Author Topic: Yaogan-40 02A-C - CZ-6A - Taiyuan - May 11, 2025 (13:27 UTC)  (Read 4707 times)

Offline mikezang

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« Last Edit: 05/12/2025 12:50 am by mikezang »

Offline mikezang

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Launched!

Offline Liss

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Yaogan 40 group 02:

Quote
央视新闻
CCTV News
【祝贺!#我国成功发射遥感四十号02组卫星#[威武]】今天,我国在太原卫星发射中心使用长征六号改运载火箭,成功将遥感四十号02组卫星发射升空,卫星顺利进入预定轨道,发射任务获得圆满成功。该卫星主要用于开展电磁环境探测及相关技术试验。
[Congratulations! #China successfully launched the Remote Sensing Satellite No. 40 Group 02#[Awesome]] Today, my country successfully launched the Remote Sensing Satellite No. 40 Group 02 into space using the Long March 6 modified carrier rocket at the Taiyuan Satellite Launch Center. The satellite successfully entered the predetermined orbit and the launch mission was a complete success. The satellite is mainly used to carry out electromagnetic environment detection and related technical experiments.
This message reflects my personal opinion based on open sources of information.

Offline Galactic Penguin SST

BTW the official 13:27 UTC launch time seems to be incorrect, as in this video below the launch was visible like 5 minutes before.



I suspect it's 21 being mistaken for 27. Someone can check on this when orbit parameters are available.

https://twitter.com/Cosmic_Penguin/status/1921580074068816050
« Last Edit: 05/11/2025 02:57 pm by Galactic Penguin SST »
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery.

Online TheKutKu

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The serial number is Y9

CAST Manufacturer: https://www.stdaily.com/web/gdxw/2025-05/11/content_337997.html

This launcher had the same fairing, and likely the same 3-satellites stacked configurations, as the previous Yaogan 40 launch from September 2023: https://x.com/CNSpaceflight/status/1700763377369538998

It has been reported that SAST has managed to shorten the launch campaign to 2 weeks, it is indeed the shortest turnaround for CZ-6A (22  days, previous record was 35 days), https://news.pconline.com.cn/1925/19251372.html

Quote
"During this mission, the transfer process of the satellite-fairing assembly was extremely tight in schedule, involved heavy workload, and demanded high environmental safeguards," said a member of the rocket test team. Precipitation was expected after 10 a.m. that day. To ensure the satellite transfer, hoisting, and docking procedures would not be affected by rain, the team overcame difficulties and completed the transfer and docking tasks with high quality before 10 a.m., ensuring the mission progressed as planned.

Facing the demand for high-frequency launches, the Long March 6A rocket test team has continuously optimized launch site procedures. For this mission, they rigorously implemented the "2+12-day" testing and launch process. To accommodate payload variations, the rocket adopts a universal and modular design philosophy. The first stage remains consistent across launches, unaffected by payload changes, while the second stage follows a maximum-envelope design principle, supporting both single- and dual-engine ignition configurations. Depending on payload requirements, different fairings, support cabins, and adapters can be selected. In the event of payload adjustments, the rocket can achieve rapid launch within six months.

In this particular case, it is reported this was a single-ignition S2.

The trail of this dusk launch was well visible: https://v.douyin.com/D0o3kkKXZMM/
An view of the launch from the public:https://v.douyin.com/zYhjDTrsFCo/
« Last Edit: 05/11/2025 04:25 pm by TheKutKu »

Offline Steven Pietrobon

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BTW the official 13:27 UTC launch time seems to be incorrect, as in this video below the launch was visible like 5 minutes before.

Launch time seems to be about 21:18 local (13:18 UTC) according to the video you showed. Here are screen grabs just before and after the launch was seen. I cropped the images to show them in landscape.

Pet hate. I wish people would learn how to put their phone in landscape mode when taking videos!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline mikezang

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我国成功发射遥感四十号02组卫星
Quote
my country successfully launched the Remote Sensing Satellite No. 40-2

Xinhua News Agency, Taiyuan, May 11 (Li Guoli, Li Chen) At 21:27 on May 11, my country successfully launched the Remote Sensing Satellite No. 40 Group 02 at the Taiyuan Satellite Launch Center using the Long March 6 modified carrier rocket. The satellite entered the predetermined orbit smoothly and the launch mission was a complete success.
The official T0 is 21:27 local time.

Offline 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 catdlr

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It's Tony De La Rosa, ...I don't create this stuff, I just report it.

Online TheKutKu

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Did this launch more than 3 satellites?

Offline Liss

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I believe there are three as always, plus two rocket parts (cylindrical sections between Stage 3 and shroud) and the third stage.
This message reflects my personal opinion based on open sources of information.

Online TheKutKu

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I believe there are three as always, plus two rocket parts (cylindrical sections between Stage 3 and shroud) and the third stage.

You are right, previous Yaogan 40 launch also had 6 items, with 1 in a lower orbit, like this one.

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