The ideal aircraft folds to less than 52ft long and less than 22ft wide.
Should nose not be folded it must be below 56ft length.
Thus ideally three aircraft wide in the hanger of 65ft width.
It will use two turbojets or later turbofans of 6,000lb + and reheated thrust of 11,000lb + s.f.c should support the desired CAP and engine performance support both rapid throttle changes and level flight above 50,000ft and speeds above mach 2.
It's All-up Weight is below 35,000lb and it's Fighter weight is below 38,000lb. Strike with 4,000lb of stores will be below 40,000lb.
It's initial rate of climb is above 40,000ft/min.
Ceiling of over 60,000ft
Maximum speed at the tropopause is mach 2+ and above mach 1.1 at sea level.
CAP endurance of 2 hours plus normal reserves for combat and recovery.
ROA lo-lo-lo over 200nm with a tactical nuclear weapon.
ROA hi-lo-hi over 400nm.
It will be stressed to take 8g in air-to-air combat.
With appropriate spool attachements and tail hook for catapult launch and arrestor recovery. It should be operable at the required weights from the 151ft stroke catapult and recovery at 120kts or less at weights below 30,000lb.
It will be available in twin seater though a single seater for fighter only under GCI of CCI/AEWC is acceptable if highly compatible with twin for strike.
Aircraft will have AI set compatible with SARH guided and IR guided AAMs. Data link for auto-intercept.
Ideally it will also support low level flight and LABS delivery. As well as sea search functionality.
INS.
TACAN
UHF
VHF
Mk10 IFF.
Radar altimeter operable land and sea.
Nuclear weapon systems.
Additional space for further electronics for air-to-surface guided missiles. ECM and or EW equipment.
A photo reconasense pack should be available.
30mm ADEN cannon should be available.
Within these requirements a degree of flexibility ought to be accepted in one or more areas.
Such as:-
A single large engine.
Maximum speed down to mach 1.8
Max weights to 50,000lb.
Accepting WOD + ship speed is necessary to launch and recover. Alternatively increasing catapult stroke length to 177ft and arrestor recovery limit to 35,000lb
G limits to 7g as a fighter and lower for strike.
Folded span to 28ft. (Two per 62ft wide hanger).
Ceiling to 58,000ft
CAP with one or more drop tanks of upto 300 gal.
I have not finished writing this specification. But you get the gist I hope.