The Vickers "Vendace": A Land or Sea Training Biplane (open access)

The Vickers "Vendace": A Land or Sea Training Biplane

Circular describing the Vickers "Vendace", which is a land or sea training tractor biplane. Details of the design, wings, construction, control surfaces, fuselage, fabric, cockpits, fuel supply, landing gear, characteristics, and drawings are provided.
Date: May 1926
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The Dewoitine D.500 Pursuit Airplane (French): An All-Metal Cantilever Low-Wing Monoplane (open access)

The Dewoitine D.500 Pursuit Airplane (French): An All-Metal Cantilever Low-Wing Monoplane

Circular describing the Dewoitine D.500 pursuit airplane, which is an all-metal cantilever low-wing monoplane. Details of the fuselage, cockpit, control surfaces, weapons, landing gear, fuel tanks, wing, engine, characteristics, performances, drawings, and photographs are provided.
Date: May 1933
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The De Havilland "Moth Three" Airplane (British): A High-Wing Commercial Monoplane (open access)

The De Havilland "Moth Three" Airplane (British): A High-Wing Commercial Monoplane

Circular describing the De Havilland Moth Three, which is a high-wing commercial monoplane with a steeply sloping windshield, strut-bracing of the wing, and relatively orthodox landing gear. Details of the construction, design, characteristics, performance, drawings, and photographs are provided.
Date: May 1930
Creator: unknown
Object Type: Report
System: The UNT Digital Library
A method for studying the hunting oscillations of and airplane with a simple type of automatic control (open access)

A method for studying the hunting oscillations of and airplane with a simple type of automatic control

Report presenting a method for predicting the amplitude and frequency, under certain simplifying conditions, of the hunting oscillations of an automatically controlled aircraft with lag in the control system or in response of the aircraft to the controls. Formulas are given expressing the response to a variation of signal in terms of response to a unit signal.
Date: May 1944
Creator: Jones, Robert T.
Object Type: Report
System: The UNT Digital Library
The effect of compressibility on two-dimensional tunnel-wall interference for a symmetrical airfoil (open access)

The effect of compressibility on two-dimensional tunnel-wall interference for a symmetrical airfoil

Summary: The effective change in the velocity of flow past a wing section, caused by the presence of wind-tunnel walls, is known for potential flow. This theory is extended by investigation of the two-dimensional compressible flow past a thin Rankine Oval. It is shown that for a symmetrical section at zero angle of attack the velocity increment due to the tunnel walls in the incompressible case must be multiplied by the factor 1/1-M^2 to take account of compressibility effects. The Mach number, M, corresponds to conditions in the wind-tunnel test section with the model removed (p. 1.).
Date: May 1943
Creator: Nitzberg, Gerald E.
Object Type: Report
System: The UNT Digital Library
Emergency Measures for Increasing the Range of Fighter Airplanes (open access)

Emergency Measures for Increasing the Range of Fighter Airplanes

"An analysis was made to show the relative effectiveness of streamline external fuel tanks, a fuel tank in the form of a wing mounted in a biplane position, and auxiliary wing panels attached at the wing tips to increase the span as temporary means for increasing the range of a fighter-type airplane. Figures and charts for the various devices considered show the results of calculations of range, duration of flight, and take-off distance for both land-base and carrier operation. The results indicated that the wing-tip extensions were the most promising of the devices considered" (p. 1).
Date: May 1943
Creator: Jones, Robert T. & Wetmore, Joseph W.
Object Type: Report
System: The UNT Digital Library
Fuel-Evaporation Loss as Determined by the Change in the Specific Gravity of the Fuel in an Aircraft Fuel Tank (open access)

Fuel-Evaporation Loss as Determined by the Change in the Specific Gravity of the Fuel in an Aircraft Fuel Tank

Report discusses the results of an investigation to determine the feasibility of using the change in the specific gravity of fuels in aircraft fuel tanks to measure fuel-vaporization loss. Six fuels were tested via fuel-distillation tests and simulated-flight tests. An equation based on the specific gravity of the fuel is also described.
Date: May 1945
Creator: Stone, Charles S. & Kramer, Walter E.
Object Type: Report
System: The UNT Digital Library
An Overview of Pool-Type LMFBRs : General Characteristics (open access)

An Overview of Pool-Type LMFBRs : General Characteristics

This report describes the results of a study conducted by a "Pool Study Group" organized at ANL in mid-1975 to examine the present state of the air of design of pool-type LMFBRs. The study concentrated on examination of various design options used to date in the principle pool-type projects and design studies in this country and abroad, including the Phenix and Super-Phenix reactors (France), PFR and CFR (U.K.), RN-600 (U.S.S.R.) and EBR-II (U.S.A.). The objective of the report is to provide a step toward better understanding of the pool-type system and of the advantages and disadvantages of the various possible approaches to its design.
Date: May 1976
Creator: Amorosi, A.; Hutter, E.; Marciniak, T. J.; Monson, H. O.; Seidensticker, R. W. & Simmons, W. R.
Object Type: Report
System: The UNT Digital Library
Predicted Heat-Transfer Performance of an Evacuated Glass-Jacketed CPC Receiver : Countercurrent Flow Design (open access)

Predicted Heat-Transfer Performance of an Evacuated Glass-Jacketed CPC Receiver : Countercurrent Flow Design

The heat-transfer performance of an evacuated glass-jacketed CPC-receiver facility, free on one end and fixed onto the glass jacket at the other, was carried out using heat-transfer relationships and the best information available in the literature. Specifically, the collector examined was a 3x-CPC facility, 8 ft long, with an entrance aperture 4.5 in. wide covered with a single glass cover, and provided with an aluminum reflecting surface (rho = 0.88). To maximize heat retention, a selectively treated receiver surface, epsilon = 0.11, was used. The optical efficiency of this CPC collector facility was calculated to be eta₀ = 0.536.
Date: May 1976
Creator: Thodos, George
Object Type: Report
System: The UNT Digital Library
The Atomic Spectrum of Neptunium (open access)

The Atomic Spectrum of Neptunium

A description and interpretation of the atomic spectrum of neptunium are given. Wavelengths were measured for 6096 spectrum lines in the range 3793 to 38,812 cm⁻¹ (26,353 to 2575 A), of which 2526 were classified as transitions between 329 odd levels and 130 even levels of neutral neptunium (Np I). The data are presented in five tables.
Date: May 1976
Creator: Fred, Mark; Tompkins, Frank S.; Blaise, Jean E.; Camus, Pierre & Vergès, Jean
Object Type: Report
System: The UNT Digital Library
High-Performance Batteries for Off-Peak Energy Storage and Electric-Vehicle Propulsion, Progress Report: January-March 1976 (open access)

High-Performance Batteries for Off-Peak Energy Storage and Electric-Vehicle Propulsion, Progress Report: January-March 1976

Quarterly report describing the research and management effort of Argonne National Laboratory's program on lithium/metal sulfide batteries during the period January-March 1976. These batteries are being developed for energy storage on utility networks and for electric-vehicle propulsion. The present cells are vertically oriented, piismatic cells with a central positive electrode of FeS or FeS; and two facing negative electrodes of lithium-aluminum alloy, and an electrolyte of molten LiCl-KC1. The cell operating temperature is 400-450C.
Date: May 1976
Creator: Nelson, P. A.; Ivins, R. O.; Yao, N. P.; Battles, J. E.; Chilenskas, A. A.; Gay, E. C. et al.
Object Type: Report
System: The UNT Digital Library
Application of Frequency-Modified Life Approach to the Low-Cycle Fatigue Behavior of Type 304 Stainless Steel (open access)

Application of Frequency-Modified Life Approach to the Low-Cycle Fatigue Behavior of Type 304 Stainless Steel

The application of the frequency-modified life equation to fatigue life prediction has been critically examined using the extensive fatigue data generated for Type 304 stainless steel at 1100 degrees F under a variety of cyclic-loading conditions. The parameters that enter into the frequency-modified life equation vary with strain rate and show a transition coinciding with the frequency of cycling at which a change in the fracture appearance from predominantly transgranular to predominantly intergranular failure mode or vice versa occurs. The accuracy in life prediction is improved when the effect of strain rate on life-predictive parameters is considered. It is shown how the effect of compressive and symmetric hold time on fatigue life can be taken into account. A comparison between the frequency-modified life approach of Coffin and the damage-rate approach recently developed by Majumdar and Maiya is also made to show the importance of wave-shape on low-cycle fatigue life.
Date: May 1976
Creator: Maiya, P. S. & Majumdar, S.
Object Type: Report
System: The UNT Digital Library
Use of Krypton-85 for the Detection of Pinhole Failures in GCFR Cladding (open access)

Use of Krypton-85 for the Detection of Pinhole Failures in GCFR Cladding

Radioactive krypton-85 is used as a tracer to detect pinhole failures in GCFR cladding. High-purity helium (99.99% pure) that contains 0.3 ppm krypton-85 is used to pressurize the tubular test specimens, and a Geiger-Mueller counter is used to detect the krypton-85 in the helium environmental gas as it leaves the test chamber. Under the least favorable conditions of temperature and specimen pressure, it is estimated that the smallest pinhole failure that could be detected within 60 sec would have an orifice diameter of 0.0102 cm. Using lead shielding around the Geiger-Muller counter to reduce background radiation, the electronics associated with the krypton-85 detector will terminate a biaxial creep test at krypton-85 activity levels above 20 counts/minute.
Date: May 1976
Creator: Yaggee, F. L.; Purohit, A. & Poeppel, R. B.
Object Type: Report
System: The UNT Digital Library
Development of Lithium/Metal Sulfide Batteries at Argonne National Laboratory : Summary Report (open access)

Development of Lithium/Metal Sulfide Batteries at Argonne National Laboratory : Summary Report

Overview of the battery program at Argonne National Laboratory being developed for use as energy storage devices for load-leveling on electric utilities and as power sources for electric automobiles.
Date: May 1976
Creator: Nelson, P. A.
Object Type: Report
System: The UNT Digital Library
Environmental Research Division Technical Progress Report: January 1984-December 1985 (open access)

Environmental Research Division Technical Progress Report: January 1984-December 1985

Report on technical progress in the various research and assessment activities of Argonne National Laboratory.
Date: May 1986
Creator: Beasley, T. M.
Object Type: Report
System: The UNT Digital Library
Heat Exchanger Vibration Analysis (HXVA) for Prediction of Tube Bundle Instabilities (open access)

Heat Exchanger Vibration Analysis (HXVA) for Prediction of Tube Bundle Instabilities

Pre and postprocessors have been written for an established hydraulic program (COMMIX-IHX) which enables prediction of the internal crossflow field for each tube of Argonne's Test Heat Exchanger and identification of those tubes most likely to experience fluid-elastic instability, together with the instability vibration mode. While the direct use of the HXVA method is limited to single pass, single-segmentally baffled tube bundle configurations, its algorithms and methods can be applied to any type of heat exchanger which can be analyzed by COMMIX-IHX. The processors are explained and an example problem is given along with comparisons of experimental results.
Date: May 1985
Creator: Mulcahy, T. M.; Wambsganss, M. W. & Yang, C. I.
Object Type: Report
System: The UNT Digital Library
On the Experimental Operation of a Sodium Heat Pipe (open access)

On the Experimental Operation of a Sodium Heat Pipe

This report documents the operation of a 28 in. long sodium heat pipe in the Heat Pipe Test Facility (HPTF) installed at Argonne National Laboratory. Experimental data were collected to simulate conditions prototypic of both a fluidized bed coal combustor application and a space environment application. Both sets of experiment data show good agreement with the heat pipe analytical model. The heat transfer performance of the heat pipe proved reliable over a substantial period of operation and over much thermal cycling. Additional testing of longer heat pipes under controlled laboratory conditions will be necessary to determine performance limitations and to complete the design code validation.
Date: May 1985
Creator: Holtz, Robert E.; McLennan, G. A. & Koehl, E. R.
Object Type: Report
System: The UNT Digital Library
Fiat C.R. 20 Pursuit Airplane (open access)

Fiat C.R. 20 Pursuit Airplane

The Fiat C.R. 20 has an all metal frame covered with fireproof fabric, except for the area near the engines, which is covered in duraluminum. It is armed with 4 machine guns and is capable of 280 KPH.
Date: May 1927
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Profile-Drag Coefficients of Conventional and Low-Drag Airfoils as Obtained in Flight (open access)

Profile-Drag Coefficients of Conventional and Low-Drag Airfoils as Obtained in Flight

"The results of flight investigations of the profile drag of several carefully finished conventional and low-drag airfoils are presented. The results indicated that in all cases lower profile-drag coefficients were obtained with the low-drag than with the conventional airfoils over the range of lift coefficient tested and that, for comparable conditions of lift coefficient and Reynolds number, the low-drag airfoils may have profile-drag coefficients which are at least 27 percent lower than the profile-drag coefficients of the conventional airfoils" (p.1).
Date: May 1944
Creator: Zalovcik, John A.
Object Type: Report
System: The UNT Digital Library
The Mureaux "Brunet 3C2" Pursuit Airplane (open access)

The Mureaux "Brunet 3C2" Pursuit Airplane

Designed by Engineer Brunet, the 3C2 is an all metal monoplane with two engines and provision for six machine guns and 12 10 Kg. bombs. A description of the design, components, characteristics, flying qualities, drawings, and photographs are provided.
Date: May 1927
Creator: Serryer, J.
Object Type: Report
System: The UNT Digital Library
The "I.A.R." Pursuit Airplane (Roumanian) : A One-Place Cantilever Low-Wing Monoplane (open access)

The "I.A.R." Pursuit Airplane (Roumanian) : A One-Place Cantilever Low-Wing Monoplane

Circular presenting a description of the I.A.R. pursuit airplane. Details of the design, ailerons, fuselage, fuel tanks, landing gear, and flying qualities are provided.
Date: May 1931
Creator: unknown
Object Type: Report
System: The UNT Digital Library
An Experimental Investigation of Rectangular Exhaust-Gas Ejectors Applicable for Engine Cooling (open access)

An Experimental Investigation of Rectangular Exhaust-Gas Ejectors Applicable for Engine Cooling

Report presenting an experimental investigation of rectangular exhaust-gas ejector pump to provide data that would serve as a guide to the design of ejector applications for aircraft engines with marginal cooling. With a decrease in the quantity of air pumped and an increase in the length of an ejector, the ejector pressure rise increases to optimum values. Results regarding straight ejectors, diffuser ejectors, curved ejectors, ejector aspect ratio, divided ejectors, multistage ejectors, and nozzle-exit effects are provided.
Date: May 1945
Creator: Manganiello, Eugene J. & Bogatsky, Donald
Object Type: Report
System: The UNT Digital Library
Reciprocity relations in aerodynamics (open access)

Reciprocity relations in aerodynamics

From Introduction: "The purpose of the present paper is twofold. First, a close connection will be established between reverse-flow theorems in subsonic and supersonic, steady-state wing theory and known reciprocity relations between two solutions of the equation the flow field."
Date: May 1952
Creator: Heaslet, Max A. & Spreiter, John R.
Object Type: Report
System: The UNT Digital Library
An Investigation of a Thermal Ice-Prevention System for a C-46 Cargo Airplane 5: Effect of Thermal System on Airplane Cruise Performance (open access)

An Investigation of a Thermal Ice-Prevention System for a C-46 Cargo Airplane 5: Effect of Thermal System on Airplane Cruise Performance

Report presenting flight tests conducted to evaluate the effect of a thermal ice prevention system on the aerodynamic performance of a C-46 cargo airplane. The installation of the thermal ice-prevention system was found to reduce the indicated airspeed by about 6 miles per hour. Results regarding the overall performance change resulting from the installation of the thermal system, reduction of power attributed to heat-exchanger exhaust-gas back pressure, reduction of power attributed to the internal and external drag of the thermal system, and the additional airplane gross weight attributed to the thermal system are provided.
Date: May 1945
Creator: Selna, James
Object Type: Report
System: The UNT Digital Library