The U.S. Air Force is testing drag-reducing devices called “Finlets” on MC-130Js with the goal of improving the transport aircraft’s fuel efficiency and range.
Officials at Eglin Air Force Base in Florida said the 3-D-printed Finlets, developed by Seattle-based Vortex Control Technologies, have been mounted on the aircraft’s rear door and on both sides of the tail fin and are being evaluated for their flight and air handling capabilities.
Finlets are an array of small fins that help to direct and streamline airflow. They are estimated to reduce drag by about 6-8 percent.
The Air Force has arranged to use Finlets, along with other drag-reducing technology, to optimize the performance of aircraft like the KC-135 and C-17.
“Drag reduction initiatives like Finlets are a tangible way we can modernize our fleet, reduce costs, and increase combat capability for the warfighter,” said Roberto Guerrero, deputy assistant secretary of the Air Force for operational energy, safety, and occupational health.
“Every gallon of fuel saved extends our operational reach and enhances readiness in contested logistics environments, directly supporting the department’s mission to deliver airpower anytime, anywhere.”
After initial testing at Eglin, tests will continue at Edwards Air Force Base in California.
While the MC-130J is the first aircraft to undergo evaluation with the Finlets, the goal is to use the devices on the entire C-130J fleet, officials said.
