NASA NTRS · 19900019215
Dynamic ground effects
Abstract
A research program is underway at the NASA Langley Research Center to study the effect of rate of descent on ground effects. A series of powered models were tested in the Vortex Research Facility under conditions with rate of descent and in the 14 x 22 Foot Subsonic Tunnel under identical conditions but without rate of descent. These results indicate that the rate of descent can have a significant impact on ground effects particularly if vectored or reversed thrust is used.
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Paulson, John W., Jr., Kemmerly, Guy T., Gilbert, William P.. 1990-04-01. Dynamic ground effects. https://ntrs.nasa.gov/citations/19900019215
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