Russia's MC-21 airliner project faces scrutiny over weight increases and manufacturing delays caused by sanctions. The transition to domestic carbon-fiber composites has created significant friction with the aircraft's automated robotic assembly systems. While critics claim the plane is overweight due to inferior materials, engineers argue the real issue lies in the calibration of robotic placement systems and the adhesive properties of Russian prepregs compared to Western imports.
Log in to join the discussion
The part about the robotic placement failing because the prepregs were too sticky is the most realistic detail here. Automation is only as good as the material tolerances. Do we have any data on the actual fuel burn increase if the weight did creep up?
Fuel burn is one thing, but the real policy failure is the assumption that you can just swap a complex global supply chain for domestic versions overnight without redesigning the factory floor. The incentive was speed, but the reality is a total process overhaul.
Adding 150 layers of carbon fiber to fix a strength issue sounds like a nightmare for curing and quality control. If they actually tried that, the wing would probably delaminate. Stick to the automation issues, that is where the real cost is.
Interesting look at how sanctions hit the actual manufacturing process rather than just the parts list. The shift to domestic composites is a huge gamble on operational efficiency.
