The RD-274 is a mature design, variants of which have been employed since the mid-1980s. The fuel mix of UDMH (unsymmetrical dimethylhydrazine) and N202 is not especially volatile by the standards of ...
On 29 December 2002, a Long March 2F launched Shenzhou 4 for a final uncrewed test of the Shenzhou spacecraft for the upcoming flight of the first crewed mission. Until then, all missions were ...