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  Partner: UNT Libraries Government Documents Department
 Resource Type: Report
 Decade: 1950-1959
Variation of pressure limits of flame propagation with tube diameter for various isooctane-oxygen-nitrogen mixtures

Variation of pressure limits of flame propagation with tube diameter for various isooctane-oxygen-nitrogen mixtures

Date: March 3, 1952
Creator: Spakowski, Adolph, A & Belles, Frank E
Description: An investigation was made of the change in the pressure limits of flame propagation with tube diameter for various isooctane-oxygen-nitrogen mixtures. Pressure limits were measured in cylindrical glass tubes of four different inside diameters at six different oxygen-nitrogen ratios. Under the experimental conditions, flame propagation was found to be impossible in isooctane-oxygen mixtures with oxygen concentrations less than 11 to 12 percent. Critical tube diameters for flame propagation were calculated and the effect of pressure was determined and compared with the effect of pressure on quenching distance. Critical diameters were related to flame speeds for various isooctane-oxygen-nitrogen mixtures.
Contributing Partner: UNT Libraries Government Documents Department
Variation of spontaneous ignition delays with temperature and composition for propane-oxygen-nitrogen mixtures at atmospheric pressure

Variation of spontaneous ignition delays with temperature and composition for propane-oxygen-nitrogen mixtures at atmospheric pressure

Date: May 4, 1954
Creator: Brokaw, Richard S & Jackson, Joseph L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Variation of the pressure limits of flame propagation with tube diameter for propane-air mixtures

Variation of the pressure limits of flame propagation with tube diameter for propane-air mixtures

Date: December 5, 1951
Creator: Belles, Frank E & Simon, Dorothy M
Description: An investigation was made of the variation of the pressure limits of flame propagation with tube diameter for quiescent propane with tube diameter for quiescent propane-air mixtures. Pressure limits were measured in glass tubes of six different inside diameters, with a precise apparatus. Critical diameters for flame propagation were calculated and the effect of pressure was determined. The critical diameters depended on the pressure to the -0.97 power for stoichiometric mixtures. The pressure dependence decreased with decreasing propane concentration. Critical diameters were related to quenching distance, flame speeds, and minimum ignition energy.
Contributing Partner: UNT Libraries Government Documents Department
Variation with temperature of surface tension of lubricating oils

Variation with temperature of surface tension of lubricating oils

Date: February 1, 1950
Creator: Ross, Sydney
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The variation with wing aspect ratio of flap effectiveness on thin rectangular wings at transonic speeds

The variation with wing aspect ratio of flap effectiveness on thin rectangular wings at transonic speeds

Date: August 23, 1956
Creator: Lowry, John G & Taylor, Robert T
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A variational theorem for creep with applications to plates and columns

A variational theorem for creep with applications to plates and columns

Date: January 1, 1958
Creator: Sanders, J Lyell, Jr; Mccomb, Harvey G , Jr & Schlechte, Floyd R
Description: A variational theorem is presented for a body undergoing creep. Solutions to problems of the creep behavior of plates, columns, beams, and shells can be obtained by means of the direct methods of the calculus of variations in conjunction with the stated theorem. The application of the theorem is illustrated for plates and columns by the solution of two sample problems.
Contributing Partner: UNT Libraries Government Documents Department
A variational theorem for creep with applications to plates and columns

A variational theorem for creep with applications to plates and columns

Date: May 1, 1957
Creator: Sanders, J Lyell, Jr; Mccomb, Harvey, Jr & Schlechte, Floyd R
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A vector study of linearized supersonic flow applications to nonplanar problems

A vector study of linearized supersonic flow applications to nonplanar problems

Date: January 1, 1953
Creator: Martin, John C
Description: A vector study of the partial-differential equation of steady linearized supersonic flow is presented. General expressions which relate the velocity potential in the stream to the conditions on the disturbing surfaces, are derived. In connection with these general expressions the concept of the finite part of an integral is discussed. A discussion of problems dealing with planar bodies is given and the conditions for the solution to be unique are investigated. Problems concerning nonplanar systems are investigated, and methods are derived for the solution of some simple nonplanar bodies. The surface pressure distribution and the damping in roll are found for rolling tails consisting of four, six, and eight rectangular fins for the Mach number range where the region of interference between adjacent fins does not affect the fin tips.
Contributing Partner: UNT Libraries Government Documents Department
A vector study of linearized supersonic flow applications to nonplanar problems

A vector study of linearized supersonic flow applications to nonplanar problems

Date: June 1, 1952
Creator: Martin, John C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Velocity and friction characteristics of laminar viscous boundary-layer and channel flow over surfaces with ejection or suction

Velocity and friction characteristics of laminar viscous boundary-layer and channel flow over surfaces with ejection or suction

Date: December 1, 1957
Creator: Eckert, E R G; Donoughe, Patrick L & Moore, Betty JO
Description: None
Contributing Partner: UNT Libraries Government Documents Department