HH-60W and HH-60G Helicopters Undergo Maritime Countermeasure Tests for Enhanced Survivability

The U.S. Air National Guard and Air Force Reserve conducted the first maritime environment test of their HH-60W Jolly Green II and HH-60G Pave Hawk helicopters, focusing on the performance of their defensive countermeasure systems. These systems, which include flares, chaff, and advanced radar and missile warning sensors, were evaluated against simulated modern aerial threats represented by F-15D fighter jets. The test took place over open waters, providing a realistic and challenging backdrop for assessing the helicopters’ survivability in high-risk rescue missions.

HH-60W Jolly Green II. Photo: acc.af.mil

The primary objective of the trial was to determine how effectively the helicopters’ self-defense systems could operate during combat search and rescue missions in maritime regions. This included examining the impact of humid, salt-laden air on the reliability and responsiveness of the countermeasure equipment. By replicating the environmental and tactical conditions of potential real-world missions, the test aimed to provide data that could directly influence operational readiness and mission success rates.

Participating units included the 129th Rescue Wing, the 305th Rescue Squadron, and the 144th Fighter Wing, each bringing specialized expertise to the exercise. The Naval Air Warfare Center at Point Mugu provided critical maritime range facilities and operational support, ensuring the test environment met the necessary safety and realism standards. Modern Technology Solutions Inc. (MTSI) contributed advanced electronic warfare analysis, enabling detailed evaluation of system performance against simulated threats.

The HH-60W Jolly Green II, the newest variant in the U.S. Air Force’s combat rescue fleet, is based on the UH-60M Black Hawk platform but incorporates significant upgrades. These enhancements include extended range, improved endurance, advanced avionics, upgraded armament, and enhanced crew protection features. The HH-60W is gradually replacing the older HH-60G Pave Hawk across multiple units, offering a more capable and survivable platform for personnel recovery missions in contested environments.

During the test, the helicopters executed a series of tactical maneuvers designed to trigger and evaluate their defensive systems under realistic threat conditions. Flares were deployed to mislead heat-seeking missiles, while chaff was released to disrupt radar-guided threats. The radar and missile warning systems were monitored for detection accuracy, reaction speed, and integration with the countermeasure deployment process.

The HH-60W Jolly Green II is equipped with an advanced suite of defensive systems designed to enhance survivability in hostile environments. Among its key features is the AN/APR-52 Radar Warning Receiver (RWR), which provides the crew with early alerts of radar emissions from potential threats, allowing them to take evasive action or deploy countermeasures. This capability is critical for missions in contested airspace, where rapid detection and response can mean the difference between mission success and failure.

Complementing the RWR is the AN/AAR-57 Common Missile Warning System (CMWS), a sophisticated sensor network that detects incoming missile threats by identifying their infrared signatures. Once a threat is detected, the system automatically cues the appropriate countermeasures, giving the crew precious seconds to react. This integration of automated detection and response significantly reduces the workload on pilots and crew members during high-stress combat situations.

The HH-60W also features the AN/ALE-47 Airborne Countermeasures Dispenser System, which can deploy flares, chaff, or other expendable decoys to confuse and divert enemy missiles. This system works seamlessly with the RWR and CMWS, creating a layered defense that maximizes protection against a wide range of threats. Together, these technologies ensure that the HH-60W Jolly Green II can operate effectively in dangerous environments, safeguarding both the aircraft and its crew during critical search and rescue missions.

The maritime setting introduced additional complexity, as the helicopters had to contend with environmental factors that can degrade sensor performance and countermeasure effectiveness. Saltwater corrosion, high humidity, and the reflective properties of the sea surface can all interfere with radar signals and infrared detection. Testing in this environment ensured that any vulnerabilities could be identified and addressed before actual deployment in similar conditions.