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dutch roll
Definição1
A combination of rolling and yawing oscillations that normally occurs when the dihedral effects of an aircraft are more powerful than the directional stability. Usually dynamically stable but objectionable in an airplane because of the oscillatory nature.
Fonte1
FEDERAL AVIATION ADMINISTRATION. Pilot's handbook of aeronautical knowledge. [s.l.], 2008. Disponível em: http://www.faa.gov/regulations_policies/handbooks_manuals/aviation/pilot_handbook/media/PHAK%20-%20Cover-Preface.pdf. Acesso em: 26 jun. 2014.
Definição2
A lateral oscillation of an aircraft, particularly one in which the radio of the rolling to yawing motion is appreciable.
Fonte2
MULTILINGUAL aeronautical dictionary, or, dictionary aeronautique multilingue: english, french, spanish, dutch, greek, italian,portuguese, turkish. London, England: Technical Editing and reproduction Ltd, 1980. xx, 876 p. ISBN 92835016667
Fonte3
INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual of aircraft accident and incident investigation. Montreal, 2014. (Doc. 9756)
Fonte4
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. Projeto ABNT 08;020.30-009-1: aeronáutica e espaço – vocabulário – parte 1 – aeronaves. Rio de Janeiro, 2011.
Nota adicional1
Information regarding this term is a result of researches developed by DECEA in cooperation with ANAC.
Contexto
The Dutch Roll mode is a lateral/directional oscillation of bank angle, heading and lateral acceleration, which is the result of sideslip and cross-coupling of the lateral and directional axes.
Subárea1
Piloting
Português
rolamento holandês
Imagem

 Illustration of the composition of two motions which constitute the dutch roll (exaggerated). On top (front view) the rolling motion; below (plan view) the yaw motion.

Illustration of the composition of two motions which constitute the dutch roll (exaggerated). On top (front view) the rolling motion; below (plan view) the yaw motion.

Fonte: http://pt.wikipedia.org/wiki/Ficheiro:Rolamentoholandes1.gif