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Technical Paper

Exploratory Applications of New Aerodynamic Control Devices

1995-05-01
951429
A new class of aerodynamic control devices have recently been designed specifically for wind turbine applications. These new controls were tested to evaluate their effectiveness in modulating wind turbine power output and for slowing or stopping a wind turbine in high wind or loss of generator situations. While these control devices were developed specifically for wind turbine applications, there exists the possibility that alternate aviation uses exist. In particular, these trailing-edge control devices were evaluated for reducing aircraft landing distances, generating rapid rates of descent, deep stall or spin recovery and for high angle of attack control.
Technical Paper

High-Lift Airfoil Section for Low Reynolds Number Application

1995-09-01
951978
A high lift, low Reynolds number airfoil section has been designed, built, and tested for a Short Take-Off and Landing (STOL) aircraft configuration. The wing incorporating this airfoil section was augmented with a full span non-adjustable external flap, and a partial span adjustable spoiler. Optimum configuration for the flap and spoiler were determined experimentally at Wichita State University's low speed wind tunnel. Flight test of this configuration indicated excellent lift carrying capability.
Technical Paper

Novel and Inexpensive Method of Performing Dynamic Wind Tunnel Model Testing

1995-09-01
951988
An investigation was performed to evaluate a novel and inexpensive wind tunnel model mount for dynamic aerodynamic testing. A computer analysis code was developed to identify the dimensions of the control surface needed to produce a desired pitching motion for a delta wing. The code was then used to design and build a dynamic model apparatus that was evaluated in a low speed wind tunnel at Wichita State University. The dynamic model mount and control were evaluated for a variety of motions, including constant pitch rate ramps, constant frequency oscillations and impulse or step inputs. Results from the ramp and oscillation test indicated the system is very responsive and capable of a wide range of motion.
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