Annual report - National Advisory Committee for Aeronautics
This annual report was issued by the United States National Advisory Committee for Aeronautics in Washington in 1915 for government officials, engineers and military readers interested in flight research. The two plates are a plain line diagram of a cylinder inside a housing beside a partial section, and a photograph of a Fairchild 22 biplane with slot-lip ailerons mounted in a full-scale wind tunnel, with its propeller and struts sharply outlined against a hangar framework, offering designers crisp technical linework and industrial aviation imagery.
