It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Airbus already is exploring the use of winglets and next month plans to start testing a second design to determine which aerodynamic configuration is optimum. The first version has completed 10 flights and 30 hr. on two aircraft, one from JetBlue in the production configuration, and an early Airbus prototype (MSN1). The winglets would likely require wing stiffening and Heinen says the weight tradeoff