Flying qualities - An integral part of a stability augmentation system

During the conception, development, and flight testing of a stability augmentation system designed to improve the structural response characteristics of the B-52, it was necessary to provide flying qualities criteria and to conduct piloted simulator studies to assure that the B-52 flying qualities were improved or maintained. The fixed-base simulator studies utilized a point light projection display system and a B-52 cockpit display and included the effect of random turbulence. The results of the studies conducted for the lateral-directional axis are presented. In the piloted simulation study the Dutch roll frequency and damping were varied while other pertinent lateral-directional parameters were maintained constant. It was found that the Dutch roll damping required to provide satisfactory flying qualities in turbulence was significantly greater than the damping required in essentially calm air. Improvements in the handling qualities as verified by flight test are also presented.