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Automated calculation of the internal structure and the natural frequencies of helicopter rotor blades with regard to automated rotor blade optimization

Becker, Franziska and Kalow, Steffen and Bartels, Rainer (2023) Automated calculation of the internal structure and the natural frequencies of helicopter rotor blades with regard to automated rotor blade optimization. In: 49th European Rotorcraft Forum 2023. European Rotorcraft Forum 2023, 2023-09-05 - 2023-09-07, Bückeburg, Germany.

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Abstract

With regard to an automated multidisciplinary optimization process an automated modeling and calculation of the structural properties of helicopter rotor blades was aspired. For this purpose, a program for structural rotor blade modelling based on rotor blade cross-sections was developed. This process is implemented as three successive steps. First, the CAD cross-section geometry is generated on the basis of a geometry template. Based on this, a structural model is generated and the structural properties are calculated with DLR inhouse tool SaMaRA. Finally, the natural frequencies are calculated using a beam model according to Houbolt & Brooks. To investigate the internal structure of a given outer blade geometry, the sensitivity of structural parameter variations was carried out. For this purpose, a uniform shaped rotor blade based on a selected cross-sectional topology in the aerodynamic blade region was considered. The performed parame-ter study considers the effects of different parameter intervals on the structural properties and the resulting natural frequencies.

Item URL in elib:https://elib.dlr.de/199088/
Document Type:Conference or Workshop Item (Speech)
Title:Automated calculation of the internal structure and the natural frequencies of helicopter rotor blades with regard to automated rotor blade optimization
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Becker, FranziskaUNSPECIFIEDhttps://orcid.org/0000-0002-9498-9563147036395
Kalow, SteffenUNSPECIFIEDhttps://orcid.org/0000-0002-5308-1209UNSPECIFIED
Bartels, RainerUNSPECIFIEDhttps://orcid.org/0009-0001-0498-6247164066318
Date:2023
Journal or Publication Title:49th European Rotorcraft Forum 2023
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Sensitivity Analysis, Rotorblade, Automated process
Event Title:European Rotorcraft Forum 2023
Event Location:Bückeburg, Germany
Event Type:international Conference
Event Start Date:5 September 2023
Event End Date:7 September 2023
Organizer:DGLR, CEAS
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 - Virtual Rotorcraft and Validation
Location: Braunschweig
Institutes and Institutions:Institut für Systemleichtbau > Adaptronics
Institute of Flight Systems > Rotorcraft
Deposited By: Becker, Franziska
Deposited On:20 Nov 2023 18:29
Last Modified:22 Jul 2024 11:57

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