The purpose of this study was to identify any potential limitations of Roskam’s statistical aircraft flight performance estimation method, and to provide processes capable of improving those limitations. This project was conducted in collaboration with Diamond Aircraft Industries, and as any other general aviation manufacturer with limited time, manpower, and financial resources, Diamond wants the new process to be time and cost-effective. Presented in this study is a computational alternative that combines the speed and accuracy of low-order panel methods with the fully-coupled viscous/inviscid interaction method from the ISES code that was developed by Drela and Giles. Its benefit is the ability to optimize aerodynamic parameters that are ignored by statistical methods, such as multiple taper ratios, aerodynamic and geometric twist. Most notably, cost of this method is dramatically reduced by separating the computational domain into a separate one for lifting surfaces and one for fuselages.
","abstract_html":"<p>The purpose of this study was to identify any potential limitations of Roskam’s statistical aircraft flight performance estimation method, and to provide processes capable of improving those limitations. This project was conducted in collaboration with Diamond Aircraft Industries, and as any other general aviation manufacturer with limited time, manpower, and financial resources, Diamond wants the new process to be time and cost-effective. Presented in this study is a computational alternative that combines the speed and accuracy of low-order panel methods with the fully-coupled viscous/inviscid interaction method from the ISES code that was developed by Drela and Giles. Its benefit is the ability to optimize aerodynamic parameters that are ignored by statistical methods, such as multiple taper ratios, aerodynamic and geometric twist. Most notably, cost of this method is dramatically reduced by separating the computational domain into a separate one for lifting surfaces and one for fuselages.</p>","abstract_has_math":false,"creators":["Lebovic, Igor"],"institution":null,"degree_name":"Master of Science in Aerospace Engineering","degree_level":"Thesis - Open Access","degree_discipline":"Aerospace Engineering","degree_department":null,"school":null,"contributors":["Charles N. Eastlake","Richard Anderson","Axel Rohde"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2004,"date_issued":"2004-04-01T08:00:00Z","date_published":"2004-04-01T08:00:00Z","updated_at":"2026-07-27T19:25:29Z","subjects":["aircraft design","numerical methods","statistical method","Aeronautical Vehicles","Aviation"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://commons.erau.edu/db-theses/117","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Charles N. Eastlake","Richard Anderson","Axel Rohde"]},{"key":"dc:creator","label":"Author","values":["Lebovic, Igor"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Aerospace Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis - Open Access"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Aerospace Engineering"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["aircraft design","numerical methods","statistical method","Aeronautical Vehicles","Aviation"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://commons.erau.edu/db-theses/117"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The purpose of this study was to identify any potential limitations of Roskam’s statistical aircraft flight performance estimation method, and to provide processes capable of improving those limitations. This project was conducted in collaboration with Diamond Aircraft Industries, and as any other general aviation manufacturer with limited time, manpower, and financial resources, Diamond wants the new process to be time and cost-effective. Presented in this study is a computational alternative that combines the speed and accuracy of low-order panel methods with the fully-coupled viscous/inviscid interaction method from the ISES code that was developed by Drela and Giles. Its benefit is the ability to optimize aerodynamic parameters that are ignored by statistical methods, such as multiple taper ratios, aerodynamic and geometric twist. Most notably, cost of this method is dramatically reduced by separating the computational domain into a separate one for lifting surfaces and one for fuselages.
"]},{"key":"dc:title","label":"Title","values":["Improving the Capability of Preliminary Aircraft Design Methodology by Incorporating Numerical Methods into Segments of a Proven Statistical Method"]}]}],"canonical_facts":{"dc:contributor":["Charles N. Eastlake","Richard Anderson","Axel Rohde"],"dc:creator":["Lebovic, Igor"],"dc:description.abstract":["The purpose of this study was to identify any potential limitations of Roskam’s statistical aircraft flight performance estimation method, and to provide processes capable of improving those limitations. This project was conducted in collaboration with Diamond Aircraft Industries, and as any other general aviation manufacturer with limited time, manpower, and financial resources, Diamond wants the new process to be time and cost-effective. Presented in this study is a computational alternative that combines the speed and accuracy of low-order panel methods with the fully-coupled viscous/inviscid interaction method from the ISES code that was developed by Drela and Giles. Its benefit is the ability to optimize aerodynamic parameters that are ignored by statistical methods, such as multiple taper ratios, aerodynamic and geometric twist. Most notably, cost of this method is dramatically reduced by separating the computational domain into a separate one for lifting surfaces and one for fuselages.
"],"dc:identifier":["https://commons.erau.edu/db-theses/117"],"dc:subject":["aircraft design","numerical methods","statistical method","Aeronautical Vehicles","Aviation"],"dc:title":["Improving the Capability of Preliminary Aircraft Design Methodology by Incorporating Numerical Methods into Segments of a Proven Statistical Method"],"thesis:degree_discipline":["Aerospace Engineering"],"thesis:degree_level":["Thesis - Open Access"],"thesis:degree_name":["Master of Science in Aerospace Engineering"]},"updated_at":"2026-07-27T19:25:29Z"}