Structural details of the giant Dornier seaplane "Do X." Page: 3 of 30
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N.A.C.A. Technical Memorandum No. 546 PJa R2tr
material furnished by the Dornier Cog Vfi T ' in
General Description " Gt
The general design of the seaplane preserves the fundamental
characteristics of the previous Dornier seaplanes, the "Wal"
and the "Superwal." Nevertheless, each part presents special
details of form and structure.
The central hull has a marked V-shaped bottom at the bow
similar to a torpedo boat. Moreover, the lower part of the mid-
ship section is much broader than the upper part.
The central part of the nain wing is surmounted by an aux-
iliary wing which connects the six engine nacelles. The two wing
stubs projecting from the sides of the hull serve principally for
stability on the water, but also as supports for the three large
wing struts on each side of the hull.
The horizontal empennage is not of the monoplane type, there
being two stubs below parallel to the fixed horizontal stabilizer.
These stubs assist in supporting the large vertical balancers of
the rudder and the struts which support the horizontal stabilizer.
The controls of the tail surfaces and ailerons are rigid
steel tubes without welds, subjected only to tensile stresses.
The perfect balancing of the rudder and elevator enables the
pilot to operate the controls by hand without the application of
much force. In view of the rigid transmission for 30 m (98.4
ft.), we are led to admire the success of such a simple
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Gustosa, Corrado. Structural details of the giant Dornier seaplane "Do X.", report, October 1929; (digital.library.unt.edu/ark:/67531/metadc277413/m1/3/: accessed April 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.