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NACA Research Memorandums
412
NACA Technical Notes
327
Atomic Energy Commission Reports
304
GJBX
184
United States Department of Energy Grand Junction Office Reports
161
United States Geological Survey Reports
146
NACA Technical Memorandums
105
NACA Wartime Reports
104
Argonne National Laboratory Reports
83
Trace elements investigations report
78
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The Lioré-Olivier "Le 0.240" Commercial Seaplane (French): A High-Wing Cantilever Monoplane
Circular presenting a description of the Le 0.240, which is a cantilever monoplane invented by the Lioré-Olivier Company. Information regarding the wings, profile, fuel tanks, construction, ailerons, hull, controls, and flight characteristics is provided.
Date:
February 1930
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Dornier "Do.X" Flying Boat (German) : A Giant High-Wing Monoplane
Circular presenting a description of the Dornier Do.X flying boat. Details are provided regarding the structural details, flying qualities, and photographs.
Date:
February 1930
Creator:
Dornier, Claude
Object Type:
Report
System:
The UNT Digital Library
The Amiot 140 M Military Airplane (French): An All-Metal Multiplace High-Wing Monoplane
Circular presenting the Amiot 140 M, which is the first of a series of airplanes that have been developed by a French aircraft manufacturer. A description of the design, dimensions, flight characteristics, blueprints, and photographs are provided.
Date:
February 1931
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Final Summary Report of Fuel-Dynamics Tests H2 and E4
Results of two failure experiments using LMFBR-type fuel during simulated unprotected transient overpower accidents are reported and analyzed. In both experiments, a single fresh fuel pin in a Mark0IIA loop was subjected to a temperature-limited, step-reactivity irradiation in the TREAT reactor. Total energy was 490 MJ in Test H2 and in Test E4.
Date:
February 1976
Creator:
Doerner, R. C.; Rothman, A. B.; De Volpi, A.; Dickerman, Charles Edward; Deitrich, L. W.; Stahl, D. et al.
Object Type:
Report
System:
The UNT Digital Library
Analytical Investigation of Certain Aspects of LMFBR Subassembly-Failure Propagation
An analytical investigation of certain problems in the area of subassembly-to-subassembly failure propagation in LMFBR's is described. Existing analyses of the response of the adjacent subassembly duct to mechanical loads are reviewed and summarized, and major uncertainties are identified. Additional analyses of the response of the adjacent subassembly to certain thermal loads are presented in two parts. In the first part, the effect of an external heat flux on duct melting and thermal stresses is considered. The external heat fluxes required to produce duct melting or excessive thermal stresses are compared with the heat fluxes that might be expected from the molten fuel deposited on the duct wall. In the second part, a thermal-hydraulic study is performed to investigate the effect of the external heat flux on the coolant temperature distribution in the adjacent subassembly. Both normal subassembly geometry and distorted subassembly geometry are considered. A detailed model of the coolant region formed by the heated duct wall and the displaced fuel pins is also analyzed to determine whether there are severe temperature gradients.
Date:
February 1976
Creator:
Marr, William W.; Wang, P. Y.; Misra, B.; Padilla, A. & Crawford, R. M.
Object Type:
Report
System:
The UNT Digital Library
Chemical Technology Division Annual Technical Report for 1984
Report on studies of advanced batteries, aqueous batteries, advanced fuel cells, coal utilization, methodologies for recovery of energy from municipal waste, solid and liquid desiccants, nuclear technology related to waste management, and physical chemistry of selected materials in environments simulating those of fission, fusion, and other energy systems.
Date:
February 1985
Creator:
Argonne National Laboratory. Chemical Technology Division.
Object Type:
Report
System:
The UNT Digital Library
An Alternative Library Under 4. 2 BSD UNIX on a VAX 11/780
This paper describes an alternative library of elementary functions prepared for use with the standard Fortran compiler under 4.2 BSD UNIX on a VAX 11/780. The library, written in C and based on the book ''Software Manual for the Elementary Functions'' by Cody and Waite, offers improved accuracy over the standard system library, as well as additional capabilities. Listings and output from the ELEFUNT suite of test programs are included in the appendix.
Date:
February 1986
Creator:
Cody, William James
Object Type:
Report
System:
The UNT Digital Library
Analysis of Heat-Pipe Absorbers in Evacuated-Tube Solar Collectors
Heat transfer in evacuated-tube solar collectors with heat-pipe absorbers is compared with that for similar collectors with flow-through absorbers. In systems that produce hot water or other heated fluids, the heat-pipe absorber suffers a heat transfer penalty compared with the flow-through absorber, but in many cases the penalty can be minimized by proper design at the heat-pipe condenser and system manifold. The heat transfer penalty decreases with decreasing collector heat loss coefficient, suggesting that evacuated tubes with optical concentration are more appropriate for use with heat pipes than evacuated or non-evacuated flat-plate collectors. When the solar collector is used to drive an absorption chiller, the heat-pipe absorber has better heat transfer characteristics than the flow-through absorbers.
Date:
February 1986
Creator:
Hull, John R.; Schertz, William W. & Allen, John W.
Object Type:
Report
System:
The UNT Digital Library
Heat Extraction from the ANL Research Salt Gradient Solar Pond
This report documents the design considerations and test results of two heat extraction systems for the ANL Research Salt Gradient Solar Pond (RSGSP). Since operation began in November 1980, the RSGSP has been used to study a wide variety of solar pond phenomena, and the behavior of the RSGSP without heat extraction has been well characterized. Heat extraction equipment was installed in the spring of 1984, with heat extraction experiments conducted the following summer and fall and in the fall of 1985. The experiments simulated the use of the solar pond for grain drying. The effects of both heat extraction methods on the stability of the salt gradient are investigated.
Date:
February 1986
Creator:
Hull, John R.; Scranton, A. B.; Mehta, J. M.; Cho, S. H. & Kasza, Kenneth Edmund
Object Type:
Report
System:
The UNT Digital Library
Decontamination and Decommissioning of the Argonne National Laboratory Building 350 Plutonium Fabrication Facility : Final Report
In 1973, Argonne National Laboratory began consolidating and upgrading its plutonium-handling operations with the result that the research fuel-fabrication facility located in Building 350 was shut down and declared surplus. Sixteen of the twenty-three gloveboxes which comprised the system were disassembled and relocated for reuse or placed into controlled storage during 1974 but, due to funding constraints, full-scale decommissioning did not start until 1978. Since that time the fourteen remaining contaminated gloveboxes, including all internal and external equipment as well as the associated ventilation systems, have been assayed for radioactive content, dismantled, size reduced to fit acceptable packaging and sent to a US Department of Energy (DOE) transuranic retrievable-storage site or to a DOE low-level nuclear waste burial ground. The project which was completed in 1983, required 5 years to accomplish, 32 man years of effort, produced some 540 cubic meters (19,000 cubic ft) of radioactive waste of which 60% was TRU, and cost 2.4 million dollars.
Date:
February 1985
Creator:
Kline, W. H.; Moe, H. J. & Lahey, T. J.
Object Type:
Report
System:
The UNT Digital Library
The Reaction of Glass During Gamma Irradiation in a Saturated Tuff Environment: Part 1, SRL 165 Glass
The influence of gamma irradiation on the reaction of actinide-doped borosilicate glass (SRL 165) in a saturated tuff environment has been studied in a series of tests lasting up to 56 days. The following conclusions were reached. The reaction of, and subsequent actinide release from, the glass depends on the dynamic interaction between radiolysis effects, which cause the solution pH to become more acidic; glass reaction, which drives the pH more basic; and test component interactions that may extract glass components from solution. The use of large gamma irradiation dose rates to accelerate reactions that may occur in an actual repository radiation field may affect this dynamic balance by unduly influencing the mechanism of the glass-water reaction. Comparisons between the present results and data obtained by reacting similar glasses using MCC-1 and NNWSI rock cup procedures indicate that the irradiation conditions used in the present experiments do not dramatically influence the reaction rate of the glass.
Date:
February 1986
Creator:
Bates, John K.; Fischer, Donald F. & Gerding, Thomas J.
Object Type:
Report
System:
The UNT Digital Library
Transforming Fortran DO Loops to Improve Performance on Vector Architectures
The performance of programs executing on vector computers is significantly improved when the number of accesses to memory can be reduced. Unrolling Fortran DO loops, followed by substitutions and eliminations in the unrolled code, can reduce the number of loads and stores. The unrolling transformation and associated transformations of Fortran DO loops are characterized, and a set of software tools to carry out these transformations is described. The tools use the machinery available in Toolpack and have been integrated into that environment. The results of applying these tools to a collection of linear algebra subroutines are included.
Date:
February 1986
Creator:
Cowell, Wayne R. & Thompson, Christopher P.
Object Type:
Report
System:
The UNT Digital Library
Effect of Depth of Discharge on Lead-Acid Battery Overcharge Requirements
Proper charging is essential to achieve maximum performance and life of lead-acid batteries. Excessive overcharging gives rise to increased battery temperature, gassing rates, electrolyte maintenance, and component corrosion, whereas repeated undercharging causes a gradual decrease in battery capacity, which often becomes irreversible. To develop an optimal charge procedure, the relation between battery available capacity, applied overcharge, and the depth-of-discharge (DOD) level prior to charging needed to be established.
Date:
February 1986
Creator:
DeLuca, W. H. & Tummillo, A. F.
Object Type:
Report
System:
The UNT Digital Library
The Dewoitine D.30 Commercial Airplane (French): A High-Wing Cantilever Monoplane
Circular describing the Dewoitine D.30, which is a commercial high-wing cantilever monoplane. Details of the wing, fuselage, tail surfaces, landing gear, flight controls, electrical equipment, sending-receiving wireless installation, power plant, characteristics, performance, drawings, and photographs are provided.
Date:
February 1931
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
A Concise Theoretical Method for Profile-Drag Calculation; Advance Report
In this report a method is presented for the calculation of the profile drag of airfoil sections. The method requlres only a knowledge of the theoretical velocity distribution and can be applied readily once this dlstribution is ascertained. Comparison of calculated and experimental drag characteristics for several airfoils shows a satisfactory agreement. Sample calculatlons are included.
Date:
February 1944
Creator:
Nitzberg, Gerald E.
Object Type:
Report
System:
The UNT Digital Library
An Investigation of a Thermal Ice-Prevention System for a C-46 Cargo Airplane 3: Description of Thermal Ice-Prevention Equipment for Wings, Empennage, and Windshield
Report presenting an investigation of a thermal ice-prevention system for a Curtiss-Wright C-46 airplane, including the equipment for the wings, empennage, and windshield. The report is the third in a series and focuses on the revisions to the components for thermal ice prevention, the temperature- and pressure-measurement equipment installed in the airplane to determine the performance of the system, and the results of static-load structural tests of a specimen of the wing outer-panel leading edge.
Date:
February 1945
Creator:
Jones, Alun R. & Spies, Ray J., Jr.
Object Type:
Report
System:
The UNT Digital Library
An Investigation of a Thermal Ice-Prevention System for a C-46 Cargo Airplane 4: Results of Flight Tests in Dry-Air and Natural-Icing Conditions
Report presenting an investigation of a thermal ice-prevention system for a C-46 cargo airplane, which involved flight tests in dry-air and natural-icing conditions at two different laboratories. The purpose of the investigation was to determine the effectiveness of the C-46 airplane ice-prevention system and to continue the develop of thermal ice-prevention equipment. Results regarding the wing outer panel, wing tips, wing center panel, horizontal stabilizers, vertical fin, windshields, ice-removal tests, unprotected surfaces, and heat exchangers are provided.
Date:
February 1945
Creator:
Selna, James; Neel, Carr B., Jr. & Zeiller, E. Lewis
Object Type:
Report
System:
The UNT Digital Library
The Use of Geared Spring Tabs for Elevator Control
Report discussing the use of two types of geared spring tabs for elevator control: ordinary (or ungeared) spring tabs and geared spring tabs. Their use in airplanes of various sizes and in comparison to conventional control systems is described.
Date:
February 1945
Creator:
Phillips, William H.
Object Type:
Report
System:
The UNT Digital Library
The Boulton and Paul "Partridge" (British): All-Metal Single-Seat Fighter
The Partridge is a tractor biplane of orthodox design. It has a single supercharged Jupiter VII engine.
Date:
February 1929
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Avia 51 Commercial Airplane (Czechoslovakian): A Cantilever High-Wing Monoplane
Circular describing the Avia 51 commercial airplane, which is a Czechoslovakian cantilever high-wing monoplane with a fairly orthodox design. Details of the performance, construction, wing, ailerons, fuselage, landing gear, engines, characteristics, drawings, and photographs are provided.
Date:
February 1934
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Further Measurements of Normal Accelerations on Racing Airplanes
This report details the acceleration data collected from racing airplanes during actual races. The data was collected in order to make recommendations regarding the structural safety of racing airplanes and the methods of operating racing airplanes that reduces the probability of subjecting them to extreme air loads. The records do not lead to any conclusions regarding maximum air loads.
Date:
February 1936
Creator:
Kirschbaum, H. W. & Scudder, N. F.
Object Type:
Report
System:
The UNT Digital Library
The Comper C(La)7 "Swift" Airplane (English): A High-Wing Single-Seat Monoplane
Circular describing the Comper C(La)7 Swift airplane, which is a high-wing single-seat monoplane with performance equal to that of a modern two-seat light airplane. Details of the view, aerodynamic design, wing, landing gear, cockpit, fuel tanks, engine, characteristics, drawings, and photographs are provided.
Date:
February 1930
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
An Investigation of a Thermal Ice-Prevention System for a C-46 Cargo Airplane 2: The Design, Construction, and Preliminary Tests of the Exhaust-Air Heat Exchanger
Report presenting an investigation of an exhaust-air heat exchanger, which has been designed, constructed, and flight-tested for a C-46 cargo airplane. The primary purpose of the investigation was to provide the C-46 airplane with a satisfactory source of heated air and to continue the development of the heat exchanger as a part of thermal ice-prevention equipment. Results indicated that the required thermal output and desired air-temperature rise have been achieved and that the exchanger is suitable for use in the C-46 airplane.
Date:
February 1945
Creator:
Jackson, Richard
Object Type:
Report
System:
The UNT Digital Library
Latécoère 38-0 Flying Boat (French): A Long-Range Sesquiplane for Carrying Mail
Report describing the Latécoère 38-0, which is a transatlantic mail seaplane. A description of the design, flight characteristics, and some of its special features is provided.
Date:
February 1931
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library