Abstract
This paper presents results of a study related to conceptual design and sizing of an amphibian passenger transport aircraft for connecting some coastal cities and islands in south India. The operating requirements for the seaplane were based on a recently published feasibility study for the island-coast connecting market for transport and tourism purposes in South India. Based on a study of the design data related to existing seaplanes, DHC-6 Twin Otter was taken as a baseline aircraft, and redesigned to meet the requirements. The paper describes the procedure used for arriving at the values of key parameters of the aircraft, sizing of the various components, and estimation of the drag and weight breakdown. It was seen that the requirements on Landing Distance and Missed Approach Gradient dictated the Wing and Power loading, and the aircraft met or exceeded all the design requirements that were specified.
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