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A Flight Investigation of the Lateral Control Characteristics of Short Wide Ailerons and Various Spoilers With Different Amounts of Wing Dihedral

Description: This report presents the results of flight tests made to determine the lateral control characteristics of short wide ailerons and spoilers, as a consequence of the promise shown in wind-tunnel tests by these devices as means of obtaining lateral control, particularly at angles of attack above the stall. Several forms of spoilers, front-hinge, rear-hinge, plain retractable, and saw-tooth retractable were tested alone and in combination with the ailerons. The tests were made with several differen… more
Date: May 19, 1934
Creator: Weick, Fred E.; Soulé, Hartley A. & Gough, Melvin N.
Partner: UNT Libraries Government Documents Department
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Time Variation of Percent Distribution of Fission Activity in Bombarded Uranyl Nitrate

Description: "In this report are presented three figures which show how the relative activities (expressed as percentages of total activity) of the individual fission elements (produced by neutron bombardment of uranyl nitrate) vary with cooling time."
Date: May 19, 1943
Creator: Brady, E. L. & Coryell, Charles D.
Partner: UNT Libraries Government Documents Department
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Summary of measurements in Langley full-scale tunnel of maximum lift coefficients and stalling characteristics of airplanes

Description: "The results of measurements in the Langley full-scale tunnel of the maximum lift coefficients and stalling characteristics of airplanes have been collected. The data have been analyzed to show the nature of the effects on maximum lift and stall of wing geometry, fuselages and nacelles, propeller slipstream, surface roughness, and wing leading-edge appendages such as ducts, armaments, tip slats, and airspeed heads. Comparisons of full-scale-tunnel and flight measurements of maximum lift and sta… more
Date: May 19, 1944
Creator: Sweberg, Harold H. & Dingeldein, Richard C.
Partner: UNT Libraries Government Documents Department
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Altitude-wind-tunnel investigation of thrust augmentation of a turbojet engine II: performance with water injection at compressor inlet

Description: Report presenting testing of a standard turbojet engine by water injection at the inlet of the axial-flow compressor in the altitude wind tunnel. Engine performance at 7600 rpm was obtained over a wide range of water-air-pressure ratios and ram-pressure ratios. Results regarding the engine-component performance are also provided.
Date: May 19, 1947
Creator: Dietz, Robert O. & Fleming, William A.
Partner: UNT Libraries Government Documents Department
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Temperature moments vs poison moments

Description: The excess reactivity available in an operating pile is absorbed in poison columns and horizontal rods. The temperature distribution of the pile is determined by the relative strengths and locations of the poison columns and the configuration of control rods used. A method for adjusting poison columns and rods to improve upon the pile`s temperature distribution is given in Document {number_sign}7-2654, ``Procedure for Improving Temperature Distribution via Rods and Columns,`` Wheeler and Menegu… more
Date: May 19, 1947
Creator: Staebler, U. M.
Partner: UNT Libraries Government Documents Department
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Aerodynamic study of a wing-fuselage combination employing a wing swept back 63 degrees: Effects of split flaps, elevons, and leading-edge devices at low speed

Description: Report presenting an investigation to evaluate the effects of split flaps, elevons, sharp leading edges, drooped-nose flaps, and extended-nose flaps on the lift, drag, and pitching-moment characteristics at low speed of a wing-fuselage combination with a wing with the leading edge swept back 63 degrees and an aspect ratio of 3.5. Results regarding the plain wing and wing-fuselage combinations, Reynolds number, split flaps, elevons, leading-edge devices, and highest lift coefficient attained bef… more
Date: May 19, 1949
Creator: Hopkins, Edward J.
Partner: UNT Libraries Government Documents Department
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Final report on Production Test No. 105-245-P -- Effectiveness of cadmium coated splines

Description: This report discussed cadmium coated splines which have been developed to supplement the regular control rod systems under emergency shutdown conditions from higher power levels. The objective of this test was to determine the effectiveness of one such spline placed in a tube in the central zone of a pile, and of two splines in the same tube. In addition, the process control group of the P Division asked that probable spline requirements for safe operation at various power levels be estimated, … more
Date: May 19, 1949
Creator: Carson, A. B.
Partner: UNT Libraries Government Documents Department
open access

Flight Measurements With the Douglas D-558-II (BuAero No. 37974) Research Airplane: Static Lateral and Directional Stability Characteristics as Measured in Sideslips at Mach Numbers Up to 0.87

Description: Report presenting flight measurements in sideslips of the static lateral and directional stability characteristics of the Douglas D-558-II airplane. It is part of an investigation to determine the stability and control characteristics and aerodynamic loads acting on the wing and horizontal tail of an airplane from stalling speed up to a maximum Mach number of 0.90. Results regarding variations of rudder, total aileron, elevator control positions and control forces, aileron position, and aerodyn… more
Date: May 19, 1950
Creator: Sjoberg, S. A.
Partner: UNT Libraries Government Documents Department
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Wind-tunnel investigation at low speed to determine aerodynamic properties of a jettisonable nose section with circular cross section

Description: Report presenting the aerodynamic properties of a model of a jettisonable nose section with a circular cross section as determined at low speed from an investigation in the 20-foot free-spinning tunnel. The results indicated that the aerodynamic characteristics of the nose were greatly affected by proximity to the fuselage. Even for a stabilized nose, it may be necessary to eject the nose forward forcibly in order to prevent high accelerations along the backbone of the pilot.
Date: May 19, 1950
Creator: Goodwin, Roscoe H.
Partner: UNT Libraries Government Documents Department
open access

Aerodynamic Loading Characteristics of a Wing-Fuselage Combination Having a Wing of 45 Degrees Sweepback Measured in the Langley 8-Foot Transonic Tunnel

Description: Report presenting an investigation of the aerodynamic loading characteristics of a wing-fuselage combination in the slotted test section of the transonic tunnel. The test was part of a systematic investigation of the effects of varying the amount of sweepback on wings in order to determine their suitability for transonic flight. Results regarding span load characteristics, normal-force characteristics, wing-tip angle of twist, spanwise distribution of section pitching-moment coefficient, pitchi… more
Date: May 19, 1952
Creator: Loving, Donald L. & Williams, Claude V.
Partner: UNT Libraries Government Documents Department
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Critical mass studies of plutonium solutions

Description: The chain reacting conditions for plutonium nitrate in water solution have been examined experimentally for a variety of sizes of spheres and cylinders. The effects on the critical mass of the displacement of hydrogen and the addition of poisons to the fuel were measured in water tamped and bare reactors. In this report the data obtained in the investigation is presented graphically and in tables. Some preliminary analysis has been made yielding the results: (i) the absorption cross-section of … more
Date: May 19, 1952
Creator: Kruesi, F. E.; Erkman, J. O. & Lanning, D. D.
Partner: UNT Libraries Government Documents Department
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Normal Accelerations and Associated Operating Conditions on Four Types of Commercial Transport Airplanes From VGH Data Available as of September 1951

Description: Memorandum presenting results obtained from time-history records of normal accelerations, airspeed, and altitude. Additional data have been obtained from the operations of two types of commercial transport airplanes together with data on two other types of transport airplanes.
Date: May 19, 1952
Creator: Steiner, Roy & Persh, Doris A.
Partner: UNT Libraries Government Documents Department
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Preliminary evaluation of Pennsalt A-10 and Turco ``Aviation`` Cleaner for cleaning aluminum caps and cans

Description: The Process Unit has requested the Present Canning group to evaluate two alkaline cleaners, Pennsalt A-10 and Turco ``Aviation`` Cleaner, as possible substitutes for the present trichloroethylene vapor degreaser and Duponol wash. Disadvantages of the present cleaning procedure are: ineffectiveness; expense; toxicity of trichloroethylene. The alkaline cleaners Pennsalt A-10 and Turco ``Activation`` Cleaner were tested and compared with an alkaline cleaner made from Na{sub 2}CO{sub 3} and Na{sub … more
Date: May 19, 1952
Creator: Weakley, E. A.
Partner: UNT Libraries Government Documents Department
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Use of an Aerodynamically Pulsed All-Movable Horizontal Tail to Obtain Longitudinal Characteristics of Rocket-Powered Models in Free Flight and Some Initial Results From an Arrow-Wing-Body-Tail Configuration

Description: Report presenting the application of an aerodynamically pulsed horizontal tail to determine experimentally the longitudinal aerodynamic characteristics of a rocket-powered model in free flight. Results regarding time history, lift and drag, and tail effectiveness and downwash are provided.
Date: May 19, 1952
Creator: Gillespie, Warren, Jr. & Dietz, Albert E.
Partner: UNT Libraries Government Documents Department
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Full Scale 48 MC Cavity For Sparking Tests of Gaps Corresponding to 0.45 To 4.5 Mev Beam Energy

Description: It is proposed to test gaps corresponding to deuteron energies in the range of 0.45 to 4.5 Mev. The accelerator to be modeled is a 48 mc/sec cylindrical cavity in the TM010 mode with [formula] repeat length, [formula] gap, 0.25 megavolt per cavity foot peak r.f. gradient and strong focusing magnets alternating polarity at each drift tube.
Date: May 19, 1953
Creator: Unnam, Craig S.
Partner: UNT Libraries Government Documents Department
open access

APPR critical experiment program meeting

Description: This report addresses the APPR critical experiment program meeting.
Date: May 19, 1955
Creator: Gallagher, J G
Partner: UNT Libraries Government Documents Department
open access

Low-Melting Alloys for Cast Fuel Elements

Description: The following report follows an investigation made to determine the composition of uranium-rich ternary eutectic alloys most suitable for reactor application in the as-cast condition. These determinations were made based metallographic examination and thermal analysis of as-cast alloys.
Date: May 19, 1955
Creator: Saller, Henry A.; Rough, Frank A. & Bauer, Arthur A.
Partner: UNT Libraries Government Documents Department
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A Study of the Fabrication Failures for Zirconium and Zircaloy-2 Process Tubes and of the Annealing and Cold Rolling of Zircaloy-2

Description: A study of the fabrication failures for zirconium and zircaloy-2 process tubes was made. In the tube reducing operation, a non-uniform reduction in area for the cross section was found to be a major cause of failure. In annealing studies, a cycle of 2 hours at 820 deg C in vacuum followed by furnace cooling produced the greatest ductility of extruded zircaloy-2 for the annealing treatments studied. The ductility of cold worked and annealed zircaloy-2 was found to be superior to that of extruded… more
Date: May 19, 1955
Creator: Johnson, Dale E.
Partner: UNT Libraries Government Documents Department
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Direct Interaction Neutrons from 14-Mev Inelastic Neutron Scattering

Description: Abstract: "Neutron nonelastic cross sections measured at different detector biases have been used to determine the cross sections for inelastically scattering 14 Mev neutrons into 9- to 14-Mev energy range. The cross section for producing these high energy neutrons, which may be attributed to direct interaction processes, is roughly 10% of the nonelastic cross section, for all elements. A comparison is made with data of Coon and co workers, who measured angular distributions for the same high-… more
Date: May 19, 1958
Creator: MacGregor, Malcolm H.
Partner: UNT Libraries Government Documents Department
open access

Direct Interaction Neutrons From 14-MeV Inelastic Neutron Scattering

Description: BS>Neutron nonelastic cross sections measurcd at different detector biases have been used to determine the cross sections for inelastically scattering 14-Mev neutrons into 9- to 14-Mev energy range. The cross section for producing these high-energy neutrons, which may be attributed to direct interaction processes, is roughly 10% of the nonelastic cross section, for all elements. A comparison is made with data of Coon and co-workers, who measured angular distributions for the samc high-energy in… more
Date: May 19, 1958
Creator: MacGregor, M. H.
Partner: UNT Libraries Government Documents Department
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