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Thrust augmentation of a turbojet engine by the introduction of liquid ammonia into the compressor inlet

Description: Report presenting an experimental investigation to determine the thrust augmentation possible by the injection of liquid ammonia into the compressor inlet of an axial-flow-type turbojet engine. Results regarding the selection of coolant, cooling with liquid ammonia, engine performance, and operating experience are provided.
Date: August 13, 1952
Creator: Harp, James L., Jr.; Useller, James W. & Auble, Carmon M.
Partner: UNT Libraries Government Documents Department

Experimental performance of liquid fluorine-liquid ammonia propellant combination in 1000-pound-thrust rocket engines

Description: "The performance of liquid fluorine and liquid ammonia as a propellant combination was evaluated in 1000-pound-thrust rocket engines operated at a chamber pressure of 600 pounds per square inch absolute. Values of specific impulse, characteristic velocity, thrust coefficient, and heat rejection were obtained as functions of propellant mixture ratio for each of four injectors: a triplet, a showerhead, and two like-on-like types" (p. 1).
Date: May 13, 1954
Creator: Douglass, Howard W.
Partner: UNT Libraries Government Documents Department

Ammonia Emission Projections for DWPF Recycle During Macrobatch 3 Campaign

Description: The expected concentration of ammonia in the DWPF liquid recycle during the Macrobatch 3 campaign was estimated using the CPES model. The generation of hydrogen and ammonia during the SRAT/SME cycles was modeled using the same chemistry bases that have been used in all previous CPES model runs made since 1993. In this study, however, the current model basis for calculating the total ammonia production during a coupled operation was reformulated into a more useful form equally applicable to a sludge-only operation as well.
Date: February 4, 2002
Creator: Choi, A.S.
Partner: UNT Libraries Government Documents Department

Regulation of Fertilizers: Ammonium Nitrate and Anhydrous Ammonia

Description: This report focuses on some of the federal regulatory programs overseeing storage of ammonium nitrate and anhydrous ammonia by retailers. It discusses federal occupational safety, environmental, and security statutes and regulations applicable to each chemical. Select policy issues regarding these federal regulatory programs will be highlighted.
Date: May 14, 2013
Creator: Shea, Dana A.; Schierow, Linda-Jo & Szymendera, Scott D.
Partner: UNT Libraries Government Documents Department

Regulation of Fertilizers: Ammonium Nitrate and Anhydrous Ammonia

Description: This report focuses on some of the federal regulatory programs overseeing storage of ammonium nitrate and anhydrous ammonia by retailers. It discusses federal occupational safety, environmental, and security statutes and regulations applicable to each chemical. Select policy issues regarding these federal regulatory programs will be highlighted.
Date: May 9, 2013
Creator: Shea, Dana A.; Schierow, Linda-Jo & Szymendera, Scott D.
Partner: UNT Libraries Government Documents Department

The Determination of T at the Dropping Mercury Electrode in Hex Plant Ammonia and Peroxide Decantrates

Description: Inroduction: "A study of the literature, particularly the work done by R. Strubl, I.W. Kolthoff and S.B. Smith, indicated that a polargraphic method for the estimation of T could be devised which would not sacrifice reasonable accuracy for rapidity. Work was begun with the intention of developing such a method."
Date: January 16, 1945
Creator: Kwiatkowski, S.; Owens, J. & Castro, C. C.
Partner: UNT Libraries Government Documents Department

Theoretical performance of liquid ammonia and liquid fluorine as a rocket propellant

Description: From Summary: "Theoretical values of performance parameters for liquid ammonia and liquid fluorine as a rocket propellant were calculated on the assumption of equilibrium composition during the expansion process for a wide range of fuel-oxidant and expansion ratios. The parameters included were specific impulse, combustion-chamber temperature, nozzle-exit temperature, equilibrium composition, mean molecular weight, characteristic velocity, coefficient of thrust, ratio of nozzle-exit area to throat area, specific heat at constant pressure, coefficient of viscosity, and coefficient of thermal conductivity."
Date: July 3, 1953
Creator: Gordon, Sanford & Huff, Vearl N.
Partner: UNT Libraries Government Documents Department

Theoretical performance of liquid hydrazine and liquid fluorine as a rocket propellant

Description: From Summary: "Theoretical values of performance parameters for liquid ammonia and liquid fluorine as a rocket propellant were calculated on the assumption of equilibrium composition during the expansion process for a wide range of fuel-oxidant and expansion ratios. The parameters included were specific impulse, combustion-chamber temperature, nozzle-exit temperature, equilibrium composition, mean molecular weight, characteristic velocity, coefficient of thrust, ratio of nozzle-exit area to throat area, specific heat at constant pressure, coefficient of viscosity, and coefficient of thermal conductivity."
Date: July 3, 1953
Creator: Gordon, Sanford & Huff, Vearl N.
Partner: UNT Libraries Government Documents Department

Theoretical performance of mixtures of liquid ammonia and hydrazine as fuel with liquid fluorine as oxidant for rocket engines

Description: Report presenting theoretical values of rocket performance parameters for two mixtures of liquid ammonia and hydrazine with flourine as oxidant for a variety of parameters. Parameters included are specific impulse, combustion chamber temperature, nozzle-exit temperature, equilibrium composition, mean molecular weight, characteristic velocity, coefficient of thrust, ratio of nozzle-exit area to throat area, specific heat at constant pressure, coefficient of viscosity, and coefficient of thermal conductivity.
Date: July 29, 1953
Creator: Gordon, Sanford & Huff, Vearl N.
Partner: UNT Libraries Government Documents Department

Investigation of liquid fluorine and hydrazine-ammonia mixture in 100-pound-thrust rocket engine

Description: Report presenting the specific impulse, characteristic velocity, thrust coefficient, and heat rejection of liquid fluorine and a fuel consisting of a hydrazine-ammonia mixture for a range of fuel percentages in a 100-pound-thrust rocket engine designed for a combustion-chamber pressure of 300 pounds per square inch absolute. The fuel consisted of 59 percent hydrazine, 37 percent ammonia, and 4 percent water. The attainment of maximum performance with liquid fluorine as a rocket oxidant will require a critical study of injector design.
Date: October 29, 1952
Creator: Ordin, Paul M.; Rothenberg, Edward A. & Rowe, William H.
Partner: UNT Libraries Government Documents Department

Correlation of isothermal contours formed by penetration of jet of liquid ammonia directed normal to an airstream

Description: Report presenting an investigation to correlate the isothermal contour lines formed downstream of a single jet of liquid ammonia directed normal to an air stream. Criteria are presented to facilitate the design of jet-engine thrust-augmentation systems utilizing the injection of liquid ammonia to cool the air at the compressor inlet.
Date: February 3, 1954
Creator: Fenn, David B.
Partner: UNT Libraries Government Documents Department

Ammonia at Blodgett Forest, Sierra Nevada, USA

Description: Ammonia is a reactive trace gas that is emitted in large quantities by animal agriculture and other sources in California, which subsequently forms aerosol particulate matter, potentially affecting visibility, climate, and human health. We performed initial measurements of NH{sub 3} at the Blodgett Forest Research Station (BFRS) during a two week study in June, 2006. The site is used for ongoing air quality research and is a relatively low-background site in the foothills of the Sierra Nevada. Measured NH{sub 3} mixing ratios were quite low (< 1 to {approx} 2 ppb), contrasting with typical conditions in many parts of the Central Valley. Eddy covariance measurements showed NH{sub 3} fluxes that scaled with measured NH{sub 3} mixing ratio and calculated aerodynamic deposition velocity, suggesting dry deposition is a significant loss mechanism for atmospheric NH{sub 3} at BFRS. A simple model of NH{sub 3} transport to the site supports the hypothesis that NH{sub 3} is transported from the Valley to BFRS, but deposits on vegetation during the summer. Further work is necessary to determine whether the results obtained in this study can be generalized to other seasons.
Date: November 6, 2007
Creator: Fischer, Marc L. & Littlejohn, David
Partner: UNT Libraries Government Documents Department