The increasing use of Wireless Sensor Nodes (WSNs) requires a reliable and efficient power source. Energy harvesting from ambient sources, such as airflows, is a promising solution. Miniature wind turbines can be used to power WSNs, but their efficiency is limited by their small size. The power coefficient of small turbines is typically low, around 10-30%, due to the low Reynolds numbers and laminar flow near the blades. To improve efficiency, researchers have explored biomimicry, using nature-inspired designs such as whale flippers and owl wings. The maple seed specimen is particularly interesting, with a power coefficient of 59% at Reynolds numbers similar to those of centimetre-scale turbines. By reverse-engineering the maple seed design, researchers aim to create more efficient turbine blades. The study presents the design process, fabrication, and performance testing of a miniature wind turbine inspired by the maple seed. Preliminary results show promising performance, with potential applications in powering WSNs and other small devices. Further research is needed to optimize the design and improve efficiency, but biomimicry offers a promising approach to advancing miniature wind turbine technology.
Enhancing the capabilities of small-scale wind turbines, typically measuring in centimeters, by incorporating designs and principles inspired by nature.
