Innovative wind machines. Report for 1 Mar--31 aug 1975
This report describes theoretical and experimental research concerning the evaluation of two concepts for wind (energy conversion) machines. The first concept is that of a vortex concentrator: a high-lift vertical airfoil in the ambient wind generates a trailing vortex which has its energy harnessed by a relatively small high-speed turbine located just downstream of the wing tip. The device concentrates wind energy so that for a given size turbine the potential power output is greatly increased. Work summarized in this report includes a partial review of available papers on the subject of wing trailing vortices, and some calculations concerning the anticipated output of such a device. Future theoretical and experimental efforts on this project are also discussed. The second concept described is that of a vertical axis panemone device with circulation controlled airfoils for the blades. A preliminary theoretical analysis utilizing strip theory has shown the effect of different design features on its operation, and has led to the design of a test model. The configuration, instrumentation, and control systems of the test model are discussed. Also contained is an outline for a more exact flow theory, which properly takes into account the unsteady aerodynamics involved. (GRA)
- Research Organization:
- West Virginia Univ., Morgantown (USA). Dept. of Aerospace Engineering
- OSTI ID:
- 7247081
- Report Number(s):
- PB-252617
- Country of Publication:
- United States
- Language:
- English
Similar Records
Innovative wind machines. Executive summary and final report
AIAA Applied Aerodynamics Conference, 8th, Portland, OR, Aug. 20-22, 1990, Technical Papers. Parts 1 2