JANAIR VERTICAL CONTACT ANALOG DISPLAY EVALUATION PROGRAM: ACCURACY OF ALTITUDE, ROLL ANGLE, AND PITCH ANGLE JUDGMENTS AS A FUNCTION OF SIZE OF VERTICAL CONTACT ANALOG DISPLAY
NAVAL MISSILE CENTER POINT MUGU CA
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The purpose of the document is to report the first results from a series of experiments establishing and optimizing the utility of the Vertical Contact Analog Display VCAD. The VCAD concept is that of a computer-generated pictorial display which provides the observer with visual cues as to aircraft orientation. These cues are analogous to those available under contact flight conditions. The specific objectives of this experiment series were 1 to establish the relationship between size of VCAD display and judgment accuracy for altitude, pitch, and roll estimates, and 2 to obtain estimates of the accuracy with which these quantities may be judged. Four studies were conducted to measure Ss ability to maintain a given standard against a forcing function and three studies were conducted to measure Ss ability to recall and utilize an internalized standard. Both types of experiments were conducted for each of the three flight related quantities. The experimental designs for each of these experiments were fractional replicates with repeated measures. The analytic procedure consisted of the fitting of response surface models and the graphical representation of these models. It was concluded that display size had an effect on the accuracy for each of the three flight quantities, but the nature of the effect depended on both the type of judgment task maintenance versus recalled standard and the magnitude of the standard being judged. Generally, the effect was more pronounced for the maintenance experiments.
- Human Factors Engineering and Man Machine Systems