Long March 3C/E

The Long March 3C/E is a three-stage launch vehicle and member of the Long March 3 rocket family. First launching on 23 October, 2014, it is the enhanced version of the Long March 3C rocket. It is capable of putting 8,000 kg into low-Earth orbit.

Boosters
The first stage is supported by two strap on boosters, each 16.1 m in length and powered by YF-25 engines. The engines run on dinitrogen tetroxide (N2O4) and unsymmetrical dimethylhydrazine (UDMH), each producing 740.4 kN of thrust. The boosters burn for 140 seconds.

First Stage
The first stage has four Y4-21C engines which, like the YF-25 engines on the boosters, run on N2O4 and UDMH. The first stage burns for 158 seconds and produces 2,960 kN of thrust. It is 24.7 m in length and 3.35 m in diameter.

Second Stage
The second stage has a YF-24E engine module. The module contains one main YF-24E engine for thrust, and four YF-23C verniers. The main engine produces 742 kN of thrust while the verniers each produce 47.1 kN of thrust. Just like the booster and first stage engines, these run on N2O4 and UDMH. This stage is 12.9 m in length and 3.3 m in diameter and burns for 185 seconds.

Third Stage
The rocket’s third stage has a single YF-75 engine which run liquid hydrogen (LH2) and liquid oxygen (LOx) and produces 167 kN of thrust. The stage is 12.3 m in length and 3 m in diameter, and burns for 487 seconds.