Aeroelastic scaling of flying demonstrators: mode tracking technique

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Aeroelastic scaling of flying demonstrators: mode tracking technique

Authors
  • Mas Colomer, Joan
  • Bartoli, Nathalie
  • Lefebvre, Thierry
  • Morlier, Joseph
Type
Published Article
Journal
Mechanics & Industry
Publisher
EDP Sciences
Publication Date
Jan 21, 2022
Volume
23
Identifiers
DOI: 10.1051/meca/2021051
Source
EDP Sciences
Keywords
Disciplines
  • Regular Article
License
Green
External links

Abstract

Aeroelastic scaling theory shows that the design problem of aeroelastically equivalent scaled aircraft can be treated as a structural-only design problem if the aerodynamic shape and airflow properties of the full scale aircraft are preserved. In that case, the theory shows that it is sufficient to match the scaled natural mode shapes, frequencies and mass of the reference aircraft. In this paper, we present a new method for the dynamic scaling of flexible structures where the objective function is based on the modal assurance criterion (MAC). This criterion is used for a mode tracking strategy during the optimization process. Finally, we apply this method to a scaled version (1:5) of the uCRM wing, achieving an agreement greater than 99% on the average MAC value of the first 5 modes.

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