No obstante Buscando por ahi, he encontrado algo, un UCAV VTOL que puede ser interesante para nuestros intereses... solo es un proyecto
A new UCAV concept being developed may very well visually resemble and have similar flight characteristics of the "black triangles" so prevalent in UFO-lore.
The VTOL concept is called the "Unmanned Combat Hybrid Armed Vehicle" and will utilize an oil-less Rolls Royce turbofan engine system that propels the craft horizontally and powers hybrid-electric VTOL lift fans as well as powering sensor arrays and directed-energy weapons (ie solid state lasers).
This particular vehicle concept could match the "best of both worlds" scenario so covetted by the DoD in it's 2006 Quadrennial Defense Review. Those two worlds being rapid strike and endurance over the target area.
According to aerospace giant Rolls Royce sources the "Unmanned Combat Hybrid Armed Vehicle's" flight speeds could reach upwards of Mach 6 or 7 should the turbofan be augmented by combined-cycle propulsion (ramjet cycling to scramjet for supersonic speeds and beyond). Technology for on-station endurance exceeds 30 hours for a persistent area denial presence or for ISR functions, but that time will eventually increase to 3 to 7 days.
Defense industry companies associated with this concept include Rolls-Royce's Libertyworks, Northrop-Grumman, Lockheed and SonicBlue Aerospace.
Very little information seems to be available on this concept beyond Sonic Blue's web site, various defense contractor email exchanges and one or two aerospace publications.
Un saludo
teledirijido 
sin que haga falta tener uno tipo helicoptero que a lo mejor son más limitados...