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.
","abstract_html":"<p>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.</p>","abstract_has_math":false,"creators":["Bahulekar, Soham"],"institution":null,"degree_name":"Master of Aerospace Engineering","degree_level":"Thesis - Open Access","degree_discipline":"Aerospace Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-07-01T07:00:00Z","date_published":"2022-07-01T07:00:00Z","updated_at":"2026-07-27T19:25:10Z","subjects":["spray rails","takeoff","performance","amphibian","aircraft","Aerodynamics and Fluid Mechanics","Aeronautical Vehicles"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://commons.erau.edu/edt/670","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Bahulekar, Soham"]}]},{"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 Aerospace Engineering"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["spray rails","takeoff","performance","amphibian","aircraft","Aerodynamics and Fluid Mechanics","Aeronautical Vehicles"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://commons.erau.edu/edt/670"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["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.
"]},{"key":"dc:title","label":"Title","values":["Effect of Spray Rails on Takeoff Performance of Amphibian Aircraft"]}]}],"canonical_facts":{"dc:creator":["Bahulekar, Soham"],"dc:description.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.
"],"dc:identifier":["https://commons.erau.edu/edt/670"],"dc:subject":["spray rails","takeoff","performance","amphibian","aircraft","Aerodynamics and Fluid Mechanics","Aeronautical Vehicles"],"dc:title":["Effect of Spray Rails on Takeoff Performance of Amphibian Aircraft"],"thesis:degree_discipline":["Aerospace Engineering"],"thesis:degree_level":["Thesis - Open Access"],"thesis:degree_name":["Master of Aerospace Engineering"]},"updated_at":"2026-07-27T19:25:10Z"}