Active winglets for Citations debuts  At the 2012 NBAA
Convention, which opens today, Tamarack Aerospace Group
introduced its new Active Winglet technology for Cessna Citation
jets.  With shipments expected to begin in 2014, the Active
Winglets will provide Citation owners with improved fuel
savings, greater flying range, increased max zero fuel weight,
better short field operation, improved climb performance,
improved “high, hot” performance, smoother flights, lighter wing
loading and substantially enhanced style, according to company
officials.  Winglets have been around for decades and their
impact on fuel savings is well known. A drawback to passive
winglets is that in redistributing lift across the wing they can
increase wing bending moments at the root, sometimes beyond
design limits, Tamarack officials note. In turbulence or steep
turns bending is exacerbated with passive winglets. To counter
the forces, additional structure (i.e. weight) is needed, or a
smaller, less optimized winglet is used.  Tamara