The NASA Engineering and Safety Center (NESC) performed an assessment to characterize the effects of abnormal grain growth (AGG) within a metallic liner of a composite overwrapped pressure vessel (COPV). This effort focused on evaluating the mechanical response of the liner material, including the strain amplification factor (SAF), using a series of custom-designed coupons that […]
Only 52% Full!? Delta Air Lines’ 10 Emptiest International Routes
International markets are an exciting and important, but relatively small, part of Delta Air Lines’ total services. In the 12 months from November 2024 to October 2025, the SkyTeam member carried 29.1 million passengers on international flights.Some routes performed better than others while some routes performed far worse.