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 Collection: Technical Report Archive and Image Library
Spreading of exhaust jet from 16 inch ream jet at Mach number 2.0 / Fred Wilcox, Donald Pennington

Spreading of exhaust jet from 16 inch ream jet at Mach number 2.0 / Fred Wilcox, Donald Pennington

Date: August 14, 1952
Creator: Wilcox, Fred & Pennington, Donald
Description: An investigation of the jet-spreading characteristics of a 16 inch ram-jet engine was conducted in the 8 by 6 foot supersonic tunnel at a Mach number of 2.0; both a converging nozzle having a contraction ratio of 0.71 and a cylindrical extension to the combustion chamber were used. The jet boundaries determined by means of pitot pressure surveys were compared with boundaries calculated from one-dimensional continuity and momentum relations. For the cylindrical nozzle, the jet reaches its maximum diameter, 4 percent greater than calculated, about 0.6 nozzle-exit diameter downstream of the nozzle exit. The maximum diameter for the converging nozzle was 7 percent greater than calculated from one dimensional relations and occurred from 1 to 1.5 nozzle-exit diameters downstream of the exit. Non dimensional maximum jet diameters agreed closely with results of an investigation by Rousso and Baughman; these data were obtained with low-temperature jets exhausting into a stream at a Mach number of 1.91 from nozzles having exit diameters of 0.75 inch.
Contributing Partner: UNT Libraries Government Documents Department
Square plate with clamped edges under normal pressure producing large deflections

Square plate with clamped edges under normal pressure producing large deflections

Date: January 1, 1942
Creator: Levy, Samuel
Description: A theoretical analysis is given for the stresses and deflections of a square plate with clamped edges under normal pressure producing large deflections. Values of the bending stress and membrane stress at the center of the plate and at the midpoint of the edge are given for center deflections up to 1.9 times the plate thickness. The shape of the deflected surface is given for low pressures and for the highest pressure considered. Convergence of the solution is considered and it is estimated that the possible error is less than 2 percent. The results are compared with the only previous approximate analysis known to the author and agree within 5 percent. They are also shown to compare favorably with the known exact solutions for the long rectangular plate and the circular plate.
Contributing Partner: UNT Libraries Government Documents Department
Square plate with clamped edges under normal pressure producing large deflections

Square plate with clamped edges under normal pressure producing large deflections

Date: January 1, 1942
Creator: Levy, Samuel
Description: A theoretical analysis is given for the stresses and deflections of a square plate with clamped edges under normal pressure producing large deflections. Values of the bending stress and membrane stress at the center of the plate and at the midpoint of the edge are given for center deflections up to 1.9 times the plate thickness. The shape of the deflected surface is given for low pressures and for the highest pressure considered. Convergence of solution is considered and it is estimated that the possible error is less than 2 percent. The results are compared with the only previous approximate analysis known to the author and agrees within 5 percent. They are also shown to compare favorably with the known exact solutions for the long rectangular plate and the circular plate.
Contributing Partner: UNT Libraries Government Documents Department
St. Petersburg: Biological Resources

St. Petersburg: Biological Resources

Date: 1983
Creator: U.S. Fish and Wildlife Service
Description: Map showing biological resources (birds, habitats, reefs, fishes, etc.) in the St. Petersburg region of the Florida coastline. Scale 1:100,000.
Contributing Partner: UNT Libraries Government Documents Department
St. Petersburg: Biological Resources

St. Petersburg: Biological Resources

Date: 1984
Creator: U.S. Fish and Wildlife Service
Description: Map showing biological resources (birds, oysters, fishes, grasses, etc.) in the St. Petersburg region of the Tampa Bay, Florida coastline area. Scale 1:24,000.
Contributing Partner: UNT Libraries Government Documents Department
St. Petersburg, Florida

St. Petersburg, Florida

Date: 1982
Creator: U.S. Fish and Wildlife Service
Description: Map showing biological resources (aquatic organisms, terrestrial organisms, land use, etc.) in the St. Petersburg region of the Gulf of Mexico coast area. Scale 1:250,000.
Contributing Partner: UNT Libraries Government Documents Department
St. Petersburg: Hydrology and Climatology

St. Petersburg: Hydrology and Climatology

Date: 1983
Creator: U.S. Fish and Wildlife Service
Description: Map showing various hydrologic and climatologic aspects (rainfall, measurement stations, hurricane inundation zones, etc.) in the St. Petersburg region of the Florida coastline. Scale 1:100,000.
Contributing Partner: UNT Libraries Government Documents Department
St. Petersburg: Oil, Gas and Mineral Resources

St. Petersburg: Oil, Gas and Mineral Resources

Date: 1983
Creator: U.S. Fish and Wildlife Service
Description: Map showing mineral resources (oil, gas, sand, clay, etc.) in the St. Petersburg region of the Florida coastline. Scale 1:100,000.
Contributing Partner: UNT Libraries Government Documents Department
St. Petersburg: Socioeconomic Features

St. Petersburg: Socioeconomic Features

Date: 1983
Creator: U.S. Fish and Wildlife Service
Description: Map showing various sites and features (recreation sites, land use, landfills, historic sites, transportation, etc.) in the St. Petersburg region of the Florida coastline. Scale 1:100,000.
Contributing Partner: UNT Libraries Government Documents Department
St. Petersburg: Soils and Landforms

St. Petersburg: Soils and Landforms

Date: 1983
Creator: U.S. Fish and Wildlife Service
Description: Map showing various kinds of soils and landforms in the St. Petersburg region of the Florida coastline. Scale 1:100,000.
Contributing Partner: UNT Libraries Government Documents Department