India’s Military Aerospace Manufacturing Ecosystem

India’s military aerospace industry has reached an inflection point: a 1,500+ aircraft-and-helicopter procurement pipeline worth roughly ₹2,50,000 crore over 2025–2035, a private-sector prime layer that can now build (TASL’s C-295, HAL’s Tejas and rotorcraft, Mahindra, L&T), and policy tailwinds from the 75% domestic capital earmark and five positive-indigenisation lists. Yet the sovereignty question is unresolved below the airframe: India imports 85–90% of aircraft-engine value and depends on foreign supply for single-crystal turbine blades, FADEC, aerospace-grade semiconductors, AESA T/R modules and superalloys. This report maps the full ecosystem — the 16-subsystem architecture, the prime and Tier-1/2/3 supplier network, eleven ₹1,000 crore-plus opportunity surfaces, the critical-dependency chain, and a three-scenario 2035 outlook (Assembly Nation, Deep Localisation, Indigenous Stack) separated by whether India invests in the layers it does not yet own. It prescribes the capital, the certification capacity and the engine programme required to move from assembly to genuine industrial sovereignty.