The UK-based Hybrid Air Vehicles (HAV), the maker of the world's longest aircraft Airlander 10, has received an over £1 million grant to make electric propulsion technologies using the aircraft as the initial platform. The project, named E-HAV1 will deliver a full-sized prototype 500kW electric propulsor, HAV said. Earlier in January, Airlander 10 prototype was retired post successful testing.