Publication Date


Document Type


Committee Members

Nicholas J. Kuprowicz (Committee Member), Rory A. Roberts (Committee Member), Joseph C. Slater (Committee Member), J. Mitch Wolff (Advisor)

Degree Name

Master of Science in Engineering (MSEgr)


The objective of the research presented in this document was to gain an understanding of the feasibility of extracting large amounts of transient shaft power from a variable cycle engine and to reject waste heat into the third stream bypass duct. This first required the development of a transient engine and controller simulation. After performing basic verification of the model, such as ensuring conservation of mass, tests were run for three missions using a low-efficiency periodic load which both required shaft power and created low quality waste heat. The waste heat generated by that load was lifted by a cooling system and rejected into the third stream duct. The impact of the external load and the mission conditions on cooled cooling air behavior and engine performance was assessed. Overall, the engine was capable of performing the missions, providing the required shaft power, and rejecting the waste heat to the third stream.

Page Count


Department or Program

Department of Mechanical and Materials Engineering

Year Degree Awarded