Traditional books on aircraft propulsion for engineers tend to only address the thermodynamics and fluid mechanics necessary for static design of jet engines. But the thrust response to throttle inputs is crucial to pilots in critical flight stages, such as low-level wind shear encounters, go-around, and missed approaches. In addition to the fundamentals of thermodynamics, combustion, fluid mechanics, turbomachinery and gas dynamics, this book also discusses the critical issues surrounding the dynamic behavior of jet engines. Several mathematical models are presented which describe the temporal and the frequency response of single- and multi-spool compressor-turbine systems and delayed thrust response.