eVTOL versus “eCOPTER” Hans-Christian Stuber, UASystems SA, Payerne/Switzerland 12. February 2022 In its 2018 paper “The Future of Vertical Mobility”, Porsche Consulting writes that eVTOLs are 4x quieter, have 15x higher reliability, are 2x safer, and are 10x cheaper than helicopters. The Vertical Aerospace homepage states that their VX4 is 100x quieter in cruise and...Read More