zen said:
I imagine that it's solve able by the application of more metal. But of course that adds weight.
Another thought is the heat and vibration issues are mostly connected to low speeds such as at take off.
But up high and fast the effected zone behind the jet pipe is much narrower and the tail wouldn't impinge into it.
My recollection/ understanding was that the heat and vibration issues could only been resolved by a very comprehensive (resource and time consuming) redesign and restructuring (a lot more titanium and/or steel).
And that super-Sonics Vixen were judged to be a waste of the time and resources and very much second best versus to fresh-sheet designs.
An subsonic Sea Vixen developments beyond the Mark2 never had any real chance of getting made.
There was no Sea Vixen development that wasn’t substantially inferior to the F-4 airframe.
And that’s before you get into the very substantialy inferior UK radars and missiles (shockingly so at this time) versus their US equivalents, as carried by the F-4.