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Investigation of a moving-model technique for measuring ground effectA ground-based testing technique is under development for the measurement of dynamic or time-dependent ground effects which may be present during aircraft approach and landing. The technique utilizes a model moving horizontally over an upwardly-inclined ground plane to simulate rate of descent. Results were obtained in the Langley Research Center (LaRC) Vortex Research Facility (VRF) for a generic 60 delta wing and for an F-18 configuration, both with and without thrust reversing, at forward speeds up to 100 ft/sec. These same models and support hardware were also tested in the LaRC 14 by 22 Foot Subsonic Tunnel at identical conditions (but without rate of descent) with and without a moving-belt ground plane to obtain data for comparison.
Document ID
19890004846
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Kemmerly, Guy T. (NASA Langley Research Center Hampton, VA, United States)
Paulson, John W., Jr. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1989
Subject Category
Aerodynamics
Report/Patent Number
NASA-TM-4080
L-16481
NAS 1.15:4080
Accession Number
89N14217
Funding Number(s)
PROJECT: RTOP 505-61-71-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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