Space/Science — HabitableZone

Space/Science » in reply to Go China Go!

re: That is not a LH2/LOX rocket !

http://a799.g.akamai.net/3/799/388/95e26bea20ba4e/www.msnbc.com/news/2041520.jpg


Notice the smokey rocket exhaust: The Shenzou V uses the Long March CZ-2F booster, with four liquid nitrogen tetroxide/unsymmetrical dimethylhydrazine (N2O4/UDMH) fuelled strap-on boosters. As such it does not require cryogenic insulation as does NASA's shuttle. However, since UDMH is a hypergolic fuel (highly reactive with moisture), it's storage and transport raises the cost of production from $1/kg to about $25/kg (1994 dollars). NASA may have switched to LH2/LOX for this reason, but don't quote me on that. Other liquid fuels could be kerosene/LOX, lots of alternatives, but with a sacrifice in performance.

Info on Long March series of Chinese-built rockets

Info on manned-precursor Long March CZ-2E booster

Info on N2O4/UDMH rocket fuel and which spacecraft use it

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