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Pre-Test of a Light-Weight CFRP Wing Segment of a High Altitude Platform for In-flight Load Measurements Based on Strains

Voß, Arne and Soal, Keith Ian and Sinske, Julian and Meier, David and Niemann, Steffen and Nickel, Jörg and Hanke, Michael (2021) Pre-Test of a Light-Weight CFRP Wing Segment of a High Altitude Platform for In-flight Load Measurements Based on Strains. Deutscher Luft- und Raumfahrtkongress, 30.08.-02.09.2021, Bremen, Deutschland.

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Abstract

For the validation of loads and aeroelastic simulations of a high altitude platform (HAP) in-flight, load measurements are very helpful. One technique to obtain load measurements is to apply strain gages to the primary structure. A calibration procedure enables the reconstruction of the loads from the measured strains. To reduce the risks, gain confidence and establish a feasible measurement set-up, a pre-test based on a CFRP wing segment is performed. This paper presents the theoretical background and the set-up of the measurement equipment. The results of the calibration from three different test cases are presented, showing an excellent agreement between applied and reconstructed loading with a deviation of < +/- 1.0 N and < +/- 2.0 cm for the location. Finally, the strains measured in the experiment are compared with the simulation, showing that a prediction of the strains is possible within a range of < +/- 8%.

Item URL in elib:https://elib.dlr.de/143154/
Document Type:Conference or Workshop Item (Speech)
Title:Pre-Test of a Light-Weight CFRP Wing Segment of a High Altitude Platform for In-flight Load Measurements Based on Strains
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Voß, ArneArne.Voss (at) dlr.dehttps://orcid.org/0000-0003-2266-7853
Soal, Keith IanKeith.Soal (at) dlr.dehttps://orcid.org/0000-0002-5132-6823
Sinske, Julianjulian.sinske (at) dlr.dehttps://orcid.org/0000-0002-6080-9982
Meier, Daviddavid.meier (at) dlr.deUNSPECIFIED
Niemann, SteffenSteffen.Niemann (at) dlr.dehttps://orcid.org/0000-0001-9272-0635
Nickel, JörgJoerg.Nickel (at) dlr.deUNSPECIFIED
Hanke, MichaelMichael.Hanke (at) dlr.deUNSPECIFIED
Date:31 August 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:high Altitude Platform, flight test, load measurement, strain gages, strains
Event Title:Deutscher Luft- und Raumfahrtkongress
Event Location:Bremen, Deutschland
Event Type:national Conference
Event Dates:30.08.-02.09.2021
Organizer:Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Unmanned Aerial Systems
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Institute of Composite Structures and Adaptive Systems > Composite Technology
Institute of Aeroelasticity > Structural Dynamics and System Identification
Deposited By: Voß, Arne
Deposited On:31 Aug 2021 14:12
Last Modified:21 Sep 2021 14:06

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