Does the F-15N design study show that a naval F-15 was a practical conversion?
Short answerA study alone does not establish that; repeated carrier landings would require extensive airframe redesign.
NotesConverting the F-15 for carrier service would require rebuilding its airframe around the loads of deck landings. Even a purpose-built carrier aircraft experiences severe structural wear during those landings. A company can advertise a naval version before completing the engineering needed to make it practical, using the proposal to seek development funding. The criticism of the F-15N proposal concerns how much engineering lay behind the offer: a brochure establishes less than a detailed design study.