STATIC AEROELASTIC TAILORING OF A HIGH-ASPECT-RATIO-WING FOR A SAILPLANE WITH A FORWARD MORPHING WING SECTION

Fabian Sturm, Gerrit Illenberger, David Techmer, Mirko Hornung

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

A sailplane with a morphing forward wing section allows a promising increase in performance. As a consequence, the morphing forward section leads to a smaller primary structure and reduced torsional stiffness. As the shear center is moved aft the aerodynamic center, an aeroelastic twisting moment is induced on the high-aspect-ratio wing. The layup and fiber angles of the wing shells are optimized to counteract the adverse wing twist by modifying stiffness and applying bending-torsion-coupling. An efficient parametrization and optimization method of the wing skin layup is developed for a finite element shell model of the wing structure. The aerodynamic model utilizes a doublet lattice model, based on an optimized aerodynamic wing design for a morphing wing sailplane. Structural masses and masses for controls, flaps and water ballast are included with discrete mass elements. To solve the static aeroelastic problem and to determine the deflection, NASTRAN SOL144 is used. Load cases for low- and high speed conditions as well as for pull-up manoeuvres are analyzed. Results show that the bending-torsion-coupling effect can have a beneficial or adverse effect depending on the specific load case and aerodynamic configuration.

Original languageEnglish
Title of host publication32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021
PublisherInternational Council of the Aeronautical Sciences
ISBN (Electronic)9783932182914
StatePublished - 2021
Event32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021 - Shanghai, China
Duration: 6 Sep 202110 Sep 2021

Publication series

Name32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021

Conference

Conference32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021
Country/TerritoryChina
CityShanghai
Period6/09/2110/09/21

Keywords

  • Aeroelastic tailoring
  • Morphing structure
  • Morphing wing
  • Sailplane

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