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In-Flight Testing of MEMS Pressure Sensors for Flight Loads Determination

Raab, Christian and Rohde-Brandenburger, Kai (2020) In-Flight Testing of MEMS Pressure Sensors for Flight Loads Determination. In: AIAA Scitech Forum, 2019. Scitech 2020 Forum, 6.-10. Jan. 2020, Orlando, Florida, USA. doi: 10.2514/6.2020-0512.

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Abstract

The determination and monitoring of structural loads during flight is an important partof every certification program. It must be proved to the certification authorities that the loads occurring during specific flight maneuvers do not exceed the permissible component loads. Usually conventional strain gauges are used to determine structural loads, however an elaborate calibration process is necessary to determine these loads from the measuredstrains. Recent advances in sensor technology allow determining aerodynamic loads directly from pressure distributions measured by MEMS based sensors. When compared to strain gauges this measurement method has several advantages over conventional strain gauges interms of installation and calibration costs. Flight tests were carried out with the DLR researchglider aircraft Discus-2c in order to compare and investigate the loads determined with the two measuring methods. For this purpose a wing glove equipped with 64 MEMS pressure sensors on the airfoil surface was constructed. Different maneuvers with varying loads were performed during the test flights. A first evaluation of steady flight maneuvers shows that theloads determined from the measured pressure distribution are in very good accordance with the ones determined from the strain gauge measurements. This paper gives an overview of the flight test setup and the data analysis process, results from evaluations of trimmed wings-level flight and steady turn maneuvers are presented and discussed.

Item URL in elib:https://elib.dlr.de/133755/
Document Type:Conference or Workshop Item (Speech)
Title:In-Flight Testing of MEMS Pressure Sensors for Flight Loads Determination
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Raab, ChristianUNSPECIFIEDhttps://orcid.org/0000-0003-4504-4165UNSPECIFIED
Rohde-Brandenburger, KaiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:5 January 2020
Journal or Publication Title:AIAA Scitech Forum, 2019
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI:10.2514/6.2020-0512
Status:Published
Keywords:flight test, glider, loads, strain gauge, MEMS, pressure sensor, pressure distribtution
Event Title:Scitech 2020 Forum
Event Location:Orlando, Florida, USA
Event Type:international Conference
Event Dates:6.-10. Jan. 2020
Organizer:AIAA
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:20 Oct 2020 15:34
Last Modified:22 Dec 2020 16:18

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