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Surface fitting three-dimensional bodiesThe geometry of general three-dimensional bodies was generated from coordinates of points in several cross sections. Since these points may not be on smooth curves, they are divided into groups forming segments and general conic sections are curve fit in a least-squares sense to each segment of a cross section. The conic sections are then blended in the longitudinal direction through longitudinal curves. Both the cross-sectional and longitudinal curves may be modified by specifying particular segments as straight lines or specifying slopes at selected points. This method was used to surface fit a 70 deg slab delta wing and the HL-10 Lifting Body. The results for the delta wing were very close to the exact geometry. Although there is no exact solution for the lifting body, the surface fit generated a smooth surface with cross-sectional planes very close to prescribed coordinate points.
Document ID
19760009747
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dejarnette, F. R.
(North Carolina State Univ. Raleigh, NC, United States)
Ford, C. P., III
(North Carolina State Univ. Raleigh, NC, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Publication Information
Publication: NASA. Langley Res. Center Appl. of Computer Graphics in Eng.
Subject Category
Computer Operations And Hardware
Accession Number
76N16835
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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