shiv wrote:What he said is nonsense Karan. Fighters can be based a hundred or two hundred km in India , take off with very little fuel but a full load, get refuelled well within the border and go into enemy territory for a mission and then if necessary be refuelled again in safe airspace over sea or land. Even Wiki has this information. Needing more refuellers for that is fine. But certainly not for sending them over hostile territory with escorts.
We can send refuellers over Pakistan provided we manage to secure Air Dominance but its definitely a risk, hoping the PAF does not get some mobile SAMs into the area.
Refuellers are precious assets. It is always good to have "more" of precious assets it they are used properly. How will they be used with regard to conflict with Pakistan or China? One thing I can tell you for sure they won't be sent to loiter over enemy territory.
With most Pakistani targets being within 300 km exactly how will "more refuelers" be used wrt to Pakistan? And how will "more refuelers, or (even the existing ones) be used over Tibet?
It doesn't matter if Pakistani targets are within 300 km or not because more fuel available = more loiter as I mentioned. More loiter time available = more responsive air power on call. This could be to the sectional level for supporting infantry - the French & US have adopted this system called Rover, which allows them to directly link with fighters on station (since we are getting either the EF/Rafale for MMRCA the tech is not out of our reach).
And another - missile busting. Personally, I believe the IAF should seriously start looking at the latter if it already has not. This is the single reason why personally I support the Rafale over the EF though I like the latter far more. The former aircraft has significantly more endurance & hence loiter. Basically persistence over a combat zone is the way to dominate the enemy, the more endurance it has, the less sorties one needs to surge to achieve any sort of reasonable coverage over the combat area. For a two front scenario, if it ever occurs, with fewer airframes available, this will be even more critical.
By conventional standards, and most of its peer fighters the Sukhoi is indeed very long legged, making it a quasi-strategic asset. But the oft quoted 3000 km range comes with some significant caveats.
http://sukhoi.org/eng/planes/military/su30mk/lth/
Maximum flight range (with rockets 2xR-27R1, 2xR-73E launched at half distance):
- at sea level, km 1,270
- at height, km 3,000
Note the limited payload & that its launched (reducing the drag) at half the distance giving a max range of 1500 km.
If we actually maintain a heavy CAP (with the aircraft armed to the teeth - it can carry upto 12 AAMs) or an escort, or for that matter a mixed package, say a mix of dumb bombs, LGBs, A2G missiles and some 4 AAM for self defence, plus EW pods - the fuel burn will be much higher. Especially considering aircraft has to be at military power to reach the area of operations quickly & then settle into a slower circuit but probably not as optimal as cruising speed.
Basically - we do need tankers, more fuel - the problem is the more the internal fuel, the bigger the plane & lesser the aero performance, you know this. For fighters, the way around this - to increase the fuel fraction without compromising on the performance too much - is to add fuel tanks. But even there, its a slope. Add too large tanks - and a portion of the fuel goes in having these tanks to begin with (drag). So the new wisdom - CFTs (which compromise fighter performance) and tankers. The last are evergreen and hence why the USAF - which truly believes in air dominance and lives and breathes it (their ground forces don't have as significant SAM defences) stresses so much on tankers. Its all about persistence.
The other problem is fancy stuff apart, fighters themselves are not the answer by themselves - they have to be tied into a sensor network with other aircraft with large radars with A2G modes (a fighter radar has limited FOV) - eg SAR, GMTI (to detect moving targets) and geolocation - to get the kind of wide area coverage of targets - that fighters can then attack. By acquiring UAVs and gradually moving up the value chain, adding the sensor -data exchange networks (IACCS, AFNET) the IAF is moving towards this arena. But this complex process means that the fighter has to be around a long time, again loiter. It has to wait till it gets the data it needs.
This is how war is increasingly being fought and its a big issue for us, because we face persistent threats that make even what the US faced as simple. We need high endurance fighters with excellent sensors and a NCW approach running, with as many force multipliers as possible. Since all this is not possible (we only have a handful of tankers, handful of AWACS), the IAF is doing what it can - close basing, choosing aerostats (cheap alternative to AWACS albiet with disadvantages) etc.