219. The Development of Generalized Weight Estimating Methods


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W E Caddell: 219. The Development of Generalized Weight Estimating Methods. 1959.



This paper covers the development of generalized weight estimating methods for use by aircraft manufacturers’ in preliminary design. Cases are studied to graph the mathematical relationship between weight and other aircraft parameters. Verification of weight estimation methods is also examined using statistical means.
If the weight estimate is too low at the preliminary state, much time and money is spent before corrective design becomes apparent. Too high an estimate can result in the selection of a configuration which is larger and more expensive than necessary to meet the requirements. It is concluded that the smallest airplane capable of meeting the primary requirements of range, speed, and payload should be the goal as the cost of an airplane is dependent to a considerable degree upon its size.


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