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Analysis examines fan disc loading's impact on system weight and cost in VTOL aircraft, suggesting optimal loading ranges.
The weight and cost of the hovering powerplant system (gas generators plus fans plus hovering fuel) are examined as a function of the fan disc loading for the range 200 to 1000 lb/ft ². The optimum loading, for the mission and conditions specified, is demonstrated to lie between 500 and 750 lb/ft ².
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Cockshutt et al. (1959) studied this question.
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