Annual report - National Advisory Committee for Aeronautics (1915)
United States. National Advisory Committee for Aeronautics · Washington, U.S. Govt. Print. Off · leaf 471
460 REPORT NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS ll. Alternating Current Tachometer (d) Rugged indicator. — It is common experience that delicate electrical instruments will not withstand vi¬ This instrument consists of an alternating current bration of the severity found on instrument boards… … Figure 14.— Horn d.c. electric tachometer. terial. In general, the ruggedness of an instrument of usually of cobalt steel. As the rotor of the generator a given design decreases with increase in its sensitivity. revolves there is induced in the stator windings an It is therefore important that the…
Aeronautics · Aeronautics, Military · United States. National Advisory Committee for Aeronautics · Aeronautics -- United States -- Periodicals · Aeronautics, Military -- United States -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
