Mani2020
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blk 2 for now will have rd-93, ws-13 needs more time to fit in JFT but i believe it eventually will be be fitted.
Then what will be the benefit of fitting WS-13 if its going to arrive on the scene too late. 50 thunders are stated to be from block-1 configuration after then block-2 will start to roll out , suppose the first 2 squadrons of block-2 house RD-93 engine...it then makes to the total thunder with rd-93 engine to be somewhat in the range of 85 aircrafts ....~As 25% cost of total aircraft belongs to the engine...means not only throwing 25% the cost incurred on rd-93 but also the expenses incurred on buying ws-13 to swap the engines from these 85 planes ...that makes it too expensive deal that too for a cash strapped country....
And suppose even if they don't replace the rd-93 engine from initial 85 aircrafts and go with ws-13 from the 86th aircraft that means two different engines for same aircraft adding to cost of maintainance and headache means deviating from the original goal that was....to be cheap,effective and easy to maintain ....also what about the rest of RD-93 that were ordered from Russia through China?
The only thing we can do with these RD-93 is to house them on exporting aircrafts but that only for the new ones that came from russia and still haven't found a place in any thunder...what about the rest 85 engines that will be used on initial thunders...will any country agree to buy used ones ....knowing the reduction in their life-time and overhaul time...even if they come at cheap price
The solution can be modify the current RD-93 engines to increase their thrust ....Recently Pakistan-Russia relations are taking a good turn so why not utilize this change in tide to your benefit .....and even if Russia doesn't allow so use Chinese influence or go to Ukraine for help