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Parametric design and gridding through relational geometryRelational Geometric Synthesis (RGS) is a new logical framework for building up precise definitions of complex geometric models from points, curves, surfaces and solids. RGS achieves unprecedented design flexibility by supporting a rich variety of useful curve and surface entities. During the design process, many qualitative and quantitative relationships between elementary objects may be captured and retained in a data structure equivalent to a directed graph, such that they can be utilized for automatically updating the complete model geometry following changes in the shape or location of an underlying object. Capture of relationships enables many new possibilities for parametric variations and optimization. Examples are given of panelization applications for submarines, sailing yachts, offshore structures, and propellers.
Document ID
Document Type
Conference Paper
Letcher, John S., Jr.
(AeroHydro, Inc. Southwest Harbor, ME, United States)
Shook, D. Michael
(AeroHydro, Inc. Southwest Harbor, ME, United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1995
Publication Information
Publication: NASA. Lewis Research Center, Surface Modeling, Grid Generation, and Related Issues in Computational Fluid Dynamic (CFD) Solutions
Subject Category
Computer Programming And Software
Accession Number
Funding Number(s)
CONTRACT_GRANT: N00167-95-C-0003
Distribution Limits
Work of the US Gov. Public Use Permitted.

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