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Inflight-Measurements of Aircraft Undercarriage Vibration during Deployment

Schwochow, Jan and Sinske, Julian and Buchbach, Ralf (2018) Inflight-Measurements of Aircraft Undercarriage Vibration during Deployment. In: ettc2018 - proceedings, p. 54. AMA Service GmbH. ettc2018 - European Test and Telemetry Conference 2018, 26.-28.Jun. 2018, Nürnberg. ISBN 978-3-9816876-8-2.

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Official URL: http://www.ama-service.com


Within the EU funded Project AFLoNext (http://www.aflonext.eu/) flow-induced vibrations of aircraft components are under investigation. Aerodynamic or structural devices are designed to mitigate the vibration response levels especially of the deployed landing gear doors. The nose landing gear is emitting vorticity which impacts the downstream located main landing doors. To verify the results of unsteady complex flow simulations of the undercarriage conducted by different project partners, flight tests shall provide a database for calibration of numerical investigations and verify the results. Different types of sensors were installed on the undercarriage of the Advanced Technology Research Aircraft operated by the German Aerospace Center DLR, comprising accelerometers, strain gauges, travel and pressure sensors. To get detailed knowledge of the dynamic interaction of pressure loads and structural response on the nose and main landing gear doors, the simultaneous data acquisition of all signals at high sample rates up to 2 kHz was mandatory during deployment. In addition, monitoring of critical response levels was essential to stay in defined limits during flight. The presentation will give an overview of the selected Flight Test Instrumentation and the preparation of the test aircraft including the documentation and substantiation to get the flight approval.

Item URL in elib:https://elib.dlr.de/120759/
Document Type:Conference or Workshop Item (Speech)
Title:Inflight-Measurements of Aircraft Undercarriage Vibration during Deployment
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Schwochow, Janjan.schwochow (at) dlr.dehttps://orcid.org/0000-0002-5430-8479
Sinske, Julianjulian.sinske (at) dlr.dehttps://orcid.org/0000-0002-6080-9982
Buchbach, Ralfralf.buchbach (at) dlr.dehttps://orcid.org/0000-0003-3417-997X
Date:28 June 2018
Journal or Publication Title:ettc2018 - proceedings
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:p. 54
Publisher:AMA Service GmbH
Keywords:landing gear door, vibration, flow control, flight test
Event Title:ettc2018 - European Test and Telemetry Conference 2018
Event Location:Nürnberg
Event Type:international Conference
Event Dates:26.-28.Jun. 2018
Organizer:European Society of Telemetry
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 - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Structural Dynamics and System Identification
Deposited By: Schwochow, Jan
Deposited On:03 Jul 2018 17:14
Last Modified:20 Jun 2021 15:51

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