| Hypersonic Attack Cruise Missile (HACM) | |
|---|---|
 HAWC missile render, the preceding program for HACM | |
| Type | Hypersonicair-launched cruise missile |
| Place of origin | United States Australia |
| Service history | |
| In service | In development; in service from FY2027 |
| Used by | United States Air Force Royal Australian Air Force |
| Production history | |
| Designer | RTX Corporation Northrop Grumman |
| Specifications | |
| Engine | Scramjet |
Operational range | 1,000 nmi (1,900 km)[1][2] |
| Maximum speed | Mach 8 (2.7 km/s; 9,800 km/h; 6,100 mph)[2][3][4] |
Launch platform | F-15E Strike Eagle[5] F/A-18F Super Hornet[6] EA-18G Growler[7] F-35A Lightning II[7] P-8A Poseidon[7] |
TheHypersonic Attack Cruise Missile (HACM; pronouncedHack-em[8]) is an Australian-Americanscramjet-poweredhypersonicair-launched cruise missile project, the successor of theHypersonic Air-breathing Weapon Concept (HAWC) and theSCIFiRE hypersonic programs.[9]
Technology developed for the HAWC demonstrator was used to influence the design of the HACM, aU.S. Air ForceProgram of Record to create a scramjet-powered hypersonic missile it could deploy as an operational weapon.[10]
In Australian service, the projectile will become the fastest missile Australia has ever operated, and the first hypersonic missile.[citation needed]
In December 2021, Raytheon Technologies was awarded a $985 million contract to continue its HACM development.[11]
The contract to develop HACM further was awarded toRaytheon in September 2022.[12] HACM will use aNorthrop Grumman scramjet.[13][14] It is designed to be smaller than theAGM-183 ARRW and able to fly along “vastly different trajectories” than the boost-glide ARRW.[15]
The system will give the US military "tactical flexibility to employ fighters to hold high-value, time-sensitive targets at risk, while maintaining bombers for other strategic targets."[5][16][17][18] Following the U.S. Air Force's decision to not pursue procurement of ARRW in March 2023, the HACM became the service's only hypersonic weapon program.[19] Though the USAF confirmed that they would not be purchasing any hypersonic weapons in FY 2024, the budget request for the upcoming fiscal year includes $380 million for R&D on the HACM,[11] followed by a proposed $517 million in FY 2025.[15] The United States hopes to have the missile in operational capacity by FY 2027.[20]
TheUnited States Air Force has stated that Australian testing facilities will be used for testing of HACM.[20][21]
In Australian service, the projectile will become the fastest missile Australia has ever operated, and the first hypersonic missile.[citation needed]
In June 2025, it was revealed that the program was behind schedule, and the number of tests before entering service would be limited. Prior to his announcement, it had been reported that the missile was actually ahead of schedule.[22]
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