摘要: This memorandum is intended as a concise summary of the major findings of an analytical review of published literature about three Visual Approach Slope Indicators; T-VASIS, Red-White VASIS and PAPI. Performance data, ergonomics o... 展开 This memorandum is intended as a concise summary of the major findings of an analytical review of published literature about three Visual Approach Slope Indicators; T-VASIS, Red-White VASIS and PAPI. Performance data, ergonomics of the designs and operational requirements of the landing aids are considered. This memorandum and the fuller report, currently in the process of publication, are part of an ARL series on related topics. 收起