Kersi D wrote:Perhaps, before we go into engines, we need to define what SORT of plane we want, yes? And not just a candy-shop wish-list of attributes: what sort of plane will we need, say in a 2025-2050 time period?
I'm putting down what I think - gurus, anyone else with an opinion, feel perfectly free to disagree
I'm guessing we're going for a Hi-med-lo lineup (especially towards the end of that time-frame, when hopefully we'll come down to fewer types of fighters), with the FGFA/PAK-FA as hi, the LCA (2/3, whatever) as lo and this new fifth-gen plane as the medium level. It'll be used both by the IAF and IN (and hopefully by the IN-Marine Corps that I hope will be formed). It'll be expected to operate on its own as well, but its major role will be as a strike platform to go in under the umbrella of the FGFA.
What I'd look for (personally at least):
1) Stealth - obviously, but not like the F-35, where agility and payload are compromised for LO. the approach would have to be more like the FGFA - a good degree of stealth, but within a very agile airframe.
2) Supercruise
3) STOVL/VTOL or at least very short take off and landing ability
4) Unprepared runway ability + easy maintenance - I envision a lot of forward-base use
5) Internal weapons bays DESIGNED to take projected weapons (unlike the F-35, which can't take the Meteor)
6) AESA radar + IRST, other sensors + data sharing ability with new-age ground/space-based sensor systems to tackle stealth and aim standoff weapons
7) The general characteristics of a strike fighter, ie decent payload, good range, good stability
What else?

Plenty. 8 - 10,hard points
9) A good internal gun with plenty of ammo, not the 70 rounds which were carried by some USSR ac, SU 7, I think
10) Built in laser range finder, target designator
11) Single engine for "low end" ac, twin engine for "med end"
12) In flight refuelling as well as buddy refuelling
Is supercruise really required ? It may be difficult to have a VTOL ac, rather the ac should be suitable for STOL from makeshift runaways.
I suggest that there should be 2 types on the same platform, one for air defence / intercepter / CAP etc and another for ground attack
K