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 Collection: Technical Report Archive and Image Library
A theory for predicting the flow of real gases in shock tubes with experimental verification

A theory for predicting the flow of real gases in shock tubes with experimental verification

Date: March 1, 1955
Creator: Trimpi, Robert L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A theory for primary failure of straight centrally loaded columns

A theory for primary failure of straight centrally loaded columns

Date: January 1, 1938
Creator: Lundquist, Eugene E
Description: A theory of primary failure of straight centrally loaded columns is presented. It is assumed that the column cross section and the load are constant throughout the length.
Contributing Partner: UNT Libraries Government Documents Department
A theory for stability and buzz pulsation amplitude in ram jets and an experimental investigation including scale effects

A theory for stability and buzz pulsation amplitude in ram jets and an experimental investigation including scale effects

Date: January 1, 1956
Creator: Trimpi, Robert L
Description: From a theory developed on a quasi-one-dimensional-flow basis, it is found that the stability of the ram jet is dependent upon the instantaneous values of mass flow and total pressure recovery of the supersonic diffuser and immediate neighboring subsonic diffuser. Conditions for stable and unstable flow are presented. The theory developed in the report is in agreement with the experimental data of NACA-TN-3506 and NACA-RM-L50K30. A simple theory for predicting the approximate amplitude of small pressure pulsation in terms of mass-flow decrement from minimum-stable mass flow is developed and found to agree with experiments. Cold-flow tests at a Mach number of 1.94 of ram-jet models having scale factors of 3.15:1 and Reynolds number ratios of 4.75:1 with several supersonic diffuser configurations showed only small variations in performance between geometrically similar models. The predominant variation in steady-flow performance resulted from the larger boundary layer in the combustion chamber of the low Reynolds number models. The conditions at which buzz originated were nearly the same for the same supersonic diffuser (cowling-position angle) configurations in both large and small diameter models. There was no appreciable variation in stability limits of any of the models when the combustion-chamber length was increased by a factor ...
Contributing Partner: UNT Libraries Government Documents Department
A theory for stability and buzz pulsation amplitude in ram jets and an experimental investigation including scale effects

A theory for stability and buzz pulsation amplitude in ram jets and an experimental investigation including scale effects

Date: October 15, 1953
Creator: Trimpi, Robert L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A theory for the elastic deflections of plates integrally stiffened on one side

A theory for the elastic deflections of plates integrally stiffened on one side

Date: April 1, 1956
Creator: Crawford, Robert F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A theory for the lateral response of airplanes to random atmospheric turbulence

A theory for the lateral response of airplanes to random atmospheric turbulence

Date: May 1, 1957
Creator: Eggleston, John M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The Theory of a Free Jet of a Compressible Gas

The Theory of a Free Jet of a Compressible Gas

Date: March 1, 1944
Creator: Abramovich, G. N.
Description: In the present report the theory of free turbulence propagation and the boundary layer theory are developed for a plane-parallel free stream of a compressible fluid. In constructing the theory use was made of the turbulence hypothesis by Taylor (transport of vorticity) which gives best agreement with test results for problems involving heat transfer in free jets.
Contributing Partner: UNT Libraries Government Documents Department
Theory of aircraft structural models subject to aerodynamic heating and external loads

Theory of aircraft structural models subject to aerodynamic heating and external loads

Date: September 1, 1957
Creator: O'Sullivan, William J , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Theory of an airplane encountering gusts II

Theory of an airplane encountering gusts II

Date: January 1, 1918
Creator: Wilson, Edwin Bidwell
Description: Calculations of aerodynamic effects of an airplane encountering gusts are presented.
Contributing Partner: UNT Libraries Government Documents Department
Theory of an Airplane Encountering Gusts III

Theory of an Airplane Encountering Gusts III

Date: January 1, 1918
Creator: Wilson, Edwin Bidwell
Description: Report presents a new method for solving linear equations developed by Bromwich, which is suited to determine the motion for any particular gust, when the machine started from equilibrium, without the trouble of determining the constants of integration in the complementary function. (author).
Contributing Partner: UNT Libraries Government Documents Department