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Dynamic Flight Load Measurements with MEMS Pressure Sensors

Raab, Christian and Rohde-Brandenburger, Kai (2020) Dynamic Flight Load Measurements with MEMS Pressure Sensors. Deutscher Luft- und Raumfahrtkongress 2020, 01.-03. Sep. 2020, Aachen.

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The exact 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 in order 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 like Stalls and Pull-Up Push-Over maneuvers. 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/138249/
Document Type:Conference or Workshop Item (Speech)
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:1 September 2020
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:loads, strain gauges, MEMS, pressure sensor, aircraft, flight test, Discus-2c, glider
Event Title:Deutscher Luft- und Raumfahrtkongress 2020
Event Location:Aachen
Event Type:national Conference
Event Dates:01.-03. Sep. 2020
Organizer:DGLR e.V.
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 - Systems and Cabin (old)
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:22 Dec 2020 16:07
Last Modified:12 Jan 2021 12:41

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