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NASA NTRS · Conference Paper

Effects of ground proximity on a low aspect ratio propulsive wing/canard configuration

Published 2013-08-29 From Legacy CDMS 2 authors
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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.

The effect of near proximity to the ground are investigated on a low aspect ratio propulsive wing/canard concept at STOL conditions. Data were obtained on a wing/body and wing/body/canard configuration at various heights above the ground, ranging from free air to approximately 1/4 of the mean aerodynamic chord (MAC) above the ground. The data presented and discussed include force and moment coefficients, surface pressure distributions, and downwash angles measured one MAC behind the wing. The test technique, model requirements, and special considerations required for testing these configurations are also discussed. Special model requirements included evenly distributed exit nozzle pressures along four separate nozzles of lengths of one and two feet with only one air supply to the model. Test techniques must recognize and deal with the ground boundary layer as well as the air supply pressure measurement and management.

Authors

  • Stewart, V. R. Rockwell International Corp.
  • Kemmerly, G. T. NASA Langley Research Center

Citation: Stewart, V. R., Kemmerly, G. T. (2013). Effects of ground proximity on a low aspect ratio propulsive wing/canard configuration. Legacy CDMS. NASA NTRS ID 19870014989. https://ntrs.nasa.gov/citations/19870014989 ↗