US Navy helps finance Israeli "rotorless" helicopter The aircraft's developer, Urban Aeronautics, is on the brink of signing a collaboration agreement with US company Bell Helicopter. Amnon Barzilai 20 Jul 06 20:37 Lod-based Urban Aeronautics Ltd. is about to sign a cooperation agreement with Bell Helicopter for the delivery of helicopters to all branches of the US armed forces. At this stage, the company has obtained financing to develop its vertical-take-off and landing (VTOL) aircraft, a "rotorless" helicopter, for the US Navy. This week, the company unveiled a model of its helicopter at the Farnborough Air Show in the UK...