Installation Effects on the CF6-50 in the YC-14 Aircraft

Design of the YC-14 over-the-wing nacelle, utilizing the CF6-50D engines, presented unique engine installation conditions which have been accommodated with very minor impact to the baseline commercial engine design. Major installation features which affect the engine are reviewed including engine mounting, engine/aircraft deflections and nacelle sealing, effect of the confluent-flow exhaust nozzle on engine cycle matching, and inlet/thrust reverser/engine compatibility. Design solutions and planned testing to evaluate the installation are discussed.