Overview
- The F-16 drop validated safe separation and aerodynamics for the Stand-In Attack Weapon and generated data to refine performance modeling across platforms.
- Program officials said the event demonstrates design maturity as SiAW moves toward guided flight trials under Phase 2.1, followed by additional tests and prototype deliveries in Phase 2.2.
- The Air Force plans primary integration on the F-35, and data from the F-16 test supports broader modeling; the service has also indicated the B-21 may carry the weapon.
- SiAW is being engineered to strike time-sensitive, high-value, rapidly relocatable targets inside heavily defended airspace using a precision, survivable approach.
- The missile leverages digital engineering and a Weapon Open System Architecture for faster upgrades, and while some reports label it hypersonic, Northrop Grumman has not confirmed its speed.