Aiaa 98-4148 a Study of Helicopter Handling Qualities in Turbulence Using a Human Pilot Structural Model
نویسنده
چکیده
In this paper the impact of atmospheric turbulence on helicopter handling qualities is investigated using a simple random turbulence representation and a structural human pilot model. Linear approximation of the turbulence field and the frozen field concept are assumed. Effects of uniform field component and spatial gradients in the horizontal plane are individually evaluated on each axis. Turbulence intensity is varied from low to medium and severe, at low and high altitude. Simple, single axis missions on each of the four control channels are considered. Several different aircraft configurations that yield various handling qualities levels, as evaluated using classic criteria, are compared to each other and consistency of handling qualities prediction is assessed. Contributions of every turbulence field component to degradation of handling qualities are evaluated. Some results suggest that handling qualities hierarchy in still air is not necessarily preserved in turbulence. Plots to illustrate major observed trends are presented.
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