In Partnership With

April 15, 1919

Course in Aerodynamics and Airplane Design

The Caproni E-3 Night Bomber

Trend of German Airplane Design

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Course in Aerodynamics and Airplane Design

Discussion of Theoretical Principles.—The testing of control surfaces is an easy matter from the point of view of the physical testing, but it is an extremely difficult one from the point of view of determining what loads the surfaces should actually be capable of withstanding.

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The Caproni E-3 Night Bomber

The Caproni E-3 night bomber is a three-engine biplane of considerable originality, which was developed during the war in Italy with the view to having a heavy load-carrying airplane in which the splitting of the power plant into three independent engine units would insure great reliability of operation.
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Trend of German Airplane Design

Enemy airplanes which have been captured intact or reconstructed have, under test, generally shown themselves poor in performance, judged by British standards, especially in point of speed at heights; but it would seem that as a rule they are fairly good in point of climb, and notably good in regard to maneuverability.
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The Direct-Lift Machine

Much of the scepticism and ridicule with which any mention of the helicopter is too often treated is undoubtedly due to the lack of knowledge existing with regard to what has been accomplished by experiment with full-sized vertical lift machines, the results in many cases proving that it is not only a theoretic, but a practical certainty.

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Significance of Oxygen in Balloon Gas

In the rapid progress of lighter-than-air craft, which is widely prophesied for the near future, the development of fabrics for the envelope which are more nearly impervious to gas, should play a prominent part. A perfectly gas-tight fabric has not yet been realized in practice.

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News of the Fortnight

A new program for the development of the Air Service on a permanent basis has been announced by the War Department. This plan provides for 5,100 planes of all types, 1,700 in active commission and 3,400 in reserve. This is based upon the proposed military establishment of 500,000 men, in which total the Air Service personnel will be 1,923 officers and 21,853 men.
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Performance and Cost of the Air Mail Service

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The Bellanca C. E. Biplane

The Bellanca C. E. two-seater biplane, with a 55 hp. Anzani engine, has been designed to meet the requirements of quick get-away, fast climb, and very high speed, and—at the same time—a very low landing speed, such as insures the greatest degree of safety.
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Editorials

Editorials

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Flexible Tubing

April 11919 May 11919