Related Experiment Video
Updated: Oct 19, 2025
06:20
Flapping Soft Fin Deformation Modeling using Planar Laser-Induced Fluorescence Imaging
Published on: April 28, 2022
2.3K
Scalability of resonant motor-driven flapping wing propulsion systems
Mostafa R A Nabawy1,2, Ruta Marcinkeviciute1
1Department of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M1 3BB, UK.
Royal Society Open Science
|September 27, 2021
Summary
This study presents an integrated design process for resonant motor-driven flapping wing vehicles, optimizing propulsion systems for efficiency and scalability. Peak efficiency reaches 36% with specific motor masses and kinematics.
Area of Science:
- Aerospace Engineering
- Robotics
- Mechanical Engineering
Background:
- Flapping wing vehicles offer potential for efficient aerial locomotion.
- Developing scalable and high-performance propulsion systems remains a challenge.
Purpose of the Study:
- To develop an integrated conceptual design process for resonant motor-driven flapping wing propulsion systems.
- To assess the scalability and performance of these systems by analyzing key design variables.
Main Methods:
- Quasi-steady aerodynamic modeling based on wing geometry and kinematics.
- Second-order dynamic system modeling for mechanics with nonlinear damping.
- Standard motor equations for electrical domain analysis.
- Development of design scaling laws based on current technology.
Main Results:
- The design process integrates electrical, mechanical, and aerodynamic domains.
- Peak system efficiency of 30-36% achieved at motor masses of 0.5-1 g with constant angle of attack kinematics.
- Sinusoidal angle of attack kinematics requires more power but can increase peak efficiency by up to 15%.
Conclusions:
- The integrated design process provides insights into actuator size, mass fraction, and pitching kinematics effects.
- Optimized kinematics and motor mass are crucial for maximizing propulsion system efficiency in flapping wing vehicles.
Related Concept Videos
01:23Lift
277
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...
277
01:30Typical Model Studies
488
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
488
01:12Modeling and Similitude
380
Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
380
01:19Electro-mechanical Systems
1.3K
Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
1.3K
01:26Scaling
356
In designing and analyzing filters, resonant circuits, or circuit analysis at large, working with standard element values like 1 ohm, 1 henry, or 1 farad can be convenient before scaling these values to more realistic figures. This approach is widely utilized by not employing realistic element values in numerous examples and problems; it simplifies mastering circuit analysis through convenient component values. The complexity of calculations is thereby reduced, with the understanding that...
356
01:24Absolute Motion Analysis- General Plane Motion
298
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
298