Anduril unveils Steelfin low‑cost modular interceptor family
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Anduril announced Steelfin, a family of surface‑to‑air interceptor missiles designed to engage attack drones, cruise missiles, ballistic and hypersonic threats, using a two‑stage design with a common booster and terminal interceptor that share structure, avionics, software, flight controls and interfaces.
The system can be configured for Patriot PAC‑3 missions delivering about 80% of capability at less than half the cost, for higher variants covering THAAD missions at a fraction of price, and for naval use offering over 80% of SM‑2 capability for a third of cost; it is intended to use existing launchers such as Patriot’s M903A2, the Mk 41 vertical launch system and the Typhon ground launcher, with integration envisioned for AEGIS and IBCS, and flight tests are planned for 2027 after ballistic tests, with production projected at several thousand interceptors per year.