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Influence Of Contact Points of Skid Landing Gears on Helicopter Ground Resonance Stability

Lojewski, Reinhard and Keßler, Christoph and Bartels, Rainer (2019) Influence Of Contact Points of Skid Landing Gears on Helicopter Ground Resonance Stability. In: 19th ONERA-DLR Aerospace Symposium. ODAS 2019, 03. - 05. Juni 2019, Paris, Frankreich. (Unpublished)

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Soft-in-plane rotor systems are susceptible to a self-induced vibration phenomenon called ground resonance. This dynamic instability results from lag motions of the rotor blades coupling with airframe degrees of freedom while the helicopter is in ground contact. As an addition to previous slope landing studies and investigations of non-linear landing gear effects, this work focuses on a systematic study of partial skid contact using different landing modelling approaches and contact definitions. This paper is part of a larger study to investigate the influences of partial ground contact and soft terrain on helicopter dynamic stability during landings. It is the long-range objective to reduce the necessity of extensive flight tests prior to helicopter certification processes.

Item URL in elib:https://elib.dlr.de/128877/
Document Type:Conference or Workshop Item (Speech)
Title:Influence Of Contact Points of Skid Landing Gears on Helicopter Ground Resonance Stability
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lojewski, ReinhardReinhard.Lojewski (at) dlr.deUNSPECIFIED
Keßler, ChristophChristoph.Kessler (at) dlr.deUNSPECIFIED
Bartels, RainerRainer.Bartels (at) dlr.deUNSPECIFIED
Date:3 June 2019
Journal or Publication Title:19th ONERA-DLR Aerospace Symposium
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Dupoirieux, FrancisOnera
Barriety, NadineOnera
Keywords:Bodenresonanz, ground resonance, Kontakt, contact, dynamische Stabilität, dynamic stability
Event Title:ODAS 2019
Event Location:Paris, Frankreich
Event Type:international Conference
Event Dates:03. - 05. Juni 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - VicToria
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Institute of Flight Systems > Unmanned Aircraft
Deposited By: Lojewski, Reinhard
Deposited On:10 Jan 2020 19:12
Last Modified:10 Jan 2020 19:12

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