The inherent proportionality of the human body has been accepted since ancient times. Moreover, it has been assumed that anthropometric dimensions could be validly predicted by ratios or multipliers of another dimension (usually stature). Stature-based anthropometric multipliers from Drillis and Contini's (1966) Body Segment Parameters have been frequently referenced, even though their study focused on body segment mass properties rather than anthropometric dimension prediction. Using the electronic data from the U.S. Army 1987 anthropometric survey (Gordon et al., 1989, we explored the prediction validity of stature-based anthropometric multipliers, and investigated the potential for improved validity by correcting multipliers for gender and race. This paper discusses selected findings for one (i.e. acromial height) of the ten anthropometric dimensions we studied within the white male demographic group, and compares these representative findings with selected results from the other anthropometric dimensions studied. Overall, practitioners should exercise caution when using anthropometric multipliers to predict, as these multipliers are subject to problems in predicting individual anthropometric variations and their predictions are susceptible to systematic percentile-placement errors. Although caution is required when employing stature-based multipliers, the most valid predictions result from using stature-based multipliers that are corrected for gender and racial demographic variables.

This paper describes flight trials of Honeywell Advanced 3D Primary Flight Display System. The system employs a large-format flat-panel avionics display presently used in Honeywell PRIMUS EPIC flightdeck products and is coupled to an on-board EGPWS system. The heads-down primary flight display consists of dynamic primary-flight attitude information, flight-path and approach symbology similar to Honeywell HUD2020 heads-up displays, and a synthetic 3D perspective-view terrain environment generated with Honeywellís EGPWS terrain data. Numerous flights are conducted on-board Honeywell Citation V aircraft and significant amount of pilot feedback are collected with portion of the data summarized in this paper. The system development is aimed at leveraging several well-established avionics components (HUD, EGPWS, large-format displays) in order to produce an integrated system that significantly reduces pilot workload, increases overall situation awareness, and is more beneficial to flight operations than achievable with separated systems.

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