Use double quotes to find documents that include the exact phrase: "aerodynamic AND testing"

New research in aerodynamics is shedding light on the key to those sneaky float serves in volleyball. Using a wind tunnel and hitting robot, researchers noted the pattern of panels on the ball presents an asymmetric surface to the flow of air, leading to unpredictable flight patterns. Switching from the standard panel arrangement to a hexagonal or dimpled pattern may improve the ball’s consistency of flight.