November 15 1916 | Aviation Week

Tests on Air-Speed Meters*

In the tests made at the Massachusetts Institute of Technology, the following instruments were calibrated, and an attempt was made to determine the nature of the errors they presented: 1. The Ogilvie Air-Speed Indicator. 2. The Foxboro Indicator.

By S. J. Zeigler13 min

254

Course in Aerodynamics and Airplane Design

Biplane Combinations

By Alexander Klemin,T. H. Huff11 min

252

The Sturtevant Model 5A, Type 8, 140 H.P. Aeronautical Engine

The latest design of the Sturtevant aeronautical engine, manufactured by the B. F. Sturtevant Company, Hyde Park, Boston, Mass., is known as Model 5A, Type 8. By an extensive use of aluminum alloys, a saving of approximately 132 pounds in weight has been effected over the previous 140 horsepower models.