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/ | ||||||||||||||||||||||||
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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: |
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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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