AeroVironment (AV) showcased two new rotary-winged vertical take-off and landing (VTOL) unmanned aircraft systems (UASs) at the DSEI 2019 defence exhibition in London, as it looks to secure its first non-US sales for the aircraft. Speaking to Jane’s on the opening day of the event on 10 September, a company representative said that with the US Department of Defense (DoD) already fielding the Vapor 35 and larger Vapor 55 UASS