What makes the range of MKI much greater than that of other Su-30 variants (say MK-1)?
I know there are some structural changes in the airframe of MKI including use of composites but the difference in their max range is huge.
Does AL-31FP guzzles much less fuel as compared to AL-31F?
Or is there some significant change to the airframe that I have missed?
I apologize if this has already been discussed. If so, could someone please direct me to the right location?
Where exactly do you get the "huge" difference in range from? Can you please post a source? Current open sources tend to show range figures between the MKI and MK versions to be almost exactly the same - 3000km hi alt range on full fuel tank (10tons for mki and 9.4 to 9.6 for MK versions). Note the MKI is given as a much heavier fighter - 18400kg+ considering it has TVC and canards.
The MKI has much larger fuel storage capacity. The fuel tanks extend into the tails. If composites are extensively used and contribute to a lesser weight, this could also translate into larger range
Gagan,
The MKI does have a greater fuel storage capacity, but the difference of about 500kg of fuel is offset in by the extra weight of the MKI. Also, where did you get the idea that the MKI has tanks in its tails. IIRC only the original Su-35UB (the original triplane config. circa 1994) had these and the capacity was 10250kg, it had a range of 3200km on full internal fuel - 10tons. Btw, re. composite use on the mki, last i read was about 6% by weight (not that great, but better than the original flankers which did not use composites and relied on titanium alloys).
Guys, all of the above is from open sources - Fomin to Sukhoi's and Knaapo and Irkut's current websites. Do cite and link sources to the questions I raised as I too would like to know. Unless you guys know something that is simply not open source, do enlighten as to how there is a "huge" difference in range between various flanker variants, thx.
And no, don't give the BR MKI link as a source, I had brought this up earlier but the range figures on the MKI seem ridiculously high - 3000km on normal internal fuel would mean that it would fly further than an EF-2000 (with much smaller engines and lesser weight) on the same amount of fuel (5200kg) - sort of far fetched imho. The MKI @ NTOW weighs a nice 25 - 26.5 tons. the Ef-2000 with 5000kg fuel is cited to go about 2500km clean. The F-18E/F with full internal fuel (6500kg) goes about 2300km clean, the MiG-35 with 5500kg about 2200km. All the abovementioned smaller a/c weigh around 17-20 tons with ~ 5000kg fuel. Bu the MKI which weight a good 5-8 tons more flies a solid 500-800km extra with the same amount of fuel? I call it miracolo!
The most a flanker did was about 4000km on a v.special mission iirc.
CM.