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Characteristics of a Hydraulic Control Determined from Transient Data Obtained with a Turbojet Engine at Altitude

Description: Memorandum presenting characteristics of a hydraulic control as determined by analyzing transient data obtained with a turbojet engine operating in the altitude wind tunnel. The excellent overall performance of the speed control is attributed to the elimination of large lags in the control system, thereby permitting the use of relatively high loop gains while still maintaining satisfactory damping in transients. Some information regarding the frequency-response analysis of speed control, simula… more
Date: June 16, 1954
Creator: Vasu, George; Hinde, William L. & Craig, R. T.
Item Type: Refine your search to only Report
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Combined compressor coolant injection and afterburning for turbojet thrust augmentation

Description: Report presenting a discussion of some of the requirements and of the application of the augmented performance of compressor coolant injection and afterburning in a turbojet engine in a high-speed, high-altitude flight. Results regarding the experimental performance of a combined system and the application of augmented performance to high-speed flight are provided.
Date: September 16, 1954
Creator: Useller, James W.; Huntley, S. C. & Fenn, David B.
Item Type: Refine your search to only Report
open access

Comparison of Wind-Tunnel, Rocket, and Flight Drag Measurements for Eight Airplane Configurations at Mach Numbers Between 0.7 and 1.6

Description: Report presenting comparisons of low-lift drag measurements on eight airplane configurations at a range of Mach numbers by various techniques. Data was obtained from wind tunnel testing, rocket propelled model tests, and airplane flight tests. The agreement of data is generally good and no consistent Reynolds number effects are observed.
Date: September 16, 1954
Creator: Purser, Paul E.
Item Type: Refine your search to only Report
open access

Comparison of Wind-Tunnel, Rocket, and Flight Drag Measurements for Eight Airplane Configurations at Mach Numbers Between 0.7 and 1.6

Description: Report presenting comparisons of low-lift drag measurements on eight airplane configurations at a range of Mach numbers using various techniques. Data was obtained from wind-tunnel testing, rocket-propelled model testing, and airplane flight testing. The majority of the data showed agreement and discrepancies were likely due to issues regarding surface condition, individual test setup and accuracy, and detail geometric differences between the airplanes and respective models.
Date: September 16, 1954
Creator: Purser, Paul E.
Item Type: Refine your search to only Report
open access

The Crystal Structures of Oxalic Acid Dihydrate and Alpha Iodic Acid as Determined by Neutron Diffraction

Description: The crystal structure of oxalic acid dihydrate and alpha iodic acid were determined by neutron diffraction. Several modern techniques were utilized in analyzing the data, including Fourier series, structure factor inequalities, statistical intensity distributions, least squares, and Fourier peak shape analysis. The positions of all the atoms, including hydrogen, were determined.
Date: August 16, 1954
Creator: Garrett, B. S.
Item Type: Refine your search to only Report
open access

Effect of a Leading-edge Flap upon the Lift, Drag, and Pitching Moment of an Airplane Employing a Thin, Unswept Wing

Description: From Summary: "The effects of deflecting full-span, constant-chord, leading-edge flaps, having either round or sharp leading edges, upon the lift, drag, and pitching moment characteristics of a model of an interceptor-type aircraft have been determined experimentally at subsonic and supersonic speeds. Results indicate that the variations of lift with angle of attack and of pitching moment with lift were unaffected by either the shape of the flap leading edge or flap deflection. Deflection of th… more
Date: February 16, 1954
Creator: Heitmeyer, John C.
Item Type: Refine your search to only Report
open access

The Fabrication of Subassemblies for the Supercritical-Water Reactor

Description: In studies of the fabrication of fuel subassemblies for the supercritical-water reactor, the limited ductility of stainless steel-UO₂ fuel sheet made the fabrication of corrugated-flat-plate-type subassemblies impractical. A fabricable MTR-type assembly, 5/8 in. square and 30 in. long, was developed. Methods for edge cladding fuel sheet were developed and a brazing alloy, GE-75, was found to be corrosion resistant in supercritical water.
Date: August 16, 1954
Creator: Keeler, J. R. & Hare, Alan W.
Item Type: Refine your search to only Report
open access

THE FABRICATION OF SUBASSEMBLIES FOR THE SUPERCRITICAL-WATER REACTOR

Description: In studies of the fabrication of fuel subassemblies for the supercritical-water reactor, the limited ductility of stainless steel-UO/sub 2/ fuel sheet made the fabrication of corrugated-flat-plate-type subassemblies impractical. A fabricable MTR-type assembly, 5/8 in. square and 30 in. long, was developed. Methods for edge cladding fuel sheet were developed and a brazing alloy, GE-75, was found to be corrosion resistant in supercritical water. (auth)
Date: August 16, 1954
Creator: Keeler, J.R. & Hare, A.W.
Item Type: Refine your search to only Report
open access

The Fission Cross Section f Factor of Pu²³⁹

Description: A presentation of the values for the Pu²³⁹ fission cross section f factor extended into a higher energy range than previously reported in BNL-250. The values were obtained by integrating the standard expression defining the f factor on the Hanford IBM-CPC equipment. The un-fit experimental data of Leonard, as corrected for resolution and doppler effect, was used above 0.03 ev being attached to an analytic fit applicable below this point. Results are shown on the accompanying graph.
Date: December 16, 1954
Creator: Stuart, G. W.
Item Type: Refine your search to only Report
open access

Lawrence Radiation Laboratory Medical and Health Physics Quarterly Report: January - March 1954

Description: The following quarterly report covers the period of January, February and March of 1954, discussing medical and health physics such as: the metabolic properties of various materials, biological studies of radiation effects, lipoprotein studies, health chemistry, and health physics.
Date: May 16, 1954
Creator: Lawrence Radiation Laboratory
Item Type: Refine your search to only Report
open access

MEETING XII -- BEVATRON RESEARCH CONFERENCE -- BEVATRON OPERATION

Description: On February 2, the first 10 Mev proton beau was injected from the linear accelerator. Injection parameters were varied to study first turn beams with the magnet excited by a d-c generator. A few minutes after the magnetic field had been adjusted to the value calculated from magnetic measurements. the 180{sup o} beam was observed on fluorescent flags and measured with Faraday cups. During the remainder of the week several radio frequency components were installed and operated. Ground current sig… more
Date: March 16, 1954
Creator: Cork, Bruce.
Item Type: Refine your search to only Report
open access

Performance of a vaporizing annular turbojet combustor at simulated high altitudes

Description: Report presenting an experimental vaporizing annular combustor that evolved from a high-performance annular combustor developed for vapor-fuel injection. The combustor consisted of a one-quarter sector of a single-annulus combustor designed to fit in a housing with an outside diameter of 25.5 inches, an inside diameter of 10.6 inches, and a combustor length of approximate 23 inches. Results regarding the performance of the Model 29I combustor, performance of Model 30, and performance of the bes… more
Date: September 16, 1954
Creator: Norgren, Carl T.
Item Type: Refine your search to only Report
open access

Performance of mixed-flow impeller, model MFI-1B, with diffuser vanes at equivalent impeller speeds from 1100 to 1700 feet per second

Description: Report presenting an investigation of the performance characteristics of a mixed-flow impeller (Model MFI-1B) in combination with a vaned diffuser. The results indicated that the peak pressure ratio and maximum efficiency were not being obtained at overdesign speeds because of premature surge. Increasing inlet angle at the leading edge of the vanes improved the pressure ratio and efficiency at overdesign speeds with little to no effect on underdesign speeds.
Date: June 16, 1954
Creator: Osborn, Walter M.
Item Type: Refine your search to only Report
open access

THE PREPARATION OF PLUTONIUM(IV) AMMONIUM FLUORIDE AND ITS DECOMPOSITION TO PLUTONIUM TETRAFLUORIDE FOR SUBSEQUENT REDUCTION TO METAL

Description: An exothermic reaction was shown to take place between low temperature plutonium dioxide and ammonium bifluoride at 50 to 250 deg C, The reaction goes essentially to completion with the formation of the pink plutonium(IV) ammonium fluoride, This compound can be decomposed at 300 deg C and the resulting plutonium tetrafluoride dehydrated at 500 deg C. Analyses showed that plutonium tetrafluoride prepared in this manner is approximately 90% converted from the dioxide. On a twenty gram scale avera… more
Date: March 16, 1954
Creator: Tolley, W.B.
Item Type: Refine your search to only Report
open access

Quarterly progress report - metallurgy unit - April 1954--June 1954

Description: Four irradiated tensile specimens were tested in the Radiometallurgy laboratory. The uranium was from a lot rolled at Simonds Saw and STeel Company, then beta heat treated by the triple dip process. The samples were irradiated to 310 MWD/AT. The corrected exposure was 620 MWD/T after compensating for the decrease in flux depression due to the specimen size. Two of the irradiated specimens were tested in the as-received condition while the other two were vacuum annealed at 400{degree}C for 15 ho… more
Date: July 16, 1954
Creator: Cadwell, J.J.
Item Type: Refine your search to only Report
open access

TBX plant study

Description: A new separations plant using a Purex type flow sheet has been proposed for the 200-West area. The proposed plant, which has been named TBX, would replace the two bismuth phosphate type plants, but it would use existing 200-T and 200-U area facilities. Substantial savings in operating costs, a potential capacity increase for the 200-Areas, and a reduction in plutonium losses are incentives for making the change.
Date: September 16, 1954
Creator: Johnson, H. G.
Item Type: Refine your search to only Report
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