Computational aerodynamic design of the Gulfstream IV wing

A wing has been designed for the Gulfstream IV aircraft with the objective of improving upon the aerodynamic performance of the Gulfstream III. Computational methods capable of simulating the flow about this configuration, complete with nacelles and winglets, were implemented to enhance the probability that the desired effects would be verified by wind tunnel experimentation. Test results confirmed all pretest predictions. The new wing has a weaker, more swept shock which results in a lower cruise drag. Other benefits include a lower root bending moment and a lower stall speed.