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Effect of ground and ceiling planes on shape of energized wakes

Published 2011-08-19 From Legacy CDMS 1 author
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Attribution

This is the abstract and citation. Full text lives at NASA NTRS — we link out rather than host. All credit to the authors and Legacy CDMS.

Abstract

Verbatim from NASA NTRS. Not paraphrased, not summarized.

Results are presented from an investigation of the structure of energized wakes in the presence of ground or ceiling planes when powered-lift devices are tested at zero and low wind tunnel velocities. Solutions are presented to indicate how the presence of a nearby ground plane causes the energized wake to constrict less than when in free space. In contrast, another set of solutions indicate that the presence of a ceiling plane enhances wake construction so that the wake width is even smaller than when in free space. Hence, a ground plane tends to reduce the chance for interaction between the wake and the energizing elements, while a nearby ceiling plane tends to increase the likelihood for interference.

Author

  • Rossow, Vernon J. NASA Ames Research Center

Keywords

  • TRT-EXPERIMENTAL
  • POINT VORTEX METHOD
  • CEILING PLANES
  • ENERGIZED WAKES
  • FREE STREAM LINE THEORY

Citation: Rossow, Vernon J. (2011). Effect of ground and ceiling planes on shape of energized wakes. Legacy CDMS. NASA NTRS ID 19950036773. https://ntrs.nasa.gov/citations/19950036773 ↗