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  Partner: UNT Libraries Government Documents Department
 Decade: 1920-1929
 Serial/Series Title: NACA Technical Memorandums
 Collection: National Advisory Committee for Aeronautics Collection
Lift theory of supporting surfaces : second article

Lift theory of supporting surfaces : second article

Date: September 1, 1921
Creator: Von Mises, R
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The New Interpretation of the Laws of Air Resistance

The New Interpretation of the Laws of Air Resistance

Date: April 1, 1923
Creator: Prandtl, L
Description: A closer examination of Newton's formula for air resistance shows that it is well to consider the air as an ordinary fluid, and, indeed for most of the velocities considered, as a non-compressible fluid, so long as the dimensions of the moving body are large in comparison with the mean free path of the particles of air.
Contributing Partner: UNT Libraries Government Documents Department
Seaplanes for commerce

Seaplanes for commerce

Date: March 1, 1923
Creator: Warner, Edward P
Description: The advantages of using seaplanes for commercial purposes is discussed.
Contributing Partner: UNT Libraries Government Documents Department
Calculation of the pressures on aircraft engine bearings

Calculation of the pressures on aircraft engine bearings

Date: December 1, 1929
Creator: Steigenberger, O
Description: For aircraft engines the three principal operating conditions are idling speed, cruising speed, and diving with the engine stopped. In what follows, we will discuss a method which affords a good idea of the course of pressure for the above mentioned operating conditions. The pressures produced in the driving gear are of three kinds; namely, the pressure due to gases, the pressure due to the inertia of the rotating masses, and the pressure due to the inertia of the reciprocating masses.
Contributing Partner: UNT Libraries Government Documents Department
Turbulent flow

Turbulent flow

Date: October 1, 1927
Creator: Prandtl, L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Technical Section of Aeronautics

Technical Section of Aeronautics

Date: February 1, 1923
Creator: Lesage, Andre
Description: The duties of the Technical Section are listed along with facilities for testing. Different categories of tests are discussed and some sample results included.
Contributing Partner: UNT Libraries Government Documents Department
Spontaneous combustion of hydrogen

Spontaneous combustion of hydrogen

Date: December 1, 1923
Creator: Pothmann, PH & Nusselt, Wilhelm
Description: It is shown by the author's experiments that hydrogen which escapes to the atmosphere through openings in the system may burn spontaneously if it contains dust. Purely thermal reasoning can not account for the combustion. It seems to be rather an electrical ignition. In order to determine whether the cause of the spontaneous ignition was thermo-chemical, thermo-mechanical, or thermo-electrical, the experiments in this paper were performed.
Contributing Partner: UNT Libraries Government Documents Department
Tin soldering of aluminum and its alloys

Tin soldering of aluminum and its alloys

Date: October 1, 1921
Creator: Gallo, Gino
Description: A method is presented for soldering aluminum to other metals. The method adopted consists of a galvanic application to the surface of the light-metal parts to be soldered, of a layer of another metal, which, without reacting electrolytically on the aluminum, adheres strongly to the surface to which it is applied, and is, on the other hand, adapted to receive the soft solder. The metal found to meet the criteria best was iron.
Contributing Partner: UNT Libraries Government Documents Department
The protection of duralumin from corrosion

The protection of duralumin from corrosion

Date: March 1, 1927
Creator: Nelson, WM
Description: Different types of coatings to protect duralumin from corrosion are discussed. Plating, etching, brushing, coloring, painting and varnishing are all investigated.
Contributing Partner: UNT Libraries Government Documents Department
Building a full-size glider

Building a full-size glider

Date: September 1, 1927
Creator: Camm, F J
Description: The building and flying of a glider is possible for anyone who can use a few basic tools. This report presents some plans and techniques for building your own glider.
Contributing Partner: UNT Libraries Government Documents Department
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