In Partnership With

June 15, 1918

The Friedrichshafen Bombing Biplane

News of the Fortnight

Importance of Numbers in Aerial Warfare

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The Friedrichshafen Bombing Biplane

Forward Cockpit—This is attached to the main body by four bolts with clips similar to those earlier described. It consists of a light wooden framework, covered throughout by three-ply. This cockpit can be divided off from the main cockpit by means of a fabric curtain.
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News of the Fortnight

In view of the misunderstanding regarding the advertising of aeronautical materials and supplies that many manufacturers have labored under, the opinion printed below from John D. Ryan, director of aircraft production, is of special interest.
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Importance of Numbers in Aerial Warfare

The English pioneer in the science ot aeronautics, F. W. Lanchester, has several chapters in his book, " Aircraft in Warfare," which merit far more attention than they have yet received. The book teems with predictions written during the period immediately following the outbreak ut hostilities, September to December, 1914, which by now have been borne out in a most complete and astonishing fashion.

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The Model M.T.2 Lawson Biplane

Consideration was given in this machine mainly to obtain sturdiness, maneuvering ability and vision. It can also be used for primary gun work, since the rear seat is so situated as to allow mounting of guns on the rear pit rim and on top of the cabane.
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The 240 hp., 8-cylinder Mercédès Engine

The following detailed report on the design of the 8-cylinder Mercédès engine, which has been issued by the British Air Ministry, is based on an investigation of the engine (No. 23,003) taken from the German two-seater Albatros Biplane (G. 37) which was brought down by anti-aircraft guns near Armentières on May 12, 1917.
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The C.V Model L.V.G. Biplane

The model C.V L.V.G biplane belongs, as its serial letter indicates, to the all-purpose class of airplanes. The model here reviewed was built by the Luft-Verkehrs Gesellschaft. The principal characteristics of the model C.V L.V.G. biplane and of the preceding types of this make as well as of the model C.IV Rumpler biplanef may be gathered from the following comparative tables:

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The Spad Two-Seater Fighter

The following particulars and illustrations, apparently from an official German report on the Spad two-seater, are published in Flugsport of April 10 and reproduced here from Flight: The Spad two-seater, which is herewith described, is marked B 6006, and is built under license in July, 1917, by the Aircloser together than those of the lower wing, and the interplane struts converge somewhat upwards.
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Digest of the Foreign Aeronautical Press

The Austrian Berg Pursuit Biplane—Simplicity appears to be the keynote of design in the Austrian Berg pursuit biplane, both as regards aero-dynamic and structural design. The machine has every appearance of being designed chiefly with a view to rapidity of production, but this has been attained by a studied simplicity of detail rather than by any scamping in workmanship.
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Evolution of the Airplane Engine

The War Department authorizes the following statement on the evolution of the airplane engine whieh has been prepared by the National Advisory Committee for Aeronautics : The first man-carrying airplane flights were made in December, 1903, with the Wright Brothers’ engine developing 12 hp. and weighing 152 lb., or 12.7 lb.
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Machine Guns for American Aircraft

The Browning machine gun has successfully undergone a test to determine its value for use with aircraft. This is one of three types of machine guns with which the rate of fire can be so synchronized with the revolutions of the propeller of a tractor airplane that the gun can be fired by the pilot of a combat plane through the revolving blades.
June 11918 July 11918