Dyle and Bacalan metal monoplane, D.B. 10 : night bomber - equipped with two 420 HP. Jupiter engines
A 1927 NASA technical report, the Aeronautical Technical Circular on the Dyle and Bacalan D.B.10, a French metal monoplane night bomber, issued for engineers and aviation researchers. The pictures are period photographs of the aircraft and its wing skeleton beside engineering line drawings with front, side and plan elevations. A designer could take the crisp mechanical linework and the stark, documentary composition of the photographs as a model for technical diagrams.

