Seaplane Design: (was: Boeing B-314)

Date:         20 Nov 98 02:30:46 
From:         "P. Wezeman" <>
Organization: The University of Iowa
References:   1 2 3 4
Followups:    1 2
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	In order to stabilize the aircraft in an upright position when
it was floating on the water, the Boeing B-314, the Martin 130
China Clipper, and the Dornier DO-X used "sponsons", short stub-wings
extending sideways from the fuselage at the waterline. Other flying
boats of similar size, vintage and performance, such as the Short
Empire and Sunderland, used stabilizing floats at or near the wing tips
for the same purpose, and Martin used tip floats on their later Mars
flying boat.
	What are the pros and cons of the two devices, and what
considerations go into a designer selecting one or the other?

                             Thank you in anticipation,

                        Peter Wezeman, anti-social Darwinist

                             "Carpe Cyprinidae"