a launch vehicle, aiming to slow down the growth of space debris

Offline Rondaz

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The sail was deployed on June 26. Photos after deployment in orbit..

https://twitter.com/CNSpaceflight/status/1543957394580836352

Offline jcm

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Interestingly, according to the SatNOGS observers
 https://network.satnogs.org/observations/?norad=52910
the upper stage is still transmitting on 401 MHz as of Feb 2023. Unlike the case of Yaogan 34-02/2022-27A, there was no mention of an upper stage hosted payload on this mission other than the drag sail.
It also appears that the drag sail is indeed on the upper stage and not on the separated payload adapter.

Edit: the continuing transmissions and the high drag of the upper stage appear to be present for all the YG35 missions.
Transmissions have  [[not] xxx edit: also ] been reported from the YG36 upper stages.
« Last Edit: 03/09/2023 10:03 pm by jcm »
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Jonathan McDowell
http://planet4589.org

Offline gwiz

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It also appears that the drag sail is indeed on the upper stage and not on the separated payload adapter.
Always assuming that the catalogue identifications are correct.

Offline jcm

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It also appears that the drag sail is indeed on the upper stage and not on the separated payload adapter.
Always assuming that the catalogue identifications are correct.

True.
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Jonathan McDowell
http://planet4589.org

Offline jcm

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  • Jonathan McDowell
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And in fact, this upper stage has now reentered, breaking up over southwest Texas at 0333 UTC Mar 8
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Jonathan McDowell
http://planet4589.org

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