In Partnership With

October 1, 1919

Fundamentals of Rigid Airship Design

Airplane Engine Vibration—ii

Propeller and Fuselage Air Pressure Inter-action

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Fundamentals of Rigid Airship Design

Rigid airships have made good. One may still criticize the rigid principle of design, but the double crossing of the Atlantic by the R-34 no one can deny. This unique system of construction developed by the energy and resources of a single man, was long ago taken up by a certain ambitious Government which early realized the importance of pushing the design to the limit, it at all.

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Airplane Engine Vibration—ii

Determining the degree of engine vibration resulting from torque reaction or torque variation is a complex problem. Since these vibrations appear coincident with those due to other sources it is practically impossible to distinguish them indvidually.

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Propeller and Fuselage Air Pressure Inter-action

The experimental work forming a basis for this paper was performed (by permission of the United States Navy) on a fast seaplane designed and built by the Gallaudet Aircraft Corp. for bombing service (Fig. 1). This machine has a nicely streamlined body, the uniformity of whose contour is broken only by two cockpit openings and the engine ventilation louvres.

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British Airplane and Seaplane Competition

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Civil Uses for Army Airships

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Some Interesting German Airplanes

A very interesting set of photographs has just reached AVIATION AND AERONAUTICAL ENGINEERING from a foreign correspondent and is reproduced herewith to afford airplane designers an opportunity to study the most recent products of our late enemies.
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Doping Airplane Linen

The purpose of this investigation was to determine the effect of various coatings of cellulose acetate dope upon airplane linen. Method—It was decided that the most natural way of determining the effect of dope on airplane linen would be to make up small planes similar to airplane wings and coat these in the same fashion.

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Editorials

The Aviette

210211

Editorials

Editorials

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Navv Aviator Device

September 151919 October 151919