July 1, 1917

July 1, 1917

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A French Aviator’s Message to America

By Lieut, de la Grange11 min

The Power Plant From the Consideration of Airplane Performance

By Donald W. Douglas9 min

Glue for Use on Airplanes

By Percy A. Houseman7 min

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A French Aviator’s Message to America

At this time, when you are preparing to make the greatest effort in aviation that has been made so far by any country, I would like to tell you why I have such confidence in your undertaking, and what great results one has a right to expect from it.

By Lieut, de la Grange11 min

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The Power Plant From the Consideration of Airplane Performance

Aeronautical Engineer, S.S.L. The question of the power of the engine which will best give the performance desired for certain specified duties of a military airplane is one which has been subject somewhat to conjecture, in particular, by those developing engines.

By Donald W. Douglas9 min

494495

Glue for Use on Airplanes

There are many parts of an airplane that require the use of an adhesive material. Of these may be mentioned “ airscrews (the collective name for propellers and tractors), hollow spars, booms, ribs plywood, etc. For some of the small parts, such as the ribs, which are "subsequently covered by “doped” fabric, it is not necessary to use the best quality of glue.

By Percy A. Houseman7 min

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Course in Aerodynamics and Airplane Design

In designing tension members for the body, no feature is of greater importance than the choice of terminal fastenings which will permit the development of as large a percentage as possible of the true strength of the wire or other tension member.

By Alexander Klemin,T. H. Huff7 min

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Spark Gaps in Series with Spark Plugs

The history of the spark gap goes back to about 1900. Racing drivers discovered that when spark plugs went bad by forming an auxiliary gap outside of spark plugs could make these spark plugs work. The method was to tie a piece of wood to the spark plug, tie the wire to the wood and thus form a gap.

By Morris R. Machol7 min

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Glue

By Dr. George F. Lull5 min

498429

The Union Six Cylinder Airplane Engine

502503

Katherine Stinson Flies for Red Cross

Pilots Curtiss Machine from Buffalo to Washington in Remarkable Flight
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Chivalry of the Air

504505

Air Supremacy Discussed

June 151917 July 151917