You limited your search to:

  Partner: UNT Libraries Government Documents Department
 Decade: 1920-1929
 Serial/Series Title: NACA Technical Memorandums
 Collection: National Advisory Committee for Aeronautics Collection
Large German airship stations

Large German airship stations

Date: August 1, 1921
Creator: Sabatier, J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Tests of artificial flight at high altitudes

Tests of artificial flight at high altitudes

Date: November 1, 1920
Creator: Gradenwitz, Arthur
Description: If we wish to form an accurate idea of the extraordinary progress achieved in aeronautics, a comparison must be made of the latest altitude records and the figures regarded as highest attainable limit some ten years ago. It is desirable, for two reasons, that we should be able to define the limit of the altitudes that can be reached without artificial aid. First, to know to what extent the human body can endure the inhalation of rarified air. Second, the mental capacity of the aviator must be tested at high altitudes and the limit known below which he is able to make reliable observations without being artificially supplied with oxygen. A pneumatic chamber was used for the most accurate observations.
Contributing Partner: UNT Libraries Government Documents Department
Shape and strength of seaplane under-structures with special regard to seaworthiness

Shape and strength of seaplane under-structures with special regard to seaworthiness

Date: August 1, 1921
Creator: Lewe, Victor
Description: This report presents experiments and calculations for the purpose of determining the landing gear requirements upon the water. Moving pictures are given which furnish data and also may give both the magnitude and direction of the forces acting. Different classes of seaplanes are examined and proposals for calculation instructions are given.
Contributing Partner: UNT Libraries Government Documents Department
High efficiency of seaplanes

High efficiency of seaplanes

Date: August 1, 1921
Creator: Pegna, G
Description: A table is presented which includes data for calculating the index of efficiency. The author uses this data to conclude that seaplanes cannot be considered inferior to terrestrial airplanes.
Contributing Partner: UNT Libraries Government Documents Department
Preliminary calculation of cylinder dimensions for aircraft engines

Preliminary calculation of cylinder dimensions for aircraft engines

Date: September 1, 1921
Creator: Schwager, Otto
Description: It is extremely important in building aircraft engines to determine the requisite cylinder dimensions as accurately as possible, in order that the weight required for a given power shall not be excessive. This report presents a calculation method that depends on the air requirement of the fuel.
Contributing Partner: UNT Libraries Government Documents Department
Calculation of wing spars

Calculation of wing spars

Date: August 1, 1921
Creator: Muller-Breslau, H
Description: The author presents a comparison and combination of the numerical and geometrical determinations of the maximum M, when calculating the maximum bay moment.
Contributing Partner: UNT Libraries Government Documents Department
Glossary of terms used in flying boat hull construction

Glossary of terms used in flying boat hull construction

Date: September 1, 1921
Creator: Nicolson, David
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Calculation of wing spars

Calculation of wing spars

Date: August 1, 1921
Creator: Ratzersdorfer, Julius
Description: A simplified formula for calculating wing spars is presented.
Contributing Partner: UNT Libraries Government Documents Department
Abacus giving the variation of the mean pressure of an aviation engine as a function of its speed of rotation

Abacus giving the variation of the mean pressure of an aviation engine as a function of its speed of rotation

Date: March 1, 1921
Creator: Margoulis, W
Description: Comparing the results of the calculations for computing the mean pressure of an aviation engine for any number of revolutions, with those of experiment, the writer, by numerous examples, shows the perfect agreement between them. This report will show that, by means of a special abacus, an engineer can instantly plot the characteristics of an engine.
Contributing Partner: UNT Libraries Government Documents Department
On the elementary relation between pitch, slip, and propulsive efficiency

On the elementary relation between pitch, slip, and propulsive efficiency

Date: July 1, 1920
Creator: Froude, W
Description: The author examines the current theory on the importance of reducing slip in airplane propellers. The author feels an exaggerated importance is attached to this supposition and feels that the increase in friction by an increase in propeller area or number of revolutions can't be discounted.
Contributing Partner: UNT Libraries Government Documents Department
FIRST PREV 1 2 3 4 5 NEXT LAST