Guys, if you look at RSAF ORBAT, then you will realise that RSAF
constantly maintain 3 types of platform, with 1 outgoing/phasing
out, and the other as replacement.
Generally, there will be 1 type dedicated for strike and maritime
roles. This has been fulfilled by the Skyhawks till now. One type
to fulfil the interceptor/fighter with secondary strike role. This
is currently fulfilled by the F-5. The last, being the multirole
and probably supposed to be the best air asset (or what I'll call
RSAF air superiority fighter). This is currently the Vipers in the
inventory.
Looking at things, the Vipers are earmarked to replace the Skyhawks
in the strike, interdiction and maritime role. The NGF will be
purchased to fulfil currently Viper's role. and in the future, the
JSF will replace the NGF role while the NGF will replace the F-5
fighter/interceptor/secondary strike role.
Basically, the trend started in the 80s, with the
F-5 being the (top air superiority fighter for RSAF), the Hunter
playing the inteceptor/fighter/Recon with secondary strike role,
the the Skyhawks, the dedicated strike aircraft.
Came the 90s, where the Viper became the air superiority fighter,
the F-5 upgraded and replacing Hunters, the Skyhawk upgraded to
continue its role.
Come the new Millenium, we will see the NGF taking over the Vipers
as the air superiority fighter, the Viper taking over the Skyhawk,
and the F-5 remain where it is.
Come post 2010, we will see the F35 taking over NGF, NGF taking
over the F-5's role, and the Viper (possibly upgraded) remain
predominantly for strike roles (being the most numerous type just
as its predecessor - the Skyhawk).
Sounds logical?
