Related Experiment Video
Updated: Feb 27, 2026

08:24
Sit-to-stand-and-walk from 120% Knee Height: A Novel Approach to Assess Dynamic Postural Control Independent of Lead-limb
Published on: August 30, 2016
10.8K
Design and analysis of aerodynamic force platforms for free flight studies
Ben J Hightower1, Rivers Ingersoll, Diana D Chin
1Equal work.
Bioinspiration & Biomimetics
|July 11, 2017
Summary
Researchers developed a novel aerodynamic force platform to measure forces from flying animals and robots. This technology enhances understanding of flapping wing aerodynamics for bioinspired robot design.
Area of Science:
- Biomechanics
- Robotics
- Aerodynamics
Background:
- Understanding the aerodynamic forces of flapping wings is crucial for both biological research and the development of bioinspired robots.
- Existing methods may not capture the full complexity of in vivo force generation during natural locomotion.
Purpose of the Study:
- To introduce and explain advancements in the design of a novel aerodynamic force platform.
- To enable direct measurement of aerodynamic forces generated by freely flying animals and robots.
Main Methods:
- Designed a stiff yet lightweight aerodynamic force platform with natural frequencies significantly higher than operational frequencies.
- Filtered out high-frequency noise during post-processing to achieve accurate force recordings.
- Demonstrated the platform's capability by measuring forces from a freely flying bird.
Main Results:
- The new platform allows for precise and accurate in vivo measurement of aerodynamic forces.
- High natural frequencies enable effective noise filtering for clear data acquisition.
- The design principles are adaptable to various fluid media.
Conclusions:
- The aerodynamic force platform offers a powerful tool for high-throughput, real-time, non-intrusive biomechanical measurements.
- This technology can advance experimental biology and bioinspired design by studying diverse locomotion in multiple fluid environments.
- Facilitates comparative studies of force generation in animals and robots across terrestrial, aquatic, and aerial behaviors.
Related Concept Videos
Lift
594
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...
594
Free Body Diagrams: Examples
15.6K
Solving problems that involve forces is easy using free-body diagrams. A free-body diagram is a sketch showing all the external forces that are acting on an object or system. The object or system is represented by a single isolated point (or free body). Only those forces acting on it that originate outside of the object or system—the external forces—are shown. The forces are represented by vectors extending outward from the free body. Imagine a person sitting on a chair. Here, the...
15.6K
Free-body Diagrams: Problem Solving
1.8K
Free-body diagrams are essential tools for physicists and engineers studying the motion of objects. Free-body diagrams are graphical representations of the object or system under consideration, and they focus solely on the essential forces acting on the object. This tool helps break down complex problems into simpler models that are easier to understand and solve.
For example, consider a block with a mass of 10 kg released on an inclined plane at an angle of 30° to the horizontal, where...
For example, consider a block with a mass of 10 kg released on an inclined plane at an angle of 30° to the horizontal, where...
1.8K
Two-Dimensional Force System: Problem Solving
1.4K
Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
1.4K
Hydrostatic Pressure Force on a Plane Surface
2.0K
When a plane surface is submerged in a fluid, hydrostatic forces develop on the surface due to the fluid's pressure. For horizontal surfaces, the pressure exerted by the fluid is uniform because the depth remains constant. The resultant force is determined by the pressure at the given depth multiplied by the area of the surface, and it acts through the centroid of the surface. For vertical surfaces, the pressure varies with depth, increasing as the distance from the fluid's free surface...
2.0K
Drag Force and Terminal Speed
3.5K
An interesting force in everyday life is the force of drag on an object when it is moving in a fluid. Like friction, the drag force always opposes the motion of an object. Unlike simple friction, the drag force is proportional to some function of the velocity of the object in that fluid. This functionality is complicated and depends upon the shape of the object, its size, its velocity, and the fluid it is in. For most large objects, such as cyclists, cars, and baseballs, that are not moving too...
3.5K

