Blended Winglets
The system features patented* High Aspect-Ratio Blended Winglets. This winglet geometry is selected to achieve near ideal flow characteristics, particularly in the interface between wing and winglet. This allows for greater flight distances though more efficient wing aerodynamics.

Wing Span Increase
The system features an actual four-foot overall wingspan increase. With more wingspan, the airplane climbs higher and faster than the standard GII.

Removal of Wing Fences
The system features a very clean looking wing similar to the GIII and GIV. The large fences are removed from the wing, making it smoother and more efficient.

Vortex Generators
New lower drag, counter-rotated vortex generators maintain well-behaved airflow in the transonic speed. The new vortex generators are much smaller in size, about the size of a postage stamp. They are placed in different patterns on the top of the wing which controls airflow over the wing and avoids premature airflow seperation and the accompanying drag and buffet.

Vortilons
Vortilons improve the low speed handling characteristics of the airplane. The new vortilons are very small blades, about the size of a pocket comb, placed spanwise just under the leading edge of each wing. Vortilons effectively control spanwise airflows while further decreasing the drag on the GII wing.

Design and Construction
The design and construction of the GII Blended Winglet is a conventional aluminum and stainless steel spar and rib support structure overlaid with Carbon Graphite skins. The leading edge is polished aluminum. Total incremental installed weight of the Performance Enhancement System is less than 260 lbs.

Maintenance
No other additional maintenance is required for the Performance Enhancement System other than normal routine maintenance required for the GII.

*Patent #5348253

The Performance Enhancement System for the standard Gulfstream II airplane features exciting new performance and aesthetic improvements that add to the value, performance and look of the GII.