Structural Sizing and Topology Optimization Based on Weight Minimization of a Variable Tapered Span-Morphing Wing for...

Area of Science:

• Aerospace Engineering
• Structural Optimization
• Computational Mechanics

Background:

• Morphing aircraft wings offer enhanced aerodynamic performance and mission adaptability.
• Optimizing morphing wing structures presents challenges in balancing weight, stiffness, and aerodynamic loads.

Purpose of the Study:

• To develop and evaluate an integrated optimization framework for morphing variable span of tapered wings (MVSTW).
• To minimize the structural weight of MVSTW components while ensuring aerodynamic efficiency and structural integrity.

Main Methods:

• A numerical environment was created integrating structural sizing, topology optimization, and aerodynamic analysis.
• A problem-specific optimization approach was employed for fixed and moving wing segments.
• The OptiStruct solver within HyperMesh was utilized for the optimization process.

Main Results:

• Weight savings of up to 51.2% for fixed wing segments and 55.7% for moving wing segments were achieved.
• The optimization successfully minimized structural compliance while maximizing stiffness.
• Aerodynamic load distribution was considered for full wingspan extension and maximum speed.

Conclusions:

• The integrated optimization approach is feasible for MVSTW design.
• Optimized MVSTW structures can achieve substantial weight reduction without compromising structural integrity.
• The developed optimized morphing wing is capable of performing flight missions reliably.