China's Space Program News Thread

[halflife3]

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According to the segment for Chang'e 5 on CCTV 13. The spacecraft started its first braking procedure once it reaches 400km from the moon. After two brakes and two orbits around the moon, the lander separates from the orbiter and begins landing procedure. The lander will gradually descend from an altitude of 15km above the moons surface and begin slowly descend towards the lunar surface.

Once it reaches 2 meters above ground, the engines will be shut off and the lander will free fall to the surface. This is to prevent the reactive forces from tilting the lander.

 

[by78]

A 4-minute Youtube video of the entire soil extraction process, just in case you have trouble accessing it on other video platforms.

 

[halflife3]

Another version.

 

[Chish]

It looks almost fake.

1. The text on the top is in Traditional Chinese. Mainland China use simplified Chinese.
2. There is no time stamp and other data overlaid to the video as in all technical monitoring video.

And the shadows of what look like lumps of rocks are in opposite direction of the lander's shadow.

 

[escobar]

https://twitter.com/i/web/status/1334080717874221057

 

[broadsword]

https://twitter.com/i/web/status/1334080717874221057

It has been speeded up. But why couldn't the video camera take at a more normal fps of 30 or 60?

 

[SciNews]

Chang’e-5 landing from onboard camera

 

[Quickie]

It has been speeded up. But why couldn't the video camera take at a more normal fps of 30 or 60?

The video is very likely taken at a higher resolution and frame rate although the instantaneous communication between the lander and ground control may only happen at a lower quality and frame rate due to the limitation of the data communication link. The higher quality video (and pictures) is likely only downloaded at a later time and these higher quality videos may not be so readily available on social media

 

[broadsword]

The video is very likely taken at a higher resolution and frame rate although the instantaneous communication between the lander and ground control may only happen at a lower quality and frame rate due to the limitation of the data communication link. The higher quality video (and pictures) is likely only downloaded at a later time and these higher quality videos may not be so readily available on social media

But currently, high bandwidth technology exist to handle high resolution. Look at DJI's Hasselblad recording.

 

[Quickie]

But currently, high bandwidth technology exist to handle high resolution. Look at DJI's Hasselblad recording.

Because of the huge distance between the moon and earth, the communication link is only possible at a considerably reduced bandwidth.