They already have an SU-57 Felon operational. And a couple of more being built. Don’t put it past them to produce a copy of the Checkmate as well. Series production, not so much, if the Felon is any indication.
And even if they don't have the capability of fabricating chips with the current world record line widths, I'm sure they can develop and fabricate computer chips that are acceptable for putting together the electronics for a fighter jet.
Being part of the BRICs, they can get all the raw materials they need for building airframes, etc.
And their spy network is still operational and capable of getting designs from the US, UK, and China if/when necessary.
Russia wants to build a new stealth fighter. Laugh with me, please.
————
As Russia is proving “war” is now waged in a much different manor. Russia has dethroned the USD, brought the EU to its knees and is crippling the West, not on the battlefield, but on the economic markets.
Citizens facing food shortages, unbelievable inflation, energy shortages,…always end up in government downfalls. Ironic, Vlad is taking down the West by the same means the West THOUGHT it could take down Russia.
Meanwhile, Vlad now controls 30 percent of Ukraine, and moves forward everyday ( getting richer), while the EU is being crippled… all with older equipment. The West can do nothing about it, except shutdown their economies and freeze…
Russia is need of nothing, food, water, gas, diesel, NG, commodities, metals…everything the West needs.
Speculation best served hot to fools and idiot armchair generals. Bet.