Six-passenger quadcopter simulation looking at the interaction of airflow between its four rotors. In the background, changes in pressure oscillation are seen: white areas show low pressure oscillation and grey areas indicate high pressure oscillation. This simulation was run by NASA as part of its Advanced Air Mobility (AAM) Mission. This mission aims to develop air transportation systems using new aircraft technologies. This simulation was carried out using the Pleiades and Electra supercomputers at NASA's Ames Research Center, California, USA.