January 1, 1918

Seaplane Float Construction

International Aircraft Standards

Digest of the Foreign Aeronautical Press


Seaplane Float Construction

In the March 15, 1917, issue of AVIATION AND AERONAUTICAL ENGINEERING, an article by the writer dealt with the various forms of seaplane floats and their duties. To supplement this the following article will describe the construction of these floats, without going into the details too deeply, for the reason that each designer and builder has his own ideas as to how the minor points should be constructed.


International Aircraft Standards

Region—1. All Douglas fir timber used in the production of this material shall have grown in the north Pacific coast timber region of western Oregon and Washington and near-by regions of British Columbia. Timber—2. The trees used in the production of this lumber shall be preferably of the “young yellow fir ” type and shall be in a healthy condition at the time of felling. Brashy lumber characteristic of old.

Digest of the Foreign Aeronautical Press

Supremacy of the Air.—Mr. Bonar Law, speaking on war achievements at the Free Trade Hall, Manchester, on Nov. 7, gave the following facts about the work of the Air Service: “In airplanes we had made immense advances. The number of airplane engines turned out last month .was exactly three times more than in October last year.

National Advisory Committee’s Annual Report

Following is an extract from the annual report of the executive committee of the National Advisory Committee for Aeronautics covering its activities during the fiscal year 1916-1917: General Recommendations In the latter part of March, 1917, when war with Germany seemed imminent, the committee, in conference with United States military and naval officers and manufacturers of aircraft, reviewed the condition of the aeronautical industry, the facilities then existing in this country for meeting the requirements of the Government, the possibilities of adequate expansion, and the then patent situation and its influence on the aeronautical industry.

Annual Report of the Chief Signal Officer

The work of the Signal Corps has included the development of the Army’s air program, the installation, operation, and maintenance of military telegraph and telephone systems, and radio ship and shore stations, the installation and maintenance of annunciator-buzzer and other target-range communication systems, the supply of the signal-unit accountability equipment to the several components of the Army, and the supply of material for the maintenance of fire-control systems and radio and signal stations for coast defenses.

News of the Fortnight

Unification of the British Air Services The unification of the British air services under a single head responsible to Parliament, which has been a long-standing topic in the English press, is now an established fact. The Air Force Act, 1917, the bill for which was introduced in the House of Commons on Nov. 8 by the Government and passed by both houses in the latter part of November, provides for the establishment of an Air Force, equal in status with and independent of the Navy and the Army, in which the present Royal Naval Air Service and the Royal Flying Corps will be absorbed.

Aircraft Bombs

The missiles which were dropped from aircraft in the early part of the Great War were, for the greater part, bombs and grenades of obsolete types which had been formerly employed in field warfare. Their action was rather uncertain and their manipulation was often fraught with considerable danger.


Computation of Airplane Climb

The altitude, at any time, of an airplane climbing at its maximum possible rate, is very nearly represented by a mathematical law similar to that for the rise of electric current in an inductive circuit. Thus if h be the altitude at a time, t and E the “ ceiling ” of the machine, we have the relation

The Lanzius Speed Scout


Book Reviews

“How TO FLY,” by Captain D. Gordon E. Re Vley. Paul Elder & Co., San Francisco, $1,100 pp. This attractive little book of pocket size, intended for the guidance of the prospective aviator, is written in clear and concise language by a practical pilot.
December 151917 January 151918