Abstract:
A method of configuring a plurality of substantially mutually distinct gas turbine engines includes the steps of providing each of the engines with respective ones of a plurality of substantially mutually distinct propulsors. Each include a fan and a fan drive gear architecture. Each of the engines is provided with respective ones of a plurality of substantially mutually alike gas generators, each with a compressor section, combustor, and a turbine section configured to drive at a common speed. The plurality of mutually distinct propulsors have a mutually distinct diameter fan and/or fan drive architecture with distinct gear reduction ratio.