Overview
- An Air Force spokesperson confirmed on Tuesday that the Hypersonic Attack Cruise Missile had a flight-test release in Australia under the U.S.–Australia SCIFiRE partnership.
- Officials declined to say when the release occurred, which aircraft carried the weapon, or whether the missile’s scramjet achieved sustained powered flight after booster separation.
- HACM is a two-stage design that uses a rocket booster to accelerate a scramjet-powered cruiser intended to sustain speeds above Mach 5.
- The program has slipped from its original schedule, cut its rapid-prototyping flight campaign from seven tests to five, and faces tight timing as the Air Force pursues a rapid fielding decision for fiscal 2027 with about $1.2 billion sought for maturation and initial procurement.
- Analysts caution that beyond engineering milestones the missile’s battlefield value will depend on survivable forward basing, hardened infrastructure and resilient targeting networks to keep the weapon's kill chain intact under long-range adversary strike.