Which aircraft is associated with rotary wing EW?

The AH-1 Cobra is associated with rotary wing electronic warfare (EW) capabilities primarily due to its design and operational role. As a dedicated attack helicopter, the AH-1 is equipped with various systems that enable it to conduct electronic warfare missions, including radar jamming and communications interception. The helicopter's agility and low-altitude capabilities allow it to operate effectively in environments where electronic warfare is critical, providing support and countermeasures against hostile threats.

In contrast, the F-35 and FA-18 are fixed-wing aircraft known for their own advanced EW systems, but they do not fall into the category of rotary wing platforms. The KC-130, designed primarily for air refueling and transport, does not focus on EW as a primary capability. Hence, the AH-1 is the most suitable choice among the options provided for rotary wing electronic warfare.