Armed with the results of flight tests on the C-130 and C-17 military airlifters, Vortex Control Technologies (VCT) plans to certify its aft-body drag-reduction devices on the Boeing 737NG family of airliners. Extensive computational fluid-dynamics (CFD) analysis indicates the devices, called finlets, will reduce fuel burn by an average of 1%, and Kennesaw, Georgia-based VCT says the savings will return the investment in 2-3 years. Finlets originally were developed to reduce cruise drag ...

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