The F-4 Phantom had its first flight in 1958 and the XF108 was cancelled by the USAF in 1959
The USAF did wait for the whole F-4 design from the navy to be complete and said "oh that looks good lets just go with that".
The source-cited excerpts from wikipedia says otherwise:
"649 F-4Bs were built with deliveries beginning in 1961"
"After an F-4B won the "Operation Highspeed" fly-off against the
Convair F-106 Delta Dart, the USAF borrowed two Naval F-4Bs, temporarily designating them F-110A in January 1962, and developed requirements for their own version."
so ... it would appear that the USAF
did wait for the whole F-4 design from the navy to be complete and said "oh that looks good lets just go with that", but this is still not in the same situation we are in with F/A-XX and F-47.
Aside from McNamara's decision making, the Air force also didn't have anything definitively superior in the pipeline to the F4. The air force didn't
give up a design to pick the F4. The air force didnt' spend years on flying demonstrators only to then pick the navy's design at annoucement. They didn't have a good excuse not to accept an F-4. If anything, F-47 and F/A-XX were parallel efforts after the AII demonstrator program concluded and every single time these two programs were spoken of, the navy has expressed priorities and used language to suggest the the air force and the navy are separate and NOT heading in the same direction.
Lets change a few words.
Trump forced the USAF to purchase the F-47 (Which they called something else before Trump introduced his arrogant designation system), they did NOT want to buy a navy fighter.
History repeats itself.
For people who haven't read both threads from start to finish, this is just not true. At no point in time, ever, has the air force or navy suggested that their designs are some variant of each other or closely related enough to be such.
At least there are veritable sources/rumor mills praising the Boeing option as "revolutionary". The source of said rumor was a certain reporter on X and also from the transcript of his interview provided by quellish
here. What the air force has said about the F-47 was that it was the "the best overall value", for which some explanation can be found
here and is not in scope of this thread any longer. Nothing says the air force went for the navy aircraft save for a convoluted reddit post that cherry picks information to fit the narrative (and might quite possibly be your reddit account).
The Air Force's review of NGAD also showed no signs of picking the navy's option or even picking a different vendor as the review was about the right capability and affordability and concluded to continue with the manned component. Might I add that it's highly likely there was already a winner by then. The delay was for whether the program would be cancelled or not by the president and not "which vendor" or "which designs". The air force decided what they wanted and picked the design they thought best. The government had the final say in whether the whole program would be funded or not and that's all that appears to have happened.
To pick the naval design or be forced to do so, the Air force would have had to give up on their own design and apply their requirements to the navy design. Again - unlike the F-4, the air force clearly had it's own requirements and designs in mind. If cancelling F/A-XX made so much noise already, it would stand to reason that the air force would have complained about being forced to give up their own design for the navy's too. It makes zero sense that two "variants" or closely related jets that share majority of airframe AND internals would need two separate programs that have been separated and been undertaken in parallel for almost as long as the NGAD initiative has been a thing.
I've been through this whole thing with you on multiple threads - as have others. You've offered literally zero evidence for your conjectures. What evidence you did offer has not at all definitely justified your conclusions either. If you think people are wrong here, well your conjectures still don't line up with official reporting whereas the conclusions of said senior members do line up or at least don't disagree with official reporting. If somehow your conjectures are right, then theres a whole lot of explaining to do by the government and there ought to be an inquiry into how and why billions for two separate programs just disappeared into one program.
Ill also add that your story keeps changing. First you say that the air force picked the navys design. Then when questioned before, you said Trump forced them to pick the navy design. Why does your narrative keep changing?
With all do respect, would you at least post definitively evidence like reputable articles, quotes, or budgetary data that backs up literally anything you are suggesting?
Now we have senior members on here saying that FA-XX and NGAD "commonality is mostly internal". Back in March the same members were saying both designs were totally unrelated.
This will be just like how the F-35A and F-35C came from the same X-35 ddemonstrator.
You do realize these are not mutually exclusive right? I would expect that planes that share some non insignificant amount of common armaments have the shared internal components like sensors and certain weapon systems. Why wouldnt they? Hell I wouldn't even be surprised if they shared similar shaping and control features, but they can be and are still separate efforts, separate programs and separate designs. Id even go so far as to say that that aviation weekly article is, for all intents and purposes, trash considering the conjectures being made upon a rendering whose origin and intent is unknown. You would need something like the F4 to say "they are variants/ closely related/ airforce picked navy fighter". Not in the least among these differences are the intended power plants for the two fighters.
Now before you start going into how you think adaptive engines are going on navy jets again (which we've already spent like two whole pages talking about in the same thread), let me put a stop to that by reminding readers that the navy has explicitly said its not going with an adaptive cycling engine. If they 180'd, theres also zero reason not to say so. Thats not a difference you can just wave away into a shared airframe. We've heard zero indications of any reversal being considered.