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  Partner: UNT Libraries Government Documents Department
 Decade: 1950-1959
An accurate and rapid method for the design of supersonic nozzles

An accurate and rapid method for the design of supersonic nozzles

Date: February 1, 1955
Creator: Beckwith, Ivan E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Achievement of continuous wall curvature in design of two-dimensional symmetrical supersonic nozzles

Achievement of continuous wall curvature in design of two-dimensional symmetrical supersonic nozzles

Date: January 1, 1952
Creator: Evvard, J C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Acid-Mine-Drainage Problems: Anthracite Region of Pennsylvania

Acid-Mine-Drainage Problems: Anthracite Region of Pennsylvania

Date: 1951
Creator: Ash, S. H. (Simon Harry), b. 1889
Description: Report from the U.S. Bureau of Mines discussing the anthracite region of Pennsylvania and the efforts to prevent coal-mine drainage into nearby streams. According to the introduction, "The purpose of this report is not to develop a practicable or feasible method or process of treating acid mine water but rather to present available factual and deduced data that may be useful in showing pH range over which the treatment is to take place and the sludge products most likely to be handled" (p. 2).
Contributing Partner: UNT Libraries Government Documents Department
Acoustic analysis of ram-jet buzz

Acoustic analysis of ram-jet buzz

Date: November 1, 1955
Creator: Mirels, Harold
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Acoustic radiation from two-dimensional rectangular cutouts in aerodynamic surfaces

Acoustic radiation from two-dimensional rectangular cutouts in aerodynamic surfaces

Date: August 1, 1955
Creator: Krishnamurty, K
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Acoustic, thrust, and drag characteristics of several full-scale noise suppressors for turbojet engines

Acoustic, thrust, and drag characteristics of several full-scale noise suppressors for turbojet engines

Date: April 1, 1958
Creator: Ciepluch, Carl C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Acoustical treatment for the NACA 8- by 6-foot supersonic propulsion wind tunnel

Acoustical treatment for the NACA 8- by 6-foot supersonic propulsion wind tunnel

Date: June 1, 1955
Creator: Beranek, Leo L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Acoustics of a nonhomogeneous moving medium.

Acoustics of a nonhomogeneous moving medium.

Date: February 1, 1956
Creator: Blokhintsev, D I
Description: Theoretical basis of the acoustics of a moving nonhomogeneous medium is considered in this report. Experiments that illustrate or confirm some of the theoretical explanation or derivation of these acoustics are also included.
Contributing Partner: UNT Libraries Government Documents Department
An active particle diffusion theory of flame quenching for laminar flames / Dorothy M. Simon and Frank E. Belles

An active particle diffusion theory of flame quenching for laminar flames / Dorothy M. Simon and Frank E. Belles

Date: March 4, 1952
Creator: Simon, Dorothy M
Description: An equation for quenching distance based on the destruction of chain carriers by the surface is derived. The equation expresses the quenching distance in terms of the diffusion coefficients and partial pressures of the chain carriers and gas phase molecules, the efficiency of the surface as a chain breaker, the total pressure of the mixture, and a constant which depends on the geometry of the quenching surface. Quenching distances measured by flashback for propane-air flames are shown to be consistent with the mechanism. The derived equation is used with the lean inflammability limit and a rate constant calculated from burning velocity data to estimate quenching distances for propane-air (hydrocarbon lean) flames satisfactorily.
Contributing Partner: UNT Libraries Government Documents Department
Adaptation of a Cascade Impactor to Flight Measurement of Droplet Size in Clouds

Adaptation of a Cascade Impactor to Flight Measurement of Droplet Size in Clouds

Date: September 18, 1951
Creator: Levine, Joseph
Description: A cascade impactor, an instrument for obtaining: the size distribution of droplets borne in a low-velocity air stream, was adapted for flight cloud droplet-size studies. The air containing the droplets was slowed down from flight speed by a diffuser to the inlet-air velocity of the impactor. The droplets that enter the impactor impinge on four slides coated with magnesium oxide. Each slide catches a different size range. The relation between the size of droplet impressions and the droplet size was evaluated so that the droplet-size distributions may be found from these slides. The magnesium oxide coating provides a permanent record. of the droplet impression that is not affected by droplet evaporation after the. droplets have impinged.
Contributing Partner: UNT Libraries Government Documents Department