In Partnership With

July 1, 1931

Airplane and Engine Specifications

Three Commercial Autogiros

The A.S.M.E. Discusses Aeronautics

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Airplane and Engine Specifications

Aeromarine Klemm Corp. Aeromarine Klemm Corp. Aeromarine Klemm Corp. Aeronautical Corp. of America Aeronautical Corp. of America Aeronautical Corp. of America Alexander Aircraft Co. Alexander Aircraft Co. Alexander Aircraft Co. Alexander Aircraft Co.
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Three Commercial Autogiros

The Pitcairn and Kellett machines,—a comparative study of their proportions and structure

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The A.S.M.E. Discusses Aeronautics

A report of the Fifth Annual Technical Meeting at Baltimore

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The Air Corps’ Mass Migration

Its significance to the Army and to the industry

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Flying Versus Transportation

Efficiency and economy are being sacrificed today on the high altar of Speed. Captain Courtney’s long association with transport problems makes his analysis particularly pertinent at this time when operators are seeking every possible means to stem the tide of red ink.

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Aeronautic Progress and the N.A.C.A.

For the first time in aerodynamic research history, tests of a full scale airplane are to be made in a wind tunnel sufficiently large for this purpose. This tunnel, which is by far the largest in the world, has just been completed at Langley Field and, together with a recently constructed towing basin, also of gigantic proportions, was dedicated during the recent N.A.C.A. Conference.

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EDITORIALS

Well Done!

THE maneuvers went through according to schedule. The Air Force assembled in Dayton from the four corners of the country. It flew to Chicago, the Atlantic Coast, to Washington, and back to its several stations. It did all that in almost exact accordance with the schedule planned long in advance.
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EDITORIALS

What’s in Aviation ... and Why

THE aviation industry has undergone great changes in the last year, and we have modified our own form and content to keep pace. Careful analysis, backed by fifteen years of experience in aeronautical publishing, has led us to a succession of innovations.
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Technical Abstracts

Strength of Continuous Beams

A METHOD OF CALCULATING THE ULTIMATE STRENGTH OF CONTINUOUS BEAMS, by J. A. Newlin and Geo. W. Tracer; N.A.C.A. Technical Report No. 347. IN employing the usual theory of three moments to calculate maximum load conditions, it is assumed that the relation of moments does not change when the elastic limit of the material is passed.
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The Chamber’s Safety Conference Project

An important step towards a worthy goal

June 11931 August 11931