You limited your search to:

 Collection: Technical Report Archive and Image Library
Theory of automatic control of airplanes

Theory of automatic control of airplanes

Date: April 1, 1939
Creator: Weiss, Herbert K
Description: Methods of automatically controlling the airplane are reviewed. Equations for the controlled motion including inertia effects of the control are developed and methods of investigating the stability of the resulting fifth and higher order equations are presented. The equations for longitudinal and lateral motion with both ideal and non-ideal controls are developed in dimensionless form in terms of control parameters based on simple dynamic tests of the isolated control unit.
Contributing Partner: UNT Libraries Government Documents Department
Theory of Characteristics

Theory of Characteristics

Date: September 1, 1949
Creator: Tollmien, W.
Description: The theory of characteristics will be presented generally for quasilinear differential equations of the second order in two variables. This is necessary because of the manifold requirements to be demanded from the theory of characteristics.
Contributing Partner: UNT Libraries Government Documents Department
A theory of conductivity of cold-worked copper

A theory of conductivity of cold-worked copper

Date: September 1, 1951
Creator: Landauer, Rolf
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The theory of contra-vanes applied to the propeller

The theory of contra-vanes applied to the propeller

Date: September 1, 1939
Creator: Betz, Albert
Description: The optimum circulation distribution and hence the maximum theoretical thrust obtainable for contra-vanes fitted behind propellers is markedly dependent on the number of guide vanes. The outer portion of the vanes, even if projecting considerably beyond the edge of the propeller slipstream, still contribute appreciably to this theoretical gain of thrust. But, owing to the always existing friction of the vanes, the limit of the optimum vane length lies at relatively small diameters. A large hub unloads the vanes. Hence, the guide vanes are best attached to suitable parts of the bodies which would, in any case, be subjected to the slipstream.
Contributing Partner: UNT Libraries Government Documents Department
Theory of Determination of Ultra-Radio Frequencies by Standing Waves on Wires

Theory of Determination of Ultra-Radio Frequencies by Standing Waves on Wires

Date: June 23, 1924
Creator: Hund, August
Description: Scientific paper issued by the Bureau of Standards over ultra-radio frequencies. As stated in the abstract, "this paper furnishes the theoretical background for the method of frequency standardization employing short standing waves on parallel wires" (p. 487). This paper includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
The theory of diffusion in strained systems

The theory of diffusion in strained systems

Date: September 1, 1958
Creator: Girifalco, Louis A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Theory of dynamic creep

Theory of dynamic creep

Date: September 1, 1955
Creator: Predvoditelev, A A
Description: An analysis is given of the causes of the increase in the creep of a material under dynamic loads. A theory of dynamic creep is proposed based on the after-effect theory of Becker.
Contributing Partner: UNT Libraries Government Documents Department
Theory of flame propagation

Theory of flame propagation

Date: June 1, 1951
Creator: Zeldovich, Y B
Description: The mechanism of flame propagation has been qualitatively formulated. In accordance with this formulation, the chemical reaction initiated in some layer brings about an increase in the temperature; because of the heat conduction, the temperature is raised in the neighboring layer where in turn the chemical reaction is initiated. In this manner the flame is propagated.
Contributing Partner: UNT Libraries Government Documents Department
Theory of flapping flight

Theory of flapping flight

Date: October 1, 1925
Creator: Lippisch, Alexander
Description: Before attempting to construct a human-powered aircraft, the aviator will first try to post himself theoretically on the possible method of operating the flapping wings. This report will present a graphic and mathematical method, which renders it possible to determine the power required, so far as it can be done on the basis of the wing dimensions. We will first consider the form of the flight path through the air. The simplest form is probably the curve of ordinary wave motion. After finding the flight curve, we must next determine the change in the angle of attack while passing through the different phases of the wave.
Contributing Partner: UNT Libraries Government Documents Department
Theory of ground vibrations of a two-blade helicopter rotor on anisotropic flexible supports

Theory of ground vibrations of a two-blade helicopter rotor on anisotropic flexible supports

Date: January 1, 1947
Creator: Coleman, Robert P
Description: None
Contributing Partner: UNT Libraries Government Documents Department