Official name SZ-4
Alternative name Shenzhou 4
Cospar ID 2002-061A
Norad ID 27630
Launch date 2002-12-29
Launch site JSC
Launch vehicle CZ-2F
Country/Organization China
Type application Crewed spacecraft
Operator CNSA
RCS size LARGE
Decay date 2003-01-05
Shape Cyl + Cone + Cyl
Mass (kg) 8400
Diameter (m) 3.2
Height (m) 10
Span (m^2) 10
Propulsion 4 × retro motors
Configuration Service module, Return module, Autonomous orbital Module
Power 4 deployable solar arrays, batteries

The SZ (Shenzou) is the first crewed spacecraft of the Peoples Republic of China. It owns much of its basic design to the Russian Soyuz capsule, which has a very similar genaral layout. Like the Soyuz, it consists of an orbital module, a return module and an engineering module. Although technology transfers from russia may have had influences in the design of the space craft, the SZ seems to be an mostly independent development.

Unlike the Soyuz, the SZ's orbital module has the capability of a free-flyer, which continues its mission after the deorbiting of the return capsule. In the first 6 missions, the orbital modules contained instruments for Earth observation. The SZ 7 orbital module is modified, featuring no solar arrays, but handrails for EVA, more gas containers and a deployable subsatellite.

The flight of SZ 2 ended possibly in failure, as no images of the return module were published in press, but SZ 1 and 3 returned succefully to earth. The flight of SZ 4 ended successful with the landing on 5. January 2003. Shenzou 5 carried the first chinese astronaut ('Taikonaut') Yang Liwei into orbit on 15. October 2004. Shenzou 6 was the first chinese flight with two Taikonauts. Shenzou 7 featured China's first spacewalk.

Satellite COSPAR Date LS Launch Vehicle Remarks
SZ-1 1999-061A 1999-11-19 JSC CZ-2F
SZ-2 2001-001A 2001-01-09 JSC CZ-2F
SZ-3 2002-014A 2002-03-25 JSC CZ-2F
SZ-4 2002-061A 2002-12-29 JSC CZ-2F
SZ-5 2003-045A 2003-10-15 JSC CZ-2F
SZ-6 2005-040A 2005-10-12 JSC CZ-2F
SZ-7 2008-047A 2008-09-25 JSC CZ-2F with BanXing