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Lift is a fundamental aerodynamic force that acts perpendicular to the direction of airflow. It plays a central role in achieving and sustaining flight and in stabilizing various vehicles. Lift primarily originates from pressure differences created across surfaces, such as an airfoil. A lower pressure region forms above the wing, while a higher pressure region forms below it, generating an upward force. This differential results from the shape and orientation of the airfoil, enabling the wing...
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Flapping Soft Fin Deformation Modeling using Planar Laser-Induced Fluorescence Imaging
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Elastodynamic model for flapping-wing micro aerial vehicle.

Xin Fang1, Jianghao Wu1, Feng Du1

  • 1School of Transportation Science and Engineering, Beihang University, 100191 Beijing, People's Republic of China.

Bioinspiration & Biomimetics
|September 22, 2021
PubMed
Summary
This summary is machine-generated.

Lightweight micro air vehicles (MAVs) require understanding transmission mechanism deformation. This study develops an elastodynamic model and analytical formula to predict flapping motion, validated by FEM simulations.

Keywords:
elastodynamic modelfinite element methodflapping angleflapping-wing micro air vehiclekineto-elastostatic

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Area of Science:

  • Aerospace Engineering
  • Mechanical Engineering
  • Robotics

Background:

  • Lightweight design is crucial for micro air vehicle (MAV) efficiency and durability.
  • Reduced structural stiffness in lightweight MAVs can negatively impact mechanism motion.

Purpose of the Study:

  • To establish an elastodynamic model for flapping-wing MAVs (FMAVs).
  • To analyze the effect of transmission mechanism elastic deformation on flapping motion.

Main Methods:

  • Kineto-elastostatic analysis was used to build the elastodynamic model.
  • Inertial forces of the transmission mechanism were found to be negligible.
  • An analytical formula relating transmission mechanism deformation to flapping angle was derived.

Main Results:

  • The derived analytical formula accurately predicts flapping angles.
  • Finite element method (FEM) simulations validated the analytical formula's results.

Conclusions:

  • The elastodynamic model and analytical formula offer theoretical guidance for FMAV design.
  • Optimization of FMAV transmission mechanisms and flapping motion is facilitated by this research.