iSTAR VTOL UAS

System Description

Originally conceived as a vertical takeoff and landing (VTOL) surveillance system, the intelligence gathering, surveillance, target acquisition and reconnaissance (iSTAR) unmanned aircraft system (UAS) has evolved through hundreds of hours of ground and flight testing. The design concept is simple and efficient and makes use of lightweight composite construction techniques. The structure is comprised of an outer duct enclosing the fan system, center body (avionics and subsystems), fixed stators, and movable vanes operated by actuators (thrust vectoring). The engine is housed in the center body, and fuel tanks are located in the forward section of the duct. A variety of payloads may be carried in either the nose, tail, or duct of the vehicle.

   LADF Enabling Technologies
   Light Structures (CC/Epoxy)
   Miniaturized Avionics/Actuators
   Advanced A/C Control Techniques
   Miniaturized Payloads
   Advanced T/W Propulsion Systems

Modes of Flight

Unlike other VTOL systems, the iSTAR UAS uses an airfoil-shaped duct to provide augmented lift during low- and high-speed cruise. Vehicle control is provided by thrust vectoring, resulting in a highly stable and controllable vehicle during all phases of flight.