Dornier "Superwal" commercial seaplane with : two Rolls-Royce "Condor" 600 HP. engines
This is a 1927 NASA aircraft circular issued through the NASA Technical Reports Server, describing the Dornier Superwal, a twin-engined commercial flying boat built in Germany for passenger and mail service over water. Its pictures are black-and-white photographs and engineering drawings of the hull, cabin layout, engine nacelle, and wing structure, showing how a designer might approach lightweight metal framing and a stepped flying-boat silhouette.
