Print Email Facebook Twitter SAMID: An interactive System for the Analysis and Constrained Minimization of Induced Drag of aircraft configurations Title SAMID: An interactive System for the Analysis and Constrained Minimization of Induced Drag of aircraft configurations Author van den Dam, R.F. Institution National Aerospace Laboratory NLR Date 1982-12-31 Abstract An interactive computer program system has been developed which provides induced-drag analysis, optimization and configuration-design capabilities. The program system employs subsonic far-field (Trefftzplane) analysis, and novel mathematical formulations of the constrained optimization problems which are based on calculus of variations. The analysis and optimization technique, utilizing panel-method technology with piecewise quadratically varying bound-circulation, is fast, numerically stable and easy to use, and therefore is very suitable for interactive design piorposes in which rapid configuration trade-offs have to be made. The paper presents an outline of the induced-drag analysis and optimization technique, comparisons with other theories and the interactive design capability. Paper presented at the AIAA 21st Aerospace Sciences Meeting, January 10-13, 1983, Reno, Nevada. Subject subsonic flowwing spanoptimizationcalculus of variationspanel method (Fluid mechanics)vortex sheetsfar fieldsaircraft designaerodynamic configurationscomputerized designminimum dragaerodynamic dragcomputer programs To reference this document use: http://resolver.tudelft.nl/uuid:b9c9066f-c45a-4f9f-b813-bb9ec0e91b04 Access restriction Campus only Source NLR MP 82057 U Part of collection Aerospace Engineering Reports Document type report Rights (c) 1982 National Aerospace Laboratory NLR Files PDF 82057.pdf 13.39 MB Close viewer /islandora/object/uuid:b9c9066f-c45a-4f9f-b813-bb9ec0e91b04/datastream/OBJ/view