Morphing Winglet

New Scientist report that Boeing and Airbus are developing the “morphlet”, a morphing wing tip extension. The idea is that extra fuel savings over and above those already gained with a passive winglet can be obtained. In addition, the morphlet will be able to extend the wing span, increasing aspect ratio and hence aerodynamic efficiency, thereby reducing thrust levels further on landing approach.

This means that engine noise is now even further reduced, making airframe noise more significant. This will further increase the importance of airframe noise, making research in this area even more important.