Talk:Long March 9

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Thrust figures in sidebar are definitely wrong

Thrust figures noted in sidebar (4800KN x 4 boosters, plus 4800KN first stage = 24 MN) must be inaccurate, as that's insufficient to even lift the mass noted (3,997,000 kg). There is no source attached in the sidebar. The most recent English language source among footnotes ^[1] estimates "launch mass of over 4,000 metric tons, producing close to 6,000 tons of thrust", which might be slightly optimistic but is in the right range for a modern super heavy launch vehicle. 2022-12-29T09:58:07‎ 124.123.164.16

References

^ https://spacenews.com/china-reveals-details-for-super-heavy-lift-long-march-9-and-reusable-long-march-8-rockets/

Nrbnekudjk

It is much better than the Japanesse launces 124.123.164.16 (talk) 09:58, 29 December 2022 (UTC)[reply]

Same name, but the CZ-9 has evolved to a Starship-like reusable design

The CZ-9 has retained the name, but by early 2023 has evolved to a very dufferent Starship-like reusable design, unlike the earlier solid-rocket booster attached design that was fully expendable, just like Ariane 5 and the US government's SLS.

While CZ-9 has mostly just been paper concepts since 2009-10, it is beginning to appear (after 2021) that the Chinese space industrial complex is not going to make the same mistake that the European ESA did with the Ariane 6, designed (2014) and developed after SpaceX had already upended launch vehicle economics, and yet they retained a legacy expendable architecture all during the 9+ year development effort (Ariane 6 has still not yet flown as of early 2023). Here is a good article on the CZ-9 with serious research into the Chinese sources, historically and recently: How Chang Zheng 9 arrived at the “Starship-like” design

However, in this 14th year after CZ-9 was first mentioned, and with current flight date slated for no earlier than 2033, it appears a lot of this Chinese rocket is still just paper design concepts. —N2e (talk) 04:08, 28 April 2023 (UTC)[reply]

Specific Impulse listed

Does anyone have a source to back the specific impulse (first stage) listed in the infobox?

It's suspiciously ~~close~~ identical to that listed for Raptor. Redacted II (talk) 20:35, 13 June 2023 (UTC)[reply]

[1] ttps://spacenews.com/china-reveals-details-for-super-heavy-lift-long-march-9-and-reusable-long-march-8-rockets/

[1]