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Instability zones identification in multiblade rotor dynamics

Sanches, Leonardo and Michon, Guilhem and Berlioz, Alain and Alazard, Daniel Instability zones identification in multiblade rotor dynamics. (2010) In: 11th Pan-American Congress of Applied Mechanics, 4 January 2010 - 8 January 2010 (Foz do Iguaçu, Brazil).

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Abstract

Helicopter ground resonance is an unstable dynamic phenomenon which can lead to the total destruction of the aircraft during take-off or landing phases. Studies have been developed by researchers which considered a simplified mathematical model. With the goal of further comprehend the phenomenon, predictions of unstable motions are done and compared. First, Floquet's theory is applied to solve the linear equations of motion including parametric and periodic terms. Then, the multiple scales method is applied on the nonlinear model. The analyses highlight that, by keeping the nonlinear terms in the equations, other instability zones are identified.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Proceedings of PACAM XI
HAL Id:hal-01852296
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Laboratory name:
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Deposited By: Leonardo Sanches
Deposited On:28 Oct 2009 11:47

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