PERFORMANCE EVALUATION METHOD FOR DISSIMILAR AIRCRAFT DESIGNS.

被引：0
|
作者：
Walker, Harold J.
机构：
来源：
NASA Reference Publication | 1979年 / 1042期
关键词：
AIRCRAFT; -; Performance;
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摘要：
A rationale is presented for using the square of the wingspan rather than the wing reference area as a basis for nondimensional comparisons of the aerodynamic and performance characteristics of aircraft that differ substantially in planform and loading. Working relationships are developed and illustrated through application to several categories of aircraft covering a range of Mach numbers from 0. 60 to 2. 00. For each application, direct comparisons of drag polars, lift-to-drag ratios, and maneuverability are shown for both nondimensional systems. The inaccuracies that may arise in the determination of aerodynamic efficiency based on reference area are noted. 32 refs.
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