Design and Development of the Garrett F109 Turbofan Engine 891046

The F109-GA-100 engine, flat rated at 1330-pounds thrust at sea level static maximum power conditions, was developed to address the United States Air Force need for a new primary trainer. As such, it required very low fuel consumption, high reliability, and ease of operation. This paper describes the development program and highlights the Engine Structural integrity Program (ENSIP) approach to the design and the Accelerated Mission Test (AMT) approach to testing, both of which are new approaches to engine development. Solutions to problems encountered are discussed, and a summary of flight test experience is included.


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