Operational considerations for aerodynamic testing of large-scale wing sections in a simulated natural rain environmentOne of the necessary areas of consideration for outdoor heavy rain testing is the effect of wind on both the simulated rain field and the quality and repeatability of the aerodynamic data. This paper discusses the data acquisition and subsequent reduction to nondimensional coefficients of lift and drag, with the appropriate correction for wind and rain field. Sample force data showing these effects are presented, along with estimates for accuracy and repeatability. The capability to produce high-quality data for rain drop size distribution using photographic and computerized image processing techniques was developed. Sample photographs depicting rain drop size are shown.
Document ID
19900039901
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Campbell, Bryan A. (NASA Langley Research Center Hampton, VA, United States)
Bezos, Gaudy M. (NASA Langley Research Center Hampton, VA, United States)
Dunham, R. Earl, Jr. (NASA Langley Research Center Hampton, VA, United States)
Melson, W. Edward, Jr. (NASA Wallops Flight Center Wallops Island, VA, United States)