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Dynamic flight load measurements with MEMS pressure sensors

Raab, Christian and Rohde-Brandenburger, Kai (2021) Dynamic flight load measurements with MEMS pressure sensors. CEAS Aeronautical Journal. Springer. doi: 10.1007/s13272-021-00529-3. ISSN 1869-5590.

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The determination of structural loads plays an important role in the certification process of new aircraft. Strain gauges are usually used to measure and monitor the structural loads encountered during the flight test program. However, a time-consuming wiring and calibration process is required to determine the forces and moments from the measured strains. Sensors based on MEMS provide an alternative way to determine loads from the measured aerodynamic pressure distribution around the structural component. Flight tests were performed with a research glider aircraft to investigate the flight loads determined with the strain based and the pressure based measurement technology. A wing glove equipped with 64 MEMS pressure sensors was developed for measuring the pressure distribution around a selected wing section. The wing shear force determined with both load determination methods were compared to each other. Several flight maneuvers with varying loads were performed during the flight test program. This paper concentrates on the evaluation of dynamic flight maneuvers including Stalls and Pull-Up Push-Over maneuvers. The effects of changes in the aerodynamic flow characteristics during the maneuver could be detected directly with the pressure sensors based on MEMS. Time histories of the measured pressure distributions and the wing shear forces are presented and discussed.

Item URL in elib:https://elib.dlr.de/143329/
Document Type:Article
Title:Dynamic flight load measurements with MEMS pressure sensors
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Raab, ChristianUNSPECIFIEDhttps://orcid.org/0000-0003-4504-4165UNSPECIFIED
Date:27 July 2021
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Aerospace, Flight Testing, Loads, Strain Gauges, Pressure sensor, MEMS
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Aircraft Technologies and Integration
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Flight Dynamics and Simulation
Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Raab, Dipl.-Ing. Christian
Deposited On:01 Feb 2022 15:05
Last Modified:23 Oct 2023 07:34

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