Rumpler Twin-Hull Flying Boat

McTodd

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The thread on Great War projects reminded me to look at Fred Gutschow's 'Die Deutschen Flugboote', which has information on Rumpler's magnificent giant flying boat designs. So with great delight, I found a three-page article in Flight, on their wonderful web archive, which some of you may enjoy:

http://www.flightglobal.com/PDFArchive/View/1930/Untitled0%20-%201553.html

Attached are a couple of photos from the article of a model.
 

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Jemiba

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There are some more informations in "Edmund Rumpler - Wegbereiter in der
industriellen Flugzeugfertigung" by J.A.Kranzhoff, Bernard & Graefe (publisher).
(3-view as an example)
 

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Tony Williams

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These twin-hulled flying boats (actual and proposed) have always intrigued me. They seem a logical way of providing more stability on the water, but I do wonder about what happened on landing if one hull hit a wave while the other was still out of the water. I assume that the thing violently zig-zagged all over the place until both hulls were well into the water.
 

SlickDriver

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Tony -

I would say that the answers to your questions would be the Savoia-Marchetti S.55 that seemed not to have any such issues. Can't answer for larger aircraft but I have not seen any issues were reported
 

Tony Williams

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It would obviously depend on the roughness of the water. In smooth water such as a protected anchorage, no problem. Logic suggests that if the waves were big enough for only one hull to hit one, there would be a massive increase in drag on that hull, which would tend to slew the plane sideways unless the other hull got in the water quickly.
 

hesham

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Hi,

http://gallica.bnf.fr/ark:/12148/bpt6k9767475f/f584.image
 

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hesham

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Hi,

http://www.philsp.com/data/images/m/modern_mechanics_and_inventions_192903.jpg
 

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