This course describes the multiple sources of propulsive force. It begins with an introduction to aircraft propulsion system and its historical background. In details this course includes the review of thermodynamics and fluid mechanics and fundamental of gas dynamics. Propulsive power analysis starts from piston engines, shaft and thrust power, and cycle analysis using air standard with friction. In addition, turbojet engine cycle, turbofan engine cycle, gas turbine engine components and their functions such as compressor and turbine velocity diagram analysis, and turbine blades cooling techniques. Finally, the gas turbine emissions and chemical rocket engines analysis were embedded in this course. This course is a blended course that combines traditional teaching methods, active learning to Problem-Based Learning approach based on real problems of aircraft propulsion system.