October 19, 1929

Aeronautical Engineering Section

Weight Control in the Design of Aircraft

Aeronautical Engineering Section

The Production of Lift By Propeller Blades

The Why of Steel Built Hangars

Aeronautical Engineering Section

Weight Control in the Design of Aircraft

THE FOLLOWING TABULATIONS represent a fairly complete compilation of weight information on the parts and materials which go into the construction of an aircraft. The weights of engines are not included as these weights may be found tabulated up to date in current issues of AVIATION.

Aeronautical Engineering Section

The Production of Lift By Propeller Blades

AN analysis of propeller model tests, undertaken by the author several years ago1 confirmed in general the established views about the action of propeller blades, but showed these principles to be unsatisfactory for the numerical computation of the thrust developed.


The Why of Steel Built Hangars

A NEW INDUSTRY APPEARS—a new industry needs buildings. What are its requirements? How should those buildings be built and of what? To begin with, every building material has some advantages—some more or less than others. The trick is to find the one material that incorporates as many of the advantages as possible of all the others, adds a few of its own, and has none of the disadvantages of any of the others.


What Our Readers Say

To THE EDITOR: You were kind enough to furnish me with a copy of a letter from Mr. M. S. Locke, of the Esline Company, who apparently does not entirely approve of my recently published article on the lumber built hangar. Since Mr. Locke is with a steel products company, his attitude is not unnatural.

National Distribution Through Factory Branches

IN THE OPINION of the officials of the American Eagle Aircraft Corporation, Kansas City, Mo., there is no such thing in the aeronautic industry as an airplane distributor. At first glance, such a statement might cause certain gentry of the aeronautic industry, who quite justly regard themselves as airplane distributors, to rise to the occasion and remark in no uncertain terms that some one is traveling under a most appalling misapprehension.


Private Pilots and Their Problems

OF ALL the uncertain fields in an uncertain industry, that of the private and plane owner is the most in doubt. We can see maps showing airlines, air mail and passenger lines and we can get figures on the amount of traffic, but try to find out how many private owners there are who fly purely for pleasure and there will be another story, or rather lack of story.


Airwheels for Airplanes

Performance of the Large Capacity, Low Pressure Tires, Recently Developed for Airplane Use

Aeronautical Engineering Section

Integration of the Theoretical Expression for Drag

A GREAT deal of material has been written on the subject of aerodynamics, but very little has been written explaining the mathematics involved. In this article, I hope to bring before the reader the explanation of the process of integrating a certain expression which occurs in the development of the expression for the theoretical drag of an airfoil.


Looking for Safer Aircraft

The Guggenheim Safety Competition Draws Near to Its Close

Heat Treatment of Alloy Steels in Airplane Work

Methods and Equipment Employed in the Recently Completed Fairchild Factory at Farmingdale, L. I.

October 121929 October 261929