Experimental and Numerical Study on Optimization of Zigzag Rib Topologies for Trailing-Edge Morphing Wings for Low-Speed Applications

Authors

  • Siddalingappa Parameshappa Kodigaddi Nitte (Deemed to be University) – Nitte Meenakshi Institute of Technology (NMIT) – Department of Aeronautical Engineering – Bengaluru – Karnataka – India | Visvesvaraya Technological University – Belagavi – Karnataka – India https://orcid.org/0000-0001-5712-4555
  • Srikanth Holalu Venkataramana Visvesvaraya Technological University – Belagavi – Karnataka – India. https://orcid.org/0000-0001-7191-9100

Keywords:

Morphing wings, Trailing edges, Aerodynamic loads, Stiffness, Thermoplastic polyurethane, Computerized simulation

Abstract

This study aimed to propose different zigzag rib topologies for a trailing-edge morphing wing for low-speed applications. This study aimed to determine the best zigzag rib topology in terms of stiffness and safety factor. Numerical analysis was carried out using ANSYS under linear-static conditions for different test cases, such as rib topologies, rib thicknesses, deflection angles, and materials. A total of 81 test cases were studied with a point load applied at the trailing edge of each rib topology in each test to obtain the stiffness and safety factor. Experimental studies were also conducted to evaluate the mass and shapes of 3D-printed ribs. The findings revealed that thermoplastic polyurethane ribs with a 5 mm thickness exhibited moderate stiffness and a good safety factor, with no failure occurring under the applied conditions. Additionally, there was a perfect match between numerical and experimental results in terms of the mass and shape of the topologies under different test cases.


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Published

2025-09-26

Issue

Vol. 17 (2025)

Section

Original Papers

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Copyright (c) 2025 Siddalingappa Parameshappa Kodigaddi, Srikanth Holalu Venkataramana

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