China's Space Program Thread II

Ahmed48

Just Hatched
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Hainan Commercial Spaceport has
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.



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This space port need a lot of pads to support the growing space companies in china
 

by78

General
A tethered robotic system for retiring decommissioned satellites (developed by Northwestern Polytechnical University).

对于以中国的北斗G2、鑫诺二号为代表的一类失稳非合作目标,具有旋转速度快、惯性参数未知和无合作标识符等特征,对其捕获是公认的世界性难题,也是目前空间机器人领域研究热点。“平台卫星+机械臂式”捕获方式具有机动性弱、接管控制能力强等特点,但不适用于快旋失稳目标的捕获; 微纳卫星的捕获方式具有成本低、灵活性强、可用于快旋目标的捕获等特点,但捕获后对目标的控制能力弱。西北工业大学研制的国际上首款空间绳系机器人系统,由安装在平台卫星上的系绳收放装置、空间系绳及捕获器3部分组成 (图 13),将微纳卫星的强机动能力以及平台卫星的强控制能力有机地结合在一起,具有操作距离远(捕获距离可高达 200 m)、安全性高(无需平台抵近操作),平台和捕获器之间依靠柔性系绳连接,对平台影响小、灵活性强(捕获器带有自主机动能力)等突出优势,是捕获此类失稳非合作目标的绝佳选择...
For a class of unstable non-cooperative targets represented by China's BeiDou G2 and Xinnuo II, which have the characteristics of fast rotation speed, unknown inertial parameters and no cooperative identifiers, their capture is a recognized global problem and a research hotspot in the field of space robots. The "platform satellite + robotic arm" capture method has the characteristics of weak maneuverability and strong takeover control ability, but is not suitable for the capture of fast-spinning unstable targets; the capture method of micro-nano satellites has the characteristics of low cost, strong flexibility, and can be used to capture fast-spinning targets, but the control ability of the target after capture is weak. The world's first space tethered robot system developed by Northwestern Polytechnical University consists of three parts: a tether retracting and releasing device installed on a platform satellite, a space tether and a capturer (Figure 13). It organically combines the strong maneuverability of micro-nano satellites and the strong control ability of platform satellites. It has outstanding advantages such as long operating distance (capture distance can be up to 200 m), high safety (no need for platform approach operation), flexible tether connection between the platform and the capturer, small impact on the platform, and strong flexibility (the capturer has autonomous maneuverability). It is an excellent choice for capturing such unstable non-cooperative targets...

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Asug

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by China and Kazakhstan mentions that the two countries have agreed to explore the possibility of using each other's launch sites for commercial launches.

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Interesting news, but not entirely clear. Kazakhstan does not have its own cosmodrome. More precisely, all of Baikonur belongs to Kazakhstan, but is leased from it by Russia until 2050. There is a Russian-Kazakh complex Baiterek. But there is no rocket for him.
 

anzha

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China space news and science papers. Popular sci reporting things first:

Wired's take on the accidental launch:

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Mino Space raises $137M:

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Planetary Society writes about China's first planetary defense mission:

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After the successful farside sample collection, China's space agency has further deep space sample returns planned:

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Will ESA-China collaboration end after the sample return?

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China's spaceplane conducts proximity operations with a small object (can we call it ProxOps?)

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Papers!

Contribution of landmark-tracking data to the estimation of the gravity field and rotation parameters of 311P/PANSTARRS for the incoming Tianwen-2 space mission

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Longitude structure of Martian upper atmosphere seen from MAVEN/NGIMS during 2018 Mars dust storm (yes, you read that right, look at the authors)

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Experimental investigation and numerical simulation of intense plume impingement effects from a 10 N bipropellant thruster

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Distant retrograde orbit baseline generation considering solar eclipse mitigation

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Novel design of multi-point injection system for laboratory simulation of Martian low-pressure dust devils

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Influences of initial voltage and electrode size on propellant surface evolution in a coaxial pulsed plasma thruster

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Cislunar L4 and L5 axial orbits and their applications

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Obligations and liabilities concerning the active removal of foreign space debris: A global governance perspective

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(take a look at that last one!)
 

tiancai8888

Junior Member
Registered Member
The fixing mechanism is not only involved during the testing phase, but also plays a vital role during the launch phase, specifically in restraint and release. It holds the rocket steady during ignition until sufficient thrust is achieved, and then releases it. To put it another way, if Tianbing had opted to use additional measures to immobilize the rocket for the static test, it could have potentially led to a catastrophic loss of control during the actual launch.
May be not.
1. With actual launches, the rocket is 30% heavier. The load of the hooks should be 200t less.
2. According to SP's patents. With actual launches, they would use a loose-connection mechanism. Not a hard-coonection used in this static fire. Which means vibration won't be so direct to the hook point.

Of this test , One thing they didn't have is the vibration data. So IMO may be vibration helped to cut the hook points off like a bone saw.

We need to wait for the detail incident report

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Need to wait for the SP's detail report.
 
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