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  Partner: UNT Libraries Government Documents Department
 Collection: Technical Report Archive and Image Library
Investigations of Compression Shocks and Boundary Layers in Gases Moving at High Speed

Investigations of Compression Shocks and Boundary Layers in Gases Moving at High Speed

Date: January 1, 1947
Creator: Ackeret, J.; Feldmann, F. & Rott, N.
Description: The mutual influences of compression shocks and friction boundary layers were investigated by means of high speed wind tunnels.Schlieren optics provided a clear picture of the flow phenomena and were used for determining the location of the compression shocks, measurement of shock angles, and also for Mach angles. Pressure measurement and humidity measurements were also taken into consideration.Results along with a mathematical model are described.
Contributing Partner: UNT Libraries Government Documents Department
Experiments with an airfoil from which the boundary layer is removed by suction

Experiments with an airfoil from which the boundary layer is removed by suction

Date: August 1, 1926
Creator: Ackeret, J; Betz, A & Schrenk, O
Description: Our attempts to improve the properties of airfoils by removing the boundary layer by suction, go back to 1922. The object of the suction is chiefly to prevent the detachment of the boundary layer from the surface of the airfoil. At large angles of attack, such detachment prevents the attainment of the great lift promised by the theory, besides greatly increasing the drag, especially of thick airfoils. This report gives results of those experiments.
Contributing Partner: UNT Libraries Government Documents Department
Investigations on wings with and without sweepback at high subsonic speeds

Investigations on wings with and without sweepback at high subsonic speeds

Date: November 1, 1951
Creator: Ackeret, Jakob; Rott, Nikolaus & Degen, Max
Description: Drag tests at zero lift have been made at Mach numbers from 0.7 to approximately 0.95 in the high speed wind tunnel of the Institute of Aerodynamics, ETH, Zurich, on a group of untapered wings of aspect ratio 3.25, having sweep angles of 0 degree and 35 degrees. For each sweep angle, a series of geometrically similar models was tested at a constant Reynolds number to provide a verification of computed tunnel blocking corrections. Tests were also made for wings having thickness ratios of 0.09 and 0.12 and the results compared with results predicted by von Karman's similarity law.
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: April-June 1983

Advanced Fuel Cell Development Progress Report: April-June 1983

Date: February 1984
Creator: Ackerman, J. P. & Pierce, Robert Dean
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes efforts on development of molten carbonate fuel cells directed toward seeking alternative cathode materials to NiO. Based on an investigation of the thermodynamically stable phases formed under cathode conditions with a number of transition metal oxides, synthesis of prospective alternative cathode materials and doping of these materials to promote electronic conductivity is under way.
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: January-March 1978

Advanced Fuel Cell Development Progress Report: January-March 1978

Date: 1977?
Creator: Ackerman, J. P.; Ackerman, J. P.; Pierce, Robert Dean; Nelson, P. A.; Arons, R. M.; Kinoshita, K. et al.
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes the development of electrolyte structures which have good electrolyte retention and mechanical properties as well as long term stability, and on developing methods of synthesis amenable to mass production.
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: October-December 1977

Advanced Fuel Cell Development Progress Report: October-December 1977

Date: March 1978
Creator: Ackerman, J. P.; Kinoshita, K.; Finn, P. A.; Sim, J. W. & Nelson, P. A.
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes work aimed at understanding and improving the performance of fuel cells having molten alkali-carbonate mixtures as electrolytes; the fuel cells operate at temperatures near 925 K.
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: April-June 1977

Advanced Fuel Cell Development Progress Report: April-June 1977

Date: August 1977
Creator: Ackerman, J. P.; Pierce, R. D.; Nelson, P. A. & Arons, R. M.
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes activities directed toward understanding and improvement of molten-carbonate-electrolyte fuel cells operating at temperatures near 923 Kelvin.
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: July-September 1977

Advanced Fuel Cell Development Progress Report: July-September 1977

Date: November 1977
Creator: Ackerman, J. P.; Pierce, R. D.; Nelson, P. A.; Arons, R. M.; Kinoshita, K.; Sim, J. W. et al.
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL).
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: July-September 1983

Advanced Fuel Cell Development Progress Report: July-September 1983

Date: June 1984
Creator: Ackerman, J. P.; Pierce, Robert Dean; Nelson, P. A. & Arons, R. M.
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes activities seeking alternative cathode materials to NiO for molten carbonate fuel cells.
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: July-September 1984

Advanced Fuel Cell Development Progress Report: July-September 1984

Date: June 1985
Creator: Ackerman, J. P.; Pierce, Robert Dean; Nelson, P. A. & Arons, R. M.
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes studies directed toward seeking alternative cathode materials to NiO for molten carbonate fuel cells.
Contributing Partner: UNT Libraries Government Documents Department