Montblack,

Really loud, really old design. But they are kind of cool. We have the
last German flying one at our field. Actually, some of the links you
post seem to show a smaller, different type.

The single engine variant is the Do-27
http://www.do27.com/do27/index.htm.

And the (very much) modernized and much bigger follow-up is the Do-228
http://www.dornier228.de/.

--
Thomas Borchert (EDDH)