September 15, 1920

Properties of Special Types of Radiators

Safety in Flight

Aeromarine Model 40 Hull Test

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Properties of Special Types of Radiators

In respect to the relation of power absorbed to power dissipated, flat plate radiators have been found to be markedly superior to other types commonly employed, for use in unobstructed positions on airplanes flying at the higher speeds.

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Safety in Flight

Comparatively brief though the period of post-war civil aviation has been, it has taught many valuable lessons, and has sufficed to demonstrate that, as far as safety is concerned, flying may be placed on an equal footing with any method of transport involving high speed.
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Aeromarine Model 40 Hull Test

The tests were made in accordance with instructions received from the Bureau of Construction and Repair and are inserted in the appendix of this report. To simulate flying condition the hull was suspended by means of the flying wires attached to the hull and the whole arrangement constructed so that the hull would be balanced at the center of pressure for low speed.
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The Design of Monocoque Fuselages

In airplane evolutions involving turning about a horizontal lateral axis the flexure stresses are a maximum in the upper and lower surfaces of the fuselage and the shear stresses are a maximum along the neutral or mid-section where the flexural stresses are zero.

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A New High Performance Wing

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The Laird “Swallow”

A consideration of the present cost of operations of commercial aircraft, as well as of the airdrome conditions throughout the country shows that the successful commercial airplane must be one which will have a thorougly reliable engine with a minimum of upkeep costs.
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Editorials

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N. A. C. A. Reports

NOMENCLATURE FOR AERONAUTICS. Synopsis of Report No. 91, National Advisory Committee for Aeronautics. This nomenclature and list of symbols were approved by the Executive Committee of the National Advisory Committee for Aeronautics, for publication as a technical report on April 1, 1920, on recommendation of the Subcommittee on Aerodynamics.
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Trade Reviews

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Book Review

September 11920 October 11920