Robot flies like a bird

David Lentink, Professor of Biomimetics at the University of Groningen, has developed a robotic bird, modeled with real pigeon feathers, to explore this mystery. Previous studies by Lentink revealed that birds continuously adapt the shape of their wings and tail to stay stable. His latest research demonstrates that a robotic bird designed with these principles can replicate such movements effectively.

Toward Fuel-Efficient Aviation
The robotic bird, named "PigeonBot II," operates using an algorithm that controls nine servo motors. These motors adjust the feathers, allowing the robot to continuously modify its wing and tail shapes. This algorithm mimics reflexes believed to help birds stabilize their flight. Nearly a century ago, German scientist Franz Groebbels suggested that birds use such reflexive adjustments, likening their flight to "automatic airplanes." The successful testing of PigeonBot II in a wind tunnel and open-air settings supports this theory.

Lentink's work not only sheds light on bird flight mechanics but also has implications for aviation. His findings pave the way for designing more energy-efficient airplanes. "The European Airbus group has visualized a concept of such a plane. Our research provides the knowledge to make their ideas achievable," Lentink stated. Additionally, removing the vertical tailfin reduces a plane's radar signature, offering potential benefits for military jet operations.

Research Report:Bird-inspired reflexive morphing enables rudderless flight