Development of propulsion technology for Chinese manned launch vehicles

The history and newly progress of main space powers in the area of space launch vehicles and their propulsion technologies are reviewed.The state-of-art and future developing ideas of propulsion technologies in the United States and Russia are analyzed emphatically.Comparing with differential technologies and propulsion levels of current popular launch vehicles,the developing trends of world space launch vehicles and their propulsion systems are summarized,and suggestions on developing advanced propulsion technologies for Chinese manned spaceflight launch vehicles are made.