The US Air Force is completing its evaluation of 3D-printed microvanes designed to reduce drag on C-17 Globemaster III transport aircraft. These small blade-like components, measuring 4 x 16 inches, are installed at the rear of the aircraft’s fuselage using adhesive. The modification aims to decrease drag by one percent and improve fuel efficiency.
Testing of the microvanes concluded in October 2023, with trials including assault strip and air refueling operations. The first C-17 equipped with these devices is currently stationed at Stewart Air National Guard Base in New York, where it has been operating successfully for over a year, including deployment missions.
The Air Force projects significant cost benefits from this modification, with an estimated return on investment within seven months and annual fuel savings exceeding $14 million. “Every gallon of fuel saved strengthens our readiness and operational effectiveness,” stated Roberto Guerrero, US Air Force Operational Energy, Safety, and Occupational Health Deputy Assistant Secretary.
Six C-17s have now been fitted with the 3D-printed microvanes as part of a logistics service assessment. The evaluation phase will continue at Charleston Air Force Base in South Carolina for six months after two additional aircraft receive the modification. This testing period will determine the feasibility of implementing the technology across the entire Globemaster III fleet.
The project represents a collaboration between multiple Air Force bases and engineering teams. Lt. Col Eric Durkins of the 105th Aircraft Maintenance Squadron noted that maintainers worked alongside engineers from the project’s beginning to develop installation procedures. The modification addresses aerodynamic disruption caused by the aircraft’s cargo door section design.
Source: thedefensepost.com