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Digital Video Measurements Of Wing Deflections In A Wind TunnelSolid-state cameras and computer-controlled image-acquisition system measure deformations of wind-tunnel models. Digital video model-deformation (VMD) system includes solid-state-array cameras and digital image-acquisition system controlled by personal computer. Eliminates both vibration-induced distortion associated with tube cameras and manual processing of video hardcopy images necessary in earlier version. AT-class personal computer controls two commercially available image-capture boards ganged to capture simultaneously two video images, each 752 picture elements wide and 480 picture elements high, in one-thirtieth of second. Video images digitized into 256 gray levels. Figure block diagram of system.
Document ID
19890000501
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Burner, Alpheus W.
(NASA Langley Research Center, Hampton, VA.)
Snow, Walter L.
(NASA Langley Research Center, Hampton, VA.)
Goad, William K.
(NASA Langley Research Center, Hampton, VA.)
Childers, Brooks A.
(NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 14, 2013
Publication Date
October 1, 1989
Publication Information
Publication: NASA Tech Briefs
Volume: 13
Issue: 10
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
LAR-13917
Accession Number
89B10501
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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