The U.S. Air Force successfully released its new Stand-in Attack Weapon (SiAW) from an F-16 over the Gulf of Mexico on Nov. 7. The test, involving a jettison test vehicle (JTV), marked the first time the SiAW separated from an aircraft. The JTV lacked a rocket motor and internal electronics, focusing solely on the weapon’s safe separation from the aircraft.
The SiAW is an air-to-ground weapon under development for the U.S. Air Force, designed to address capability gaps in striking from sanctuary and enhancing weapon survivability. It is also specifically designed to be compatible with the F-35A. The weapon is being developed to engage rapidly relocatable targets, including cruise missile launchers, anti-ship missile launchers, and jamming platforms.
The SiAW program is managed by the Air Force Armament Directorate. Northrop Grumman was awarded a contract in September 2023 to develop, integrate, and test the weapon, with an initial operational capability targeted for 2026. The contract awarded to Northrop Grumman is valued at approximately $705 million.
This test represents a critical step in the development of the SiAW, paving the way for further testing and evaluation. Engineers will now conduct post-flight analysis of the data collected during the test. The Air Force is leveraging digital engineering, open architecture interfaces, and Weapon Open System Architecture (WOSA) to accelerate the weapon’s development and ensure its adaptability to future threats. This approach will allow for rapid prototyping and fielding of the SiAW by 2026.
This milestone test brought together various units of the 96th Test Wing to coordinate, monitor, and execute the mission. Test conductors controlled the mission from the Eglin Central Control Facility. Pilots and photographers documented the event, capturing aerial footage of the separation.
“Successful execution of this test was a testament to the outstanding teamwork from everyone involved,” said Maj. James Tipton, 780th Test Squadron assistant director of operations. The SiAW is expected to significantly enhance the U.S. Air Force’s strike capabilities against evolving threats.
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