Smallest Monocopter (IMAGE) University of Maryland Caption This is the smallest monocopter built by Ulrich to-date, with a maximum dimension of 9.5 cm and a wing equal in size to a natural samara. Credit Photo by Evan Ulrich/A. James Clark School of Engineering, U-Md. 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.