For the same reason that the K-8s in the PAF are not flying with a Chinese engine. Only last year was the WS-13 being tested on an FC-1 when the PAF had JF-17s operational.
Either ways Its going to affect the Chinese market.
Today China wants to field its own fighter planes for export which are in competition with Russian planes and making inroads in the traditional Russian market.
At 1st the Russians won't be comfortable with Chinese opening up their engine as they have been notorious for RE jobs.
2ndly the Chinese would send a wrong message promoting the Russian engine instead of their own... affecting its turbo-fan industry.
It does not. All press releases have been that RD-93s have been exported to China and China has been allowed to re-export. SIPRI does have Pakistan receiving RD-93s but I suspect China has to declare the end user (Pakistan), hence SIPRI reports that the engines were exported to Pakistan.
That only increases the cost of the engine for PAF... and unnecessary delay... aswell as dependence on Middle man.
Even that, with the way PAF is very much part of FC-1, nothing stops China transferring the know-how to over-clock the engines. I.e. PAF might be over-clocking the engines too on their own.
As stated above... the obvious reasons... besides overclocking or underclocking affects the performance of engine accordingly.
And to add on that.. PAF playing with the new plane and new engine so early might bring out unwanted results... Don't compare PAF with Germans here.
How many MiG-25 operators are there outside Russia? ... ... and you are saying they don't run their fighters on AB when necessary because it ruins the engines?
Yes they avoid going to the red mark on their meter as to save their plane during peace time.
When life and death situation arises they certainly do that.. however that usually happens in case of war.
For all training and peacetime operations the JFTs don't necessarily have to run at the over-clocked setting. But in a war, if over-clockit is going to with the war, than every RD-93 will be overclocked.
But you have already configured the engine in this case.
In war time however dependence on middle-man and import/overhauls of engines for the main combat aircraft at regular intervals would affect the performance of PAF.
I am not saying they are over-clocking, but I see it as very possible and making all the sense.
Offcourse.
However there are both advantages and disadvantages while doing such things... and it doesn't go right always.
its not fully reliable. how many times it should be repeated here!
I was saying in context of future scenario... 2-3 years and beyond when JF-17 becomes main/front line fighter aircraft for PAF.. and Chinese starting to look for the market for its WS-13.
Today 30-40 planes are not much of an issue... even flying hours would be less due to absence of weaponry like BVR and Targetting pods etc... not much combat load.
