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Area of Science:

  • Robotics and Mechanical Engineering
  • Aerospace Engineering
  • Biomimetics

Background:

  • Collapsible aircraft require advanced wing designs for improved flight performance.
  • Existing mechanisms often lack the efficiency and maneuverability of natural systems.
  • Beetle wing structures offer a promising model for bio-inspired foldable wing mechanisms.

Purpose of the Study:

  • To design and analyze a novel bionic foldable wing mechanism for collapsible aircraft.
  • To optimize wing parameters for enhanced flight performance using kinematic and static models.
  • To investigate the dynamic behavior of both rigid and flexible wings during folding.

Main Methods:

  • A four-plate mechanism theory was applied to design the bionic foldable wings.
  • The Denavit-Hartenberg (D-H) method was used to establish a kinematic model for dihedral angle analysis.
  • Rigid and flexible wing dynamic models were created and simulated using ADAMS software.
  • Kinematic and static models were utilized to derive and calculate the folding ratio and optimal physical parameters.

Main Results:

  • The study derived and calculated the folding ratio based on different plate creasing angles.
  • Optimal physical parameters for the folding wings were obtained by considering kinematic, static models, folding ratio, and motor torque.
  • Dynamic simulations revealed the relationship between dihedral angle and torque for both rigid and flexible wings during folding.

Conclusions:

  • The developed bionic foldable wing mechanism offers a novel approach for collapsible aircraft.
  • Rigid-flexible wing analysis provides a deeper understanding of the folding mechanism.
  • This insect-mimicking design demonstrates potential for advanced small aerial vehicles.