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Preliminary parametric tail design for a pusher amphibious light sport aircraft
Mohamed, Omar
Mohamed, Omar
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URCAF_2026_Mohamed.pdf
Adobe PDF, 22.01 KB
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Issue Date
2026-04-24
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Keywords
Amphibious aircraft,T-tail,Cruciform tail,CAD,Aircraft design
Subjects (LCSH)
Citation
Mohamed, Omar; Lynch, Adam Carlton. 2026. Preliminary parametric tail design for a pusher amphibious light sport aircraft. -- In Proceedings: 25th Annual Undergraduate Research and Creative Activity Forum. Wichita, KS: Wichita State University.
Abstract
Introduction: Amphibious light sport aircraft present unique tail design challenges due to water operations, high-wing configurations, and possible pusher propulsion systems. Conventional tail configurations are often not feasible because of water interference during takeoff and landing. There is limited research comparing T-tail and cruciform tail configurations for pusher amphibious aircraft, particularly under stall conditions where tail effectiveness is critical. This study addresses this gap through an initial design investigation. Methodology: A parametric Computer-Aided Design (CAD) model was developed to explore tail configurations for an amphibious light sport aircraft sponsored by ILIOS Aerospace. Design variables included tail height, horizontal tail position, and geometric proportions based on aircraft sizing requirements. Two configurations were evaluated: T-tail and cruciform tail. The model enables rapid iteration and comparison of configuration feasibility based on geometric constraints and integration with a high-wing, pusher layout. Results: The parametric model successfully generated scalable tail configurations compatible with amphibious constraints. The T-tail configuration provided greater vertical separation from the wing and water surface, while the cruciform tail offered improved structural integration but reduced vertical clearance. Both configurations were feasible within initial sizing limits. Discussion: Results highlight key tradeoffs between tail clearance, integration, and potential control effectiveness. Unlike conventional aircraft, pusher configuration suggests improved tail exposure to airflow during stalls. Future work will include aerodynamic and structural analysis to evaluate stability, control, and performance.
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Description
Presented to the 25th Undergraduate Research and Creative Activity Forum (URCAF) held in Woolsey Hall, Wichita State University, April 24, 2026.
Publisher
Wichita State University
Journal
Book Title
Series
URCAF;v.25