VTOL vehicles are of great interest at the moment for urban air mobility because of their versatility. These vehicles have the ability to take-off and land without the necessity of a long runway, being compared to helicopters. However, their appeal is based on the fact that are considered a breakthrough over helicopters due to their efficiency in cruise flight, comparable to fixed wing aircrafts. For these reasons, VTOL vehicles reduce the expenses in complex facilities and improve performances from an efficiency point of view. Within this new technology field, NEOPTERA Ltd presents itself as one of the companies seeking to develop a civil VTOL vehicle for urban air mobility: the eOpter.