March 19, 1923

ARMY AND NAVY AIR NEWS

Air Service

The Contest for Air Power in the Pacific

Non-dimensional Coefficients for Comparison of Airship Characteristics

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ARMY AND NAVY AIR NEWS

Air Service

General Mitchell Ends 5000-Mile Air Trip—Brig. Gen. William Mitchell, Assistant Chief of Air Service, landed at Bolling Field late on March 2 after completing a 5000-mile inspection of Air Service stations. General Mitchell left Washington on Jan. 21 by airplane.
318319

The Contest for Air Power in the Pacific

United States, Japan and Soviet Russia Competing for Hegemony in the Pacific

314315

Non-dimensional Coefficients for Comparison of Airship Characteristics

Engineering Staff, Zeppelin Airship Construction Co.

312313
Editorials

The Growing Air Forces

THAT Premier Mussolini should deem it necessary at this time to give Italy a separate air force is significant. It indicates that European states are recognizing the growing importance of air power for national defense. Premier Mussolini places the respective air strength of various countries as follows: France, United States, Great Britain, Russia, Belgium, and Jugo-Slavia, not including Italy.
320321

A Radio Address By Admiral Moffett

Naval Air Chief Talks on Air Power
322323

Recent Activities of the A.e.s., M.i.t.

The Aeronautical Engineering Society at the Massachusetts Institute of Technology has held several meetings during the present school year. An account of the first, held Nov. 15, 1922, has already appeared in AVIATION. The speakers for this meeting were Otto C. Koppen and Harry C. Karcher of the Society’s glider team, and Prof. E. P. Warner.
316317

Mr. Jaray’s Reply

The figures used in the table and the three diagrams for the ships not manufactured by the Zeppelin Works were taken from current aeronautical publications. Only such factors were used as appeared to be worthy of serious consideration, however, and wherever possible were furnished by the constructors themselves.
314315

Discussion By R. H. Upson

Mr. Jaray’s paper starts out with a statement of the value of non-dimensional characteristics. There is no arguing against that. It then develops coefficients for comparison (a) Propulsive efficiency. (b) Lift efficiency, (c) General efficiency.
320321

Bristol "Cherub" Engine for Small Aircraft

2 Cyl. Horizontal Opposed Type Develops 18 hp, for 85 lb. Weight
316317

Notices to Aviators

The new Boston Airport is located on land recently filled by the Commonwealth of Massachusetts between Jeffries Point, in East Boston, and Governors Island. It lies approximately one mile east of the State House dome. The field for the present will consist of two runways in the form of a T 1,500 ft. long.
March 121923 March 261923