About: Long March 1D   Goto Sponge  NotDistinct  Permalink

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During the 1990's CALT developed an improved version of the DF-4 to test the reentry vehicle warheads of the DF-31. They took advantage of this development and offered it as the Long March 1D for commercial application. The modification included: An DF-4 improved first stage, which used the new version of the YF-2B, and switched propellants to UDMH/N2O4 for improved performance. The use switch of the second stage YF-3A, for the Long March 4 third stage engine, the YF-40.

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  • During the 1990's CALT developed an improved version of the DF-4 to test the reentry vehicle warheads of the DF-31. They took advantage of this development and offered it as the Long March 1D for commercial application. The modification included: An DF-4 improved first stage, which used the new version of the YF-2B, and switched propellants to UDMH/N2O4 for improved performance. The use switch of the second stage YF-3A, for the Long March 4 third stage engine, the YF-40.
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  • Long March 1D
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  • Retired
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is maiden flight rocket of
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