Some updates on Long March 9 as well as space-based solar power station (SSPS) given by Mr. Long Lehao (龙乐豪) during his latest talk:
– Long March 9 will first fly in 2032 or later. The first stage will be powered by YF-215 engines (200-ton full-flow staged combustion cycle, LOX/Methane fuel).
– The YF-215 has already passed technical verifications and accumulated some 1,000 seconds of test runs.
– The first stage will definitely be reusable.
– Long March 9 will be used to build SSPS. China will build a 10-megawatt SPSS by 2035 and a gigawatt-level SPSS by 2050. R&D on SSPS is making very promising progress.