CZ7, not the CZ5, is planned to replace CZ2F, but this is still a few years away.
Quote from: TorenAltair on 09/18/2019 02:25 pmCZ7, not the CZ5, is planned to replace CZ2F, but this is still a few years away.I think that this is onl;y true in the sense that the new generation manned spacecraft which will eventually replace Shenzhou will fly on the CZ-7 for Earth orbit missions. In the meantime the CZ-2F will continue to launch Shenzhou spacecraft until that spacecraft is retired.Are there still plans to add the LOX/LH stage to the existing CZ-7? This was part of the original planning for the vehicle.
From the articleThat does not sound like CZ-9, which had a lift off mass of 4137 t and could send 50 t to LTO. This could be the Chinese FH design. A dual launch could do a Lunar mission, sending the LM first to LLO or NRO, followed by the next generation crewed vehicle. The SpaceX FH liftoff mass is 1421 t and can send about 20.8 t to the Moon.
Look at the source at http://www.guancha.cn/politics/2019_10_11_520874.shtml .Obviously the CMSE office continued to push this 2018 design of their own and CALT agreed to proceed with it.
Quote from: Steven Pietrobon on 10/16/2019 05:00 amFrom the articleThat does not sound like CZ-9, which had a lift off mass of 4137 t and could send 50 t to LTO. This could be the Chinese FH design. A dual launch could do a Lunar mission, sending the LM first to LLO or NRO, followed by the next generation crewed vehicle. The SpaceX FH liftoff mass is 1421 t and can send about 20.8 t to the Moon.I think you considerably over estimate the LTO capability of the FH.Assuming 60 tonnes LEO (expendable) a low energy rocket as a rule of thumb will send about a quarter of LEO mass to LTO (with hydrogen upper stage it's about a third). So 15 tonnes maximum, and much less reusable.
I think you considerably over estimate the LTO capability of the FH.Assuming 60 tonnes LEO (expendable) a low energy rocket as a rule of thumb will send about a quarter of LEO mass to LTO (with hydrogen upper stage it's about a third). So 15 tonnes maximum, and much less reusable.
Quote from: daedalus1 on 10/18/2019 09:13 amI think you considerably over estimate the LTO capability of the FH.Assuming 60 tonnes LEO (expendable) a low energy rocket as a rule of thumb will send about a quarter of LEO mass to LTO (with hydrogen upper stage it's about a third). So 15 tonnes maximum, and much less reusable.I use a model based on known performance of FH expendable. SpaceX give a payload to GTO (2.44 km/s) as 26.7 t and payload to Mars (3.6 km/s) as 16.8 t. So I believe my estimate for TLI (3.185 km/s) of 20.8 t is entirely reasonable. You can download my model from the link below.https://www.spacex.com/falcon-heavyhttp://www.sworld.com.au/steven/space/fh.zip