Aerodynamics of a Bat in Forward Flight (IMAGE) American Institute of Physics Caption This is the time history of coherent vortex formation around the bat wing. Bottom plot shows lift and thrust coefficient variation for a flapping cycle over normalized time. Credit D. Tafti/VT Usage Restrictions This image may be used only with appropriate caption and credit. 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.