The Coanda effect at a ship (IMAGE) Chalmers University of Technology Caption One of the main sources of aerodynamic drag is the square-shaped back of the ship’s superstructure. The Chalmers researchers have created a superstructure design with convex edges and highly compressed air flowing through “jet slots”. The Coanda effect then allows the air pressure on the ship’s hull to be balanced out which, in turn, considerably reduces aerodynamic drag. Credit Chalmers University of Technology | Kewei Xu Usage Restrictions For media use License Original 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.