Robotic pigeon demonstrates flight stability without vertical tail fin

A new robotic pigeon, PigeonBot II, has demonstrated how birds fly without vertical tail fins. This design could lead to more fuel-efficient aircraft by reducing drag. The robot mimics bird tail movements to maintain stability in flight. Previous models relied on traditional aircraft tails, but PigeonBot II uses a bird-like tail with 52 real feathers. Its success comes from programmed reflexive tail movements that stabilize the robot, similar to how real birds fly. Researchers believe this technology could eliminate the need for vertical tails in passenger aircraft, potentially lowering weight and fuel consumption. Further research is needed to adapt this solution for larger aircraft.