Date of Award

Summer 2022

Document Type

Thesis - Open Access

Degree Name

Master of Aerospace Engineering

Department

Aerospace Engineering

Committee Chair

Dr. Alberto W. Mello

First Committee Member

Dr. Dae Won Kim

Second Committee Member

Dr. Ali Yeilaghi Tamijani

Abstract

Amphibian aircraft have seen a rise in popularity in the recreational and utility sectors due to their ability to take off and land on both land and water, thus serving a myriad of purposes such as aerobatics, surveillance, and firefighting. The design of such seaplanes requires to be both aerodynamically and hydrodynamically efficient, especially during the takeoff phase. In the past, naval architects have implemented ways to make boats, yachts, and large ships more efficient; one of them being the addition of chine strips and spray rails on the hull. This thesis study explores the possibility of implementing spray rails to improve the takeoff performance of an amphibian aircraft. Several spray rail configurations obtained from naval research were tested on a bare Seamax M22 amphibian hull to observe an approximate 10-25% decrease in water resistance at high speeds as well as a 3% reduction in the takeoff time. This study serves as a suggestion to modify the design of the Seamax M22 hull and a platform for detailed investigations in the future to improve modern amphibian design.

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