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General Aviation Aircraft Design by Snorri Gudmundsson

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Chapter 6

Aircraft Weight Analysis

Abstract

A number of methods to estimate various weights associated with aircraft are presented. Definitions of important weight properties, such as empty, gross, ramp, and maximum zero fuel weight are defined. Two weight estimation methods, intended to assess the first estimate of the airplane’s weight based on historical data, are introduced using numerical examples. Then, three detailed weight analysis methods referred to as actual, statistical, and direct weight estimation methods are presented. Statistical methods associated with Raymer and Nicolai are introduced. Also a methodology called Method of Fractions is introduced to relate wing weight to its AR, but such methods are helpful in establishing relationships ...

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