June 1, 1920

June 1, 1920

View Full Issue Table of Contents

Bakelite Micarta Propellers

The Gliding Surface of Seaplane Floats

By Lieut. Col. A. Guidoni7 min

Navy Specifications for Two-Place Amphibian Planes

View Full Issue
More Features
354355

Bakelite Micarta Propellers

During the past few years there has been developed for various electrical uses and also for certain parts of automobiles a composition material called “Bakelite” after its inventor, Dr. Backeland. So successful has this material proven that experiments are now being made with airplane propellers built of it.
362363

The Gliding Surface of Seaplane Floats

Seaplane floats generally used are of two different kinds. In the first the gliding surface is completely distinct and separate from the float, being formed by a series of ribs placed laterally or under the float; in the second the gliding surface is an integral part of the float, being part of the whole of the bottom.

By Lieut. Col. A. Guidoni7 min

362363

Navy Specifications for Two-Place Amphibian Planes

The Bureaus of Construction and Repair and of Steam Engineering, Navy Department, have issued specifications for two-place airplanes capable of being used either as seaplanes or as land planes. Bids on this schedule are to be opened on June 1, 1920.
366367

The Longhead Sport Biplane

General Description. The Loughead sport-biplane is a single-place airplane designed to give a good machine at a minimum of expense. It embodies no radical departures from standard aircraft design, and has an excellent performance. Every thought has been taken to make the plane a “one man job,” and the result is that practically any small field or country road becomes an aerodrome to the owner of a Loughead sport biplane.
368369

Recent Data on Parachutes

During my experimental testing of parachutes and life packs, some unusual problems were encountered, one of the most interesting of which is friction static burns. At first it was thought to be acid burns, but all acid tests were tried, and none gave the same results.

By Floyd Smith5 min

352353

Editorials

THE rules and regulations for the airplane and seaplane competition the British Air Ministry will hold in the coming summer have just appeared. Certain technical requirements are of interest. In the prescribed number of instruments, it is particularly interesting to see that the turn indicator is included.
358359

New Glenn L. Martin Navy Torpedo Plane

The Glenn L. Martin Co. has just completed another new type of torpedo plane of the United States Navy. This plane was given its trial test on May 6, 1920, at McCook Field Dayton, Ohio. Both Army and Navy officials witnessed the trial test and consider the performance of the new torpedo plane an unusual success.
356357

Correcting the Longitudinal Balance of JN-6H Airplanes

The Engineering Division of the Air Service, McCook Field, recommends as follows for the correction of faulty longitudinal balance in JN-6H airplanes: Nose heaviness or tail heaviness should never be corrected by the addition of masses, such as boxes of sand or lead weights.
360361

Major Schroeder’s True Altitude 33,000 Ft.

The Bureau of Standards has just issued an official report on the altitude reached by Maj. R. W. Schroeder on Feb. 27, 1920, at McCook Field, Dayton, Ohio. Major Schroeder used for this flight a Lepere biplane with a Liberty Twelve engine equipped with a supercharger.
358359

Book Reviews

AIRPLANE CHARACTERISTICS. By Prof. Frederick Bedell. (D. Van Nostrand Co. 123 pp.) Written by a physicist and an experienced teacher, this work is an excellent contribution to the elementary study of aeronautics. Simple as the treatment is, it is correct.
MAY 151920 JUNE 151920