A news report about the USS Iowa gun turret explosion in 1989.
Urban Aeronautics AirMule Hovering
Israel's Urban Aeronautics has released video showing its AirMule ducted-rotor vertical take-off and landing (VTOL) unmanned aicraft hovering during development testing. The AirMule has fore and aft ducted rotors with vanes above and below the rotors that provide flight control in vertical and forward flight. Ducted fans at the rear will provude forward thrust. The AirMule is designed to operated in confined spaces, such as streets, where a helicopter's exposed rotors would be a safety risk. Proposed missions include unmanned casualty evacuation.