China's Space Program News Thread


taxiya

Brigadier
Registered Member
The landing accuracy of Shenzhou-13 is very impressive.
View attachment 77413
  1. The helicopter was overhead when Shenzhou-13 touched down. Meaning the last prediction (4th) is very accurate.
  2. The landing range was set in a 3.6km by 3.6km square.
  3. The 1st prediction was "100 04 46 E, 41 37 23 N". It was made just after seperation of capsule and propulsion module while at altitude between 100km and 140km.
  4. The 4th (last) prediction was "100 04 34 E, 41 37 23 N". It was made when the capsule altitude was few hundred meters. At this moment it is only 280 meters from the theorotical landing point (1st prediction?).
We can see from the screen capture how close it is. I guess the final touch down point is around 200 meters to the 1st prediction.

In comparison, I watched SpaceX's landing on May 2nd. The touch down point was 4.6 nautical miles (8.52km) in range (from the target/prediction).

The local weathers are equally calm.
Correction of misquoting, but does not affect the conclusion.
  • The landing range was set in a 3.6km by 3.6km square.
It is 36km.
 

by78

Lieutenant General
A next-generation crewed capsule on display at Zhuhai. This one was launched on an unmanned mission in May of last year.

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taxiya

Brigadier
Registered Member
Comparison of Tianzhou-2 and Tianzhou-3. The green star points to a hinge like device at 0 degree. All direction is clockwise.
Tianzhou-2:
  1. There is a big round plate on top of a cylindrical structure right next to the green marker.
  2. Further next is the attaching port for robotic arm.
tianzhou2.jpg

Tianzhou-3:
  1. The plate is gone.
  2. In the place of robotic arm attachment port, it is a cuboid structure.
tianzhou3.jpg

Regarding the attachment port, I suspect that it is a modification. Tianzhou-2's port is at an angle in between Tianzhou-2 and the node module (节点舱). It is difficult to maneuver the robotic arm's attaching head to reach the port. So Tianzhou-3 tilts the port to radial direction.
 

by78

Lieutenant General
More details on that "service spacecraft" concept by the 8th academy of CASC. I'm not sure how far along this project is. It's basically a refueler for satellites. It performs a soft capture of a satellite and then tops up its propellant tanks.


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davidau

Junior Member
Registered Member
More details on that "service spacecraft" concept by the 8th academy of CASC. I'm not sure how far along this project is. It's basically a refueler for satellites. It performs a soft capture of a satellite and then tops up its propellant tanks.


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Smart move which makes the various satellites last longer and without the tremendous costs to loft another replacement.
 

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