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Originally posted by COWlan
The millions of times people say about the relationship of J-10 and LAVI, I'm not gonna correct them anymore, believe in what thy want to believe but a simple comparison in specs and capabilities give you the truth about that relationship.
DSI stands for Divertless Supersonic Intakes. The bumps seen at the intakes are litterally called Bumps. At high aircraft speeds through supersonic, the bumps work with forward-swept inlet cowls to redirect unwanted boundary layer airflow away from the inlets, essentially doing the job of heavier, more complex, and more costly approaches used by current fighters. It proved to save significant weight, reduce RCS by concealing the engine's fans which generate most of the RCS when searching from the front. It improves performances both when supersonic and subsonic. The DSI bump functions as a compression surface and creates a pressure distribution that prevents the majority of the boundary layer air from entering the inlet at speeds up to Mach 2. In essence, the DSI does away with complex and heavy mechanical systems.