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Structural Dynamic Response of Large Logistic V/STOL Vehicles

Report Number: FDL TDR 64-44
Author: Rich, M. J.
Author: Jepson, W. D.
Author: Buffalono, A. C.
Author: Stebbins, R. F.
Corporate Author: Sikorsky Aircraft
Laboratory: AF Flight Dynamics Laboratory
Date of Publication: 1964-04
Pages: 204
Contract: AF 33(657)-8452
Project: 1370
Task: 137008
AD Number: AD0601051

Preliminary designs are evolved for five large logistic V/STOL configurations. Structural elastic characteristics and mass distributions are calculated. The structural dynamic response is investigated for ground landing, take-off abort, maneuvers, gust penetration and landing conditions. The results of this investigation are tabulated in a matrix showing the degree and relative criticalness for the conditions and the V/STOL configurations. The degree of criticalness is established as the ratio of the peak dynamic loading and/or stress to the values used in the configuration design structural study. The latter structural loads and/or stresses are evolved through the use of existing military specifications or normal design practices.

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