Experimental Verification of the Rudder-free Stability Theory for an Airplane Model Equipped with Rudders Having Negative Floating Tendency and Negligible Friction PDF Download

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Experimental Verification of the Rudder-free Stability Theory for an Airplane Model Equipped with Rudders Having Negative Floating Tendency and Negligible Friction

Experimental Verification of the Rudder-free Stability Theory for an Airplane Model Equipped with Rudders Having Negative Floating Tendency and Negligible Friction PDF Author: Marion O. McKinney
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 70

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Book Description
When this assumption is made that the rolling motions alone or the lateral and rolling motions may be neglected in the calculations of rudder-free stability, it is possible to predict satisfactorily the characteristics of the long-period (Dutch roll type) rudder-free oscillation for airplanes only when the effective-dihedral angle is small. With these simplifying assumptions, however, satisfactory prediction of the short-period oscillation may be obtained for any dihedral. Further simplification of the theory based on the assumption that the rudder moment of inertia might be disregarded was found to be invalid because this assumption made it impossible to calculate the characteristics of the short-period oscillations.