ChangZheng 4B

The ChangZheng 4, CZ-4 or Long March 4 in English, is a three-stage liquid propellant space launch vehicle family developed by the Shanghai Academy of Space Flight Technology (SAST) in support of the People's Republic of China (PRC) space program. The CZ-4 launcher was designed in the1980s to place satellites into polar and sun-synchronous orbits (SSO). The launch vehicle is based on the FengBao-1 two-stage rocket. The ChangZheng 2, 3 and 4 space launch vehicles are scheduled for replacement by the heavier ChangZheng 5 after 2014. The ChangZheng 4A made its first flight successfully on 7 September 1988. It is capable of delivering a 1,500 kg payload into Sun Synchronous Orbit (SSO). The ChangZheng 4B was developed in the 1990s and made its first flight in 1999. It is capable of delivering a 2,200 kg payload into Sun Synchronous Orbit (SSO).

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