Dragonfly drone in flight (IMAGE) University of South Australia Caption A whimsical 200 mm wingspan biomimetic dragonfly drone in flight. Large, directly driven, corrugated wings are as efficient as fixed wings on drones with a much larger wingspan. Credit University of South Australia Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.