More Wind Tunnel Tests Planned For Ducted-Fan Propulsion System.
Aviation Week (2/11, Warwick) reported, "American Dynamics Flight Systems will wind tunnel test the ducted-fan propulsion system for its proposed AD-150 vertical-takeoff-and-landing unmanned aircraft with support from the University of Maryland (UMD)." A scale version of the High Torque Aerial Lift (HTAL) was wind tunnel tested at the UMD last year, but a larger "1/3-1/2 scale" will now "be tested at different fan speeds, duct angles and tunnel speeds representative of the transition between vertical and horizontal flight." The aircraft is "a shaft-driven ducted fan that provides vertical lift, directional control and propulsion. The swiveling nacelles are mounted at the tips of the AD-150's wing, with the fans driven from a turboshaft engine mounted in the fuselage."
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