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原文传递 Development and Evaluation of VFR Lighted Flyvays in the Chicago Class B Airspace

题名：	Development and Evaluation of VFR Lighted Flyvays in the Chicago Class B Airspace
作者：	Pongnate Hongsehaovalit and Barry J. Dempsey
关键词：	VFR Flyway Aircraft Lighting Aviation Markers
摘要：	The objective of this study was to develop a prototype to be used as a VFR flyway marker in the Chicago Class B airspace. By using visual markers as a reference, VFR aircraft may be persuaded from transitioning through controlled airspace . More importantly, by scanning outside more than at the onboard instrument, the pilot’s probability to detect other aircraft, terrain, or obstructions would increase. In air-to-ground visual searches, size and color are the most important factors during daytime. With a 3-mile spacing, several testing schemes were developed to analyze the effect of size and colors on perceptibility. A commercially available structure manufactured by Sprung Instant Structure was determined to be the most economical. The recommended size is a ten-panel structure of 40-ft in diameter and 18-ft in height. The colors and marking pattern determined to be the most conspicuous and noticeable are the tangerine orange and yellow combination, with alternating solid colored pattern. Based upon laboratory testing ,White lighting beacons capable of Morse code ‘s’ flashes should be used for nighttime. The intensity of the light should be 200,000-, 20,---and 8,000- candelas at daytime, dusk, and nighttime, respectively. Following laboratory testing , flight evaluations were conducted at the University of Illinois and Schaumburg air ports. The result of this study has indicated that the prototype could be implemented as a VFR flyway marker. Further investigation is necessary, however, to fully understand its capability as well as its impact on aviation around the Chicago area.
报告类型：	科技报告