Author Topic: Chang'e-6 lunar sample return - CZ-5 - Wenchang - May 3, 2024 (09:27 UTC)  (Read 54095 times)

Offline Galactic Penguin SST

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Offline Galactic Penguin SST

So I've seen some rumors of the whole mission timeline. Take it with some salt but per public information this should be close:
LOI: May 7
Lander separation from orbiter: June 1
Landing at Apollo Basin: June 2
Launch of ascent stage: June 4
Docking of ascent stage with orbiter: June 6
TEI: June 20
Landing on Earth: June 25
« Last Edit: 05/03/2024 01:22 pm by Galactic Penguin SST »
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Offline spacexplorer

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Launch timeline attached below:

T+00:00 Liftoff
T+00:17 Pitch-over
T+02:55 BECO
T+02:56 Boosters sep
T+05:26 Fairing sep
T+08:01 MECO
T+08:05 1st stage sep
T+08:08 SEI-1
T+12:15 SECO-1
T+28:45 SEI-2
T+35:33 SECO-2
T+35:48 Terminal Guidance ends
T+36:58 Spacecraft sep

In UTC time, stating 2024/05/03 09:27 (converted by ChatGPT, not double checked; exact time after LOI set to 00:00):


| Time (T+)  | Event                          | UTC                |
|------------|-------------------------------|---------------------|
| T+00:00    | Liftoff                       | 2024/05/03 09:27 UTC|
| T+00:17    | Pitch-over                    | 2024/05/03 09:44 UTC|
| T+02:55    | BECO (Booster Engine Cutoff)  | 2024/05/03 12:22 UTC|
| T+02:56    | Boosters sep (Separation)     | 2024/05/03 12:23 UTC|
| T+05:26    | Fairing sep (Separation)      | 2024/05/03 14:53 UTC|
| T+08:01    | MECO (Main Engine Cutoff)     | 2024/05/03 17:28 UTC|
| T+08:05    | 1st stage sep (Separation)    | 2024/05/03 17:32 UTC|
| T+08:08    | SEI-1                         | 2024/05/03 17:35 UTC|
| T+12:15    | SECO-1 (Second Engine Cutoff) | 2024/05/03 21:42 UTC|
| T+28:45    | SEI-2                         | 2024/05/04 14:12 UTC|
| T+35:33    | SECO-2 (Second Engine Cutoff) | 2024/05/04 20:00 UTC|
| T+35:48    | Terminal Guidance ends        | 2024/05/04 20:15 UTC|
| T+36:58    | Spacecraft sep (Separation)   | 2024/05/04 21:25 UTC|
| T+3d       | LOI (Lunar Orbit Insertion)   | 2024/05/07 00:00 UTC|
| T+29d      | Lander separation from orbiter| 2024/06/01 00:00 UTC|
| T+30d      | Landing at Apollo Basin       | 2024/06/02 00:00 UTC|
| T+32d      | Launch of ascent stage        | 2024/06/04 00:00 UTC|
| T+34d      | Ascent stage docking w.orbiter| 2024/06/06 00:00 UTC|
| T+48d      | TEI (Trans-Earth Injection)   | 2024/06/20 00:00 UTC|
| T+53d      | Landing on Earth              | 2024/06/25 00:00 UTC|



« Last Edit: 05/03/2024 01:24 pm by spacexplorer »

Offline spacexplorer

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Quick&dirty countdown page based on above data:

https://win98.altervista.org/space/exploration/change6-countdown.html

Can anybody confirm if Local Time column works properly?
« Last Edit: 05/03/2024 01:42 pm by spacexplorer »

Offline Galactic Penguin SST

Very rainy launch:

(this thread will be left open for the whole day; please use https://forum.nasaspaceflight.com/index.php?topic=53670.0 for subsequent mission operations)
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Offline spacexplorer

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« Last Edit: 05/03/2024 02:48 pm by spacexplorer »

Offline Galactic Penguin SST

Image batch from CNSA, CASC and SpaceLens
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Offline ZachS09

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Why linger in lunar orbit for 26 days before landing?

If Chang'e 6 achieves LOI in three days, it should deploy the lander a day or two later to save time.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Steven Pietrobon

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Why linger in lunar orbit for 26 days before landing?

Perhaps to wait for optimal lighting conditions for landing.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Phil Stooke

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Testing communications with Queqiao 2?

Offline spacexplorer

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Payloads list:

https://twitter.com/SegerYu/status/1756520392842453266/photo/1

Not chinese (for easier googling) :
DORN - Detection  Of Outgassing Radon (France)
NILS - Negative Ions at Lunar Surface (ESA)
INRRI - INstrument for landing-Roving laser Retroreflecting Investigations, Italy, INFN (Istituto Nazionale Fisica Nucleare)

About INRRI:
Quote
INRRI will also support laser and quantum communications, carried out among future Mars
Orbiters and Mars Rovers. This will be possible also because the INRRI laser retroreflectors will be
metal back-coated and, therefore, will not change the photon polarization. The added value of
INRRI is its low mass, compact size, zero maintenance and its usefulness for any future laser altimetry, ranging, communications, atmospheric lidar capable Mars orbiter, for virtually decades after the end of the Mars surface mission, like the Apollo and Lunokhod lunar laser retroreflectors.
MoonLIGHT and INRRI are proposed for landings on the Moon (two Google Lunar X Prize Missions,
namely Moon Express; Russia’s Luna-27 mission, as well as others under consideration/negotiation, also with the help of ASI, ESA and other partnerships)


INNRI was also mounted on unlucky Schiaparli/Exomars lander:
https://exploration.esa.int/web/mars/-/57467-inrri-integrated-on-board-exomars-schiaparelli
« Last Edit: 05/04/2024 06:15 am by spacexplorer »

Offline astropl

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Is there also a small rover on board the probe?

Waldemar Zwierzchlejski (astropl)
http://lk.astronautilus.pl

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It would be really small... The white wheels give the impression of plastic.

Offline jcm

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We now have
59627 82A - no TLEs
59628 82B -  1 TLE,  91 x 537024 km x 23.15 deg  Epoch May 3.600
59629 82C -  1 TLE, -89 x 518078 km x 23.04 deg  Epoch May 3.680

I wonder if 59627 is just an error.
-----------------------------

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http://planet4589.org

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For the mission operations on TLT, lunar orbit, descent, ground operations and sample return, please use https://forum.nasaspaceflight.com/index.php?topic=53670.0 for subsequent mission operations)

Offline Star One

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Chang’e-6 enters lunar orbit:


Offline mikezang

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与嫦娥六号分离,刚“单飞”探月的上海交大“思源二号”立方星在忙什么?
Quote
What is Shanghai Jiao Tong University's "Siyuan 2" CubeSat busy with after being separated from Chang'e-6 and having just "solo" to explore the moon?

At 16:14:36 ​​on May 8, the "SJTU Siyuan-2 (ICUBE-Q)" lunar exploration satellite developed by the Intelligent Satellite Technology Center of the School of Aeronautics and Astronautics of Shanghai Jiao Tong University successfully separated from Chang'e-6 and entered the predetermined orbit. Power on and get the first image photo successfully. This marks the official launch of the scientific exploration mission of China's first lunar exploration satellite weighing less than 10 kilograms. It will continue to capture lunar image data and conduct a series of experiments.

"SJTU Siyuan 2" is the first lunar orbit satellite developed by Shanghai Jiao Tong University after the first student satellite "SJTU Siyuan 1". It is also the first deep space exploration nanosatellite of a domestic university. The reporter learned from Shanghai Jiao Tong University that the "SJTU Siyuan No. 2" weighs only 6.5 kilograms and has a total carrying weight of 9 kilograms, achieving a breakthrough in weight and volume. At the same time, it has successfully carried a self-developed X-band measurement, control and digital transmission integrated communication machine, introducing Dynamic intelligent task scheduling strategy and on-orbit fault diagnosis algorithm enable satellites to automatically detect and diagnose possible system faults.

The "SJTU Siyuan-2" CubeSat was successfully launched into orbit carrying Chang'e-6, and was successfully released and separated today after five days of on-orbit storage. Just 14 seconds after its "solo flight", it successfully established a satellite-ground link, and the Kashgar ground station successfully received satellite telemetry data; one minute later, the satellite sailboard was smoothly deployed, the flywheel started to control, and entered the rate damping mode; 16 At 21 minutes and 26 seconds, the satellite completed satellite velocity damping and entered the sun orientation mode; at 16 hours and 23 minutes and 18 seconds, the Kashgar ground station successfully received the first separated imaging image data; in the evening, it successfully obtained remote sensing data of lunar landforms.

The reporter learned from the Shanghai Jiao Tong University satellite team that currently, the "Siyuan 2" CubeSat is currently flying normally, the voltage of the entire satellite is normal, the attitude is stable, and all functions are working stably and normally. The separation imaging data was successfully obtained, and the mission was a complete success. In the future, according to the scheduled plan, it will use its micro-camera to continue to obtain detailed images of the lunar surface, carry out intelligent processing of image on-orbit data, conduct nano-satellite-level deep space lunar-ground communication and other new technology verification, and fully explore low-level micro-nano satellites. Cost deep space exploration model.

"SJTU Siyuan 2" demonstrates Shanghai Jiao Tong University's innovation in the research and application of microsatellite technology. Professor Wu Shufan of the School of Aeronautics and Astronautics has led a team that has been engaged in research and testing of microsatellite technology for many years. This time, it integrated energy supply, communication systems and scientific experimental equipment within limited space and mass, overcoming and solving many technical problems. The team of Professor Zeng Xiaoqin of Shanghai Jiao Tong University realized the first application of high-performance lightweight magnesium alloy in my country's satellite electronic control system. Facing the challenge of space corrosion, the team innovatively developed high-performance lightweight magnesium alloy materials that made the "SJTU Siyuan No. 2" electronic control The box shell is 30% lighter than traditional aluminum alloys, and can overcome space corrosion, shield cosmic electromagnetic radiation that causes downtime, and ensure the long-term safe service of satellite electronic systems.

"SJTU Siyuan-2" not only carries scientific research tasks, but is also one of the four international payloads of Chang'e-6. It is the result of joint research and development by Shanghai Jiao Tong University and the Pakistan Institute of Space Technology. This cooperation project not only deepens the cooperation between China and Brazil in the aerospace field, but also provides valuable examples of aerospace application and technology promotion for the "Belt and Road" partners.
The SJTU Siyuan-2 released from Chang'e-6.

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


 

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