Date of Award
Summer 1997
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Mechanical & Aerospace Engineering
Program/Concentration
Aerospace Engineering
Committee Director
Oktay Baysal
Committee Member
Robert E. Smith
Committee Member
Colin P. Britcher
Call Number for Print
Special Collections; LD4331.E535 C67
Abstract
First, a newly developed interactive surface generation tool is described for the conceptual design phase and aerodynamic shape optimization of aircraft. The new design tool is called Interactive Rapid Airplane Parametric Input Design (IRAPID) for fuselage and wing body configurations, and Blended Wing Body (BWB) generator for flying wing configurations. The development of the software is based on the RAPID methodology, which incorporates a partial differential equation approach to surface design. By incorporating physical airplane design parameters into the boundaty conditions of the partial differential equation, the solution surface of a wing configuration is generated. The construction of fuselage components is accomplished through algebraic equations. The results of the RAPID methodology provide the numerical representation of aerospace configurations as structured surface meshes which are suitable for a wide variety of computational fluid dynamics (CFD) analysis. Next, a grid sensitivity analysis is incorporated through automatic differentiation of the RAPID surface generation algorithm via an automatic differentiation tool, ADIFOR. The grid sensitivities of the RAPID model are calculated with respect to six airfoil design parameters and are validated against divided differences and analytical differentiation results to ensure accuracy. Both software components, IRAPID and BWB, are demonstrated to show new innovations in surface representation with automatic structured grid generation and grid sensitivity analysis. The new design tool is used in applications pertaining to conceptual aircraft design and aerodynamic shape optimization procedures.
Rights
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DOI
10.25777/53h7-dx75
Recommended Citation
Cordero, Yvette.
"Interactive Approach for Geometry Definition with Automatically Differentiated Sensitivities for Practical Airplane Design"
(1997). Master of Science (MS), Thesis, Mechanical & Aerospace Engineering, Old Dominion University, DOI: 10.25777/53h7-dx75
https://digitalcommons.odu.edu/mae_etds/454