Andrew A. Rader

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Using a variable-radius roll swing motion paradigm, we examined the influence of interaural (y-axis) and dorsoventral (z-axis) force modulation on perceived tilt and translation by measuring perception of horizontal translation, roll tilt, and distance from center of rotation (radius) at 0.45 and 0.8 Hz using standard magnitude estimation techniques(More)
We examined the influence of dynamic visual scenes on the motion perception of subjects undergoing sinusoidal (0.45 Hz) roll swing motion at different radii. The visual scenes were presented on a flatscreen monitor with a monocular 40° field of view. There were three categories of trials: (1) trials in the dark; (2) trials where the visual scene matched the(More)
Tradespace exploration provides a structured, concept neutral means of considering a large number of design alternatives while avoiding a premature focus on point designs. However, the process can be difficult to implement in the design of complex space systems when considering practical partitioning and allocation of design tasks. Complicating the effort(More)
This study presents a novel approach to optimizing the configuration of piezoelectric actuators for vibration control of a flexible aircraft fin. The fitness (cost) function for optimization using a genetic algorithm is derived directly from the frequency response function (FRF) obtained from a finite element model of the fin. In comparison to existing(More)
As a consequence of the push to increase National Airspace System capacity, air traffic control displays will not only have to show the increasing number of aircraft, but also all the associated data such as airspeed and altitude. The representation of aircraft data and associated relational information, often superimposed on a map, leads to cluttered(More)
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