The US Navy has been laying the ground work for the F/A-XX since at least 2010- but a senior DoD official and a couple of retired Marine Generals are dubious about the whole effort. Read the story here.
The program is currently in the RFI stage (so technically it's not a program yet). The most important aspect of the whole effort is the engine, without which there will be no F/A-XX-- as Rear Admiral William Moran, N98, pointed out a couple of weeks ago at the Navy League convention.
According to this slide from an Office of Naval Research presentation by Rear Admiral Nevin Carr from at the Naval Energy Forum on August 25, 2010, the ONR predicted a Naval Variable Cycle Engine Technology program even back then.
Here is a slide from the presentation:
Click here for a link to the whole presentation
The program is currently in the RFI stage (so technically it's not a program yet). The most important aspect of the whole effort is the engine, without which there will be no F/A-XX-- as Rear Admiral William Moran, N98, pointed out a couple of weeks ago at the Navy League convention.
According to this slide from an Office of Naval Research presentation by Rear Admiral Nevin Carr from at the Naval Energy Forum on August 25, 2010, the ONR predicted a Naval Variable Cycle Engine Technology program even back then.
Here is a slide from the presentation:

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