Helsinki-China plans to build a huge space-based solar power station in geostationary orbit using a new type of super-heavy rocket currently under development. 4,444 The upcoming Long March 9 rocket will be launched multiple times to build space solar power facilities 35,786 kilometers away from the earth, according to Long Lehao, chief designer of China’s Long March rocket series, in a speech in Hong Kong on Thursday.
The project aims to establish a large catchment area that can almost continuously receive solar energy, and the atmospheric or seasonal changes will not affect the energy level. The converted energy will be transmitted to the earth via microwave or laser. The project will provide large-scale renewable energy and help solve the problem of energy shortages.

Long stated that the project will begin a small-scale power generation trial in 2022, and a megawatt-level power generation facility will be completed around 2030.

Achieve gigawatt-level commercial power generation by 2050. This will require more than 100 Long March 9 launches and approximately 10,000 tons of infrastructure to be assembled in orbit. This complex project requires a solar energy collection system covering an area of ​​square kilometers and a large microwave energy transmission subsystem. Another senior aerospace figure and chief designer of the Shenzhou spacecraft,
Qi Faren, also spoke about this complex and large-scale project and its potential value a few days ago.
However, both Long and Qi pointed out major challenges, including economic feasibility and manufacturing costs, as well as the efficiency and safety of power transmission.

space-based solar projects have previously been considered by the United States, Japan and other countries. According to Xinhua News Agency, China listed space solar energy as a key research project in 2008. The Chinese Academy of Space Technology (CAST) began to build a test base in Chongqing in 2019 to study high-power wireless power transmission.
The long new road on March 9?

The Long March 9 launch vehicle is the Long March 9 launch vehicle. After years of research and technological development, the launch vehicle was officially approved by the government this spring. However, based on Long’s introduction, the design may have undergone fundamental changes recently.
A slide shows the old design of the Long March 9, composed of a 10 meter diameter center stage and four 5 meter diameter side impellers, with 500 tonnes of thrust, a YF130 double nozzle engine, which will be replaced by one The vision of a 10.6 meter diameter core powered by a set of engines replaced 16 new YF135 single nozzle engines. The
payload capacity will increase from 140 metric tons at low Earth orbit (LEO) to 150 tons, and from 50 tons at inter-monthly injection (TLI) to 53 tons. The two-level version will be launched to LEO, while the three-level version will operate in a higher orbit.

Although there is no description, it is expected that the new engine configuration will be more suitable for the first stage of reuse. This capability is necessary for space-based solar projects. The introduction of
Long also mentioned another heavy rocket for the launch crew, named Long March 5DY. The two launches of the tri-nuclear launcher can be used to send astronauts to the moon before 2030, using the previously proposed lunar orbital rendezvous mission profile. Other developments relayed by
Long include the space plane program and the first recovery attempt of the new Long March 8 in 2022. According to previous versions, the first phase of the jump test is expected to take place in 2021.


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