China's Space Program Thread II

by78

General
High-resolution images Ceres-1's first launch from sea. This marks the 9th flight of the Ceres-1 rocket and the 40th Chinese launch this year. The four Tianqi satellites launched are part of a constellation of
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communications satellites developed by the private company Beijing Guodian (北京国电高科). The constellation that will be completed in 2024, at which time it will consist of 38 LEO satellites.

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on the Tianqi constellation of IoT communications satellites.

Currently, 21 satellites are in operation. The constellation will be finished next year (38 satellites total) and achieve global coverage.
 

taxiya

Brigadier
Registered Member
Tianhui has recently completed a series of tests on the (oxygen and kerosene) turbopumps of the RedDragon-1 engine. Their performance has met all design requirements.

This is a pretty big deal. Tianhui Aerospace has successfully completed a partial system test run of the 100-ton reusable mixed cycle (
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+
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) RedDragon-1 engine (红龙一号). The full system hot run will take place later this year.

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A late comment on this particular engine. In your earlier post you called it mixed cycle (
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).

The inventor has patents of two different engines.
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and
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The first one is 开式分级燃烧抽气循环, open tap-off cycle staged combustion. There is no gas generator, the combustion chamber is devided in two halves, the upper half is fuel rich, part of the gas from it is tapped off to drive the combined fuel and oxygen pump, essentially the upper half of combustion chamber acts as preburner/gas generator.
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The second one is 半开式富氧补燃循环, semi-open cycle oxygen rich staged combustion. It has two gas generators/turbines driving two pumps. Red circled part is fuel line turbine and pump, cyan is oxygen line.
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From the look of the photo in your post, I think it is the second one instead of the tap-off one. See illustration below, and compare with above.

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Michael90

Junior Member
Registered Member
Very good, I don't think a SOE like Satnet/Guowang can compete with Spacex/Starlink. Need to be a private company like HW.
Agree. But is that not going to cause conflict og interets groups with State owned companies? Since on a normal day the Chinese government or most governments for that matter will favour state companies for obvious reasons. So if the state already has concrete plans in motion, not sure its a good idea for Huawei to enter that field.
 

escobar

Brigadier
Agree. But is that not going to cause conflict og interets groups with State owned companies? Since on a normal day the Chinese government or most governments for that matter will favour state companies for obvious reasons. So if the state already has concrete plans in motion, not sure its a good idea for Huawei to enter that field.
A dynamic private chinese will be more successfull selling high-speed internet anywhere across the world than any SOE.
I think Satnet/Guowang will be more a civil-military network like Spacex Starshield, meeting the most demanding government and military requirements. Guowang constellation will include not only communication but also earth observation. The privates companies will target international clients and compete agaisnt Starlink/Kuiper/Oneweb.
 
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sunnymaxi

Captain
Registered Member
Shanghai Government issued the "Shanghai Action Plan to Promote Commercial Aerospace Development and Create a Space Information Industry Highland (2023-2025)" - the plan proposes that by 2025, a full coverage industrial chain from rockets, satellites, ground stations to terminals will be formed. Develop three key products: a new generation of medium and large launch vehicles, low-cost and highly integrated satellites, and intelligent application terminals. It will form a mass manufacturing capability with an annual output of 50 commercial rockets and 600 commercial satellites.

Promote the development of the Long March 6C, a new generation of medium and large launch vehicles with a diameter of 3.8 meters, and achieve its first flight. Promote the integration of R&D, manufacturing, assembly, and testing to improve the high-density launch guarantee level of satellite constellations. Deepen the demonstration of maritime launch platforms and promote the construction of commercial launch sites.

Research on key technologies of the space transportation system and break through technical bottlenecks such as liquid oxygen methane power, simple maintenance and reusability, and soft landing flight control. Carry out technical research on remote intelligent test and launch, space deorbit and terminal applications, and on-orbit fault handling to promote technological innovation in the space transportation system. Carry out technical research and system development around the space station's low-cost cargo transportation system, manned lunar rover, earth-lunar economic transportation system and other fields.

Improve the design, construction and operation capabilities of commercial constellations, actively strive for the key tasks of satellite Internet and comprehensive time and space (PNT) system construction, and vigorously support the construction of Qianfan satellite constellation, smart skynet, very high frequency data exchange system (VDES) and other constellation networking construction. Carry out the construction of a satellite measurement, operation and control platform to provide measurement, operation and control management services in the launch section and in-orbit operation for various satellite systems in multiple frequency bands and different orbits.

Carry out research on key technologies of 6G satellite-ground integrated satellite systems, and make breakthroughs in the optimization design of satellite-ground hybrid network constellation configurations, the overall architecture design of communication network systems, integrated base stations based on satellite relays, and their mobile networking technologies..

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