Resource Type
Serial/Series Title
NACA Research Memorandums
266
NACA Technical Notes
151
Atomic Energy Commission Reports
130
United States Geological Survey Reports
57
Hanford Works Reports
49
University of California Radiation Laboratory Reports
35
HW (Series)
33
Trace elements investigations report
33
AECU (Series)
28
NACA Technical Reports
23
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A Balsa-Dust Technique for Air-Flow Visualization and Its Application to Flow Through Model Helicopter Rotors in Static Thrust
Note presenting a method of visualizing air-flow patterns by observing the motion of finely divided particles of balsa wood introduced into the air. Photographic results obtained by this method for small-scale models of several helicopter rotor configurations in the static-thrust condition are presented. The results indicate the feasibility of using the balsa-dust technique for obtaining useful qualitative information on the air-flow patterns for transient conditions as well as for steady-state conditions.
Date:
November 1950
Creator:
Taylor, Marion K.
Object Type:
Report
System:
The UNT Digital Library
Bending and buckling of rectangular sandwich plates
"Differential equations and boundary conditions are derived for the bending and buckling of sandwich plates. The buckling load is calculated for a simply supported plate subjected to edgewise compression. The formulas are evaluated numerically and the results are plotted in a diagram" (p. 1).
Date:
November 1950
Creator:
Hoff, N. J.
Object Type:
Report
System:
The UNT Digital Library
The Boundary-Layer and Stalling Characteristics of the NACA 64A010 Airfoil Section
Note presenting a wind-tunnel investigation of the NACA 64A010 airfoil section to determine the boundary-layer and stalling characteristics at low speed. The tests were made at a Reynolds number of 4.1 million and included force measurements, pressure-distribution measurements, flow studies by the liquid-film technique, and boundary-layer measurements.
Date:
November 1950
Creator:
Peterson, Robert F.
Object Type:
Report
System:
The UNT Digital Library
Corrosion of Construction Materials in TBP (HW-3 Flowsheet) Process Streams
Introduction:"A corrosion test program to determine the effect TBP process streams, which contain chlorides, have upon the corrosion resistance of several construction materials, was completed. Data are presented on the performance of Carpenter 20, T-309SCb, T-347. T-316 and tantalum in the RAF and RAW process streams and on the performance of titanium and zirconium in the RAW stream."
Date:
November 1, 1950
Creator:
Koenig, W. W. & Sanborn, K. L.
Object Type:
Report
System:
The UNT Digital Library
Development of Forging Techniques for Uranium
Uranium has been successfully forged using a Lobdell-Nazel forging hammer and a forging temperature range of 500 to 650 degrees centigrade. Using standard forging techniques, the metal readily flowed at the temperature chosen. A noticeable increase in tensile strength, yield strength and percent elongation was obtained in forged metal as compared with cast metal. To obtain complete recrystallization and uniform grain size, a minimum of approximately 75 percent reduction in cross section by forging followed by an anneal within the range of 500 to 600 degrees C is required.
Date:
November 1, 1950
Creator:
Anderson, R. E.; Taub, J. M. & Doll, D. T.
Object Type:
Report
System:
The UNT Digital Library
The dynamic lateral control characteristics of airplane models having unswept wings with round-and sharp-leading-edge sections
Report presenting an investigation in the free-flight tunnel for the purpose of comparing the dynamic lateral control characteristics of airplane models with round- and sharp-leading-edge wing sections. The two dynamic models used in the investigation had different mass characteristics and had different types of inertia. Results regarding the interpretation of flight-test results, high-inertia model, and normal-inertia model are provided.
Date:
November 1950
Creator:
Hassell, James L. & Bennett, Charles V.
Object Type:
Report
System:
The UNT Digital Library
The Effect of End Plates on Swept Wings at Low Speed
Note presenting an investigation made in the 300 mph 7 - by 10-foot tunnel to determine the effects of various sizes and shapes of end plates on the aileron characteristics and on the aerodynamic characteristics in pitch and yaw of a wing of aspect ratio 2 with no taper and a sweepback of 45 degrees and of a wing of aspect ratio 4, taper ratio 0.6, and sweepback of 46.7 degrees. The addition of end plates to the swept wings increased the lift-curve slope, reduced the maximum lift-drag ratio, generally decreased the maximum lift coefficient, and increased the longitudinal stability slightly in the low lift coefficient range.
Date:
November 1950
Creator:
Riebe, John M. & Watson, James M.
Object Type:
Report
System:
The UNT Digital Library
Effects of modifications to the leading-edge region on the stalling characteristics of the NACA 63(sub 1)-012 airfoil section
Report presenting a wind-tunnel investigation of a series of modifications to the leading-edge region of the NACA 63(sub 1)-012 airfoil section to determine the possibilities of delaying the flow separation that occurs near the leading edge of the basic section and improving the stalling characteristics. Results regarding the effect of the leading-edge modifications and effect of leading-edge flap are provided.
Date:
November 1950
Creator:
Kelly, John A.
Object Type:
Report
System:
The UNT Digital Library
Elevator-stabilizer effectiveness and trim of the X-1 airplane to a Mach number of 1.06
Report presenting measurements of elevator-stabilizer effectiveness and trim of the X-1 airplane at 40,000 feet altitude at a range of Mach numbers and normal-force coefficients.
Date:
November 1, 1950
Creator:
Drake, Hubert M. & Carden, John R.
Object Type:
Report
System:
The UNT Digital Library
Engineering Study of Evaporation for Concentrating Radioactive Liquid Wastes : Engineering Research Final Report
Summary: "The problem of evaporation of secondary radioactive wastes resulting from waste disposal studies at Mound Laboratoy has been studied experimentally to determine the fundamental design characteristics of a plant size unit. Emphasis, of course, was on decontamination, but the factors affecting foaming and scaling also had to be investigated and evaluated. Generally speaking, the final design is a standard type of evaporator, the only unique feature being the relation of the two effects. Where critical, as affecting performance, the particular design features have been specified."
Date:
November 1, 1950
Creator:
Bates, R. L. & McEwen, M.
Object Type:
Report
System:
The UNT Digital Library
Final Report : Production Test 105-329-F, Filled Block Graphite Sample Report
This report provides data on production test 105-329-P and solid graphite samples used to analyze damage obtained from controlled natural erosion tests. The data provided will help establish current ideas on the status of filler block graphite and interpretation of the data will assist in establishing pile operating temperature limits based on stored energy.
Date:
November 1, 1950
Creator:
Johnson, P. A.
Object Type:
Report
System:
The UNT Digital Library
Formulas and Tables of Coefficients for Numerical Differentiation With Function Values Given at Unequally Spaced Points and Application to Solution of Partial Differential Equations
Note presenting general differentiation formulas for successive derivative of a function, which are obtained in terms of the values of the function at unequally spaced arguments and the corresponding distances between the successive arguments using Lagrangian polynominals of various degrees. A general discussion of applying the formulas to the numerical solution of partial differential equations is made.
Date:
November 1950
Creator:
Wu, Chung-Hua
Object Type:
Report
System:
The UNT Digital Library
Generalization of Boundary-Layer Momentum-Integral Equations to Three-Dimensional Flows Including Those of Rotating System
"The Navier-Stokes equations of motion and the equation of continuity are transformed so as to apply to an orthogonal curvilinear coordinate system rotating with a uniform angular velocity about an arbitrary axis in space. A usual simplification of these equations as consistent with the accepted boundary-layer theory and an integration of these equations through the boundary layer result in boundary-layer momentum-integral equations for three-dimensional flows that are applicable to either rotating or nonrotating fluid boundaries. These equations are simplified and an approximate solution in closed integral form is obtained for a generalized boundary-layer momentum-loss thickness and flow deflection at the wall in the turbulent case" (p. 1).
Date:
November 1, 1950
Creator:
Mager, Artur
Object Type:
Report
System:
The UNT Digital Library
Graphical Method for Obtaining Flow Field in Two-Dimensional Supersonic Stream to Which Heat Is Added
Report presenting a graphical method for obtaining the two-dimensional supersonic flow with moderate heat addition. The basic equations were derived for flows in which the total temperature has a continuous variation with displacement in the direction of the flow.
Date:
November 1950
Creator:
Pinkel, I. Irving & Serafini, John S.
Object Type:
Report
System:
The UNT Digital Library
Investigation of 75-millimeter-bore cylindrical roller bearings at high speeds 2: lubrication studies - effect of oil-inlet location, angle, and velocity for single-jet lubrication
Report presenting an experimental investigation of the effect of several oil introduction parameters on the temperature of 75-millimeter-bore cylindrical-roller, inner-race-riding cage-type bearings over a range of DN values and static radial loads with single-jet circulating oil feed. Results regarding effect of radial location of oil jet, angle of impingement, effect of jet diameter, power required for oil delivery, and velocity effect are provided.
Date:
November 1950
Creator:
Macks, E. Fred & Nemeth, Zolton N.
Object Type:
Report
System:
The UNT Digital Library
Investigation of Operating Pressure Ratio of a Supersonic Wind Tunnel Utilizing Distributed Boundary-Layer Suction in Test Section
Effect of distributed boundary-layer suction on operating pressure ratio of a supersonic wind tunnel was investigated. Investigation was made in 3.84- by 10-inch supersonic tunnel operating at Mach number 2.0 and suction was applied in neighborhood of the normal shock to two walls of a constant-area extension of test section. A reduction of 4 percent of operating pressure ratio was attributed to improved flow conditions at subsonic-diffuser inlet. The theoretical normal shock was, in practice, replaced by a multiple-branch shock configuration across which the flow parameters changed in approximate accordance with the Rankine-Hugoniot values.
Date:
November 1, 1950
Creator:
Cohen, C. B. & Valerino, A. S.
Object Type:
Report
System:
The UNT Digital Library
Laws of Flow in Rough Pipes
An experimental investigation is made of the turbulent flow of water in pipes with various degrees of relative roughness. The pipes range in size from 25 to 100 millimeters in diameter and from 1800 to 7050 millimeters in length. Flow velocities permitted Reynolds numbers from about 10 (sup. 4) to 10 (sup. 6). The laws of resistance and velocity distributions were obtained as a function of relative roughness and Reynolds number. Mixing length, as described by Prandtl's mixing-length formula, is discussed in relation to the experimental results.
Date:
November 1950
Creator:
Nikuradse, J.
Object Type:
Report
System:
The UNT Digital Library
Multiple-Film Back-Reflection Camera for Atomic Strain Studies
Note presenting the application of a new back-reflection X-ray diffraction technique, which was developed through use of a multiple-film camera containing four parallel films separated by known distances. Diffraction angles were calculated by determining the change in radius of the diffraction ring from film to film. A multiple-film-technique analysis and a conventional-method analysis of the same X-ray strain data indicated that a more detailed analysis of atomic strain could be obtained from the multiple-film technique.
Date:
November 1950
Creator:
Marmo, Anthony B.
Object Type:
Report
System:
The UNT Digital Library
National Annual Diesel-Fuel Survey, 1950
Report issued by the U.S. Bureau of Mines on diesel fuel consumption during the 1950 calendar year. Analysis on 266 samples of diesel fuel and their characteristics are presented. This report includes tables, and a map.
Date:
November 1950
Creator:
Blade, O. C.
Object Type:
Report
System:
The UNT Digital Library
On the Theory of the Propagation of Detonation in Gaseous Systems
"The existing theory of detonation is critically examined. It is shown that the considerations with which the steady value of the velocity of detonation is chosen are not convincing. In connection with the problem of the process of the chemical reaction in a detonation wave, the objections raised against the conceptions of Le Chatelier and Vieille of the 19th century with regard to the ignition of the gas by the shock wave are refuted" (p. 1).
Date:
November 1950
Creator:
Zeldovich, Y. B.
Object Type:
Report
System:
The UNT Digital Library
Reconnaissance Examinations of Copper Uranium Deposits West of the Colorado River
Several relatively small copper-uranium deposits have been found in southwestern Utah along the contact of the Shinarump and Moenkopi formations of Triassic age, at least from the San Rafael Swell area of Emery County, southward through central and eastern Garfield County, southwestward into western Kane County, and westward into the southern part of Washington County.
Date:
November 1950
Creator:
Everhart, Donald L.
Object Type:
Report
System:
The UNT Digital Library
Some Effects of Nonlinear Variation in the Directional-Stability and Damping-in-Yawing Derivatives on the Lateral Stability of an Airplane
Note presenting a theoretical investigation made to determine the effect of nonlinear stability derivatives on the lateral stability of the airplane. The results indicated that under certain conditions, a motion is obtained which has different rates of damping for the large and small amplitudes of motion, with very little damping at the small amplitudes.
Date:
November 1950
Creator:
Sternfield, Leonard
Object Type:
Report
System:
The UNT Digital Library
Stress and distortion analysis of a swept box beam having bulkheads perpendicular to the spars
Report presenting a method for the approximate calculation of the stresses and distortions in a box beam representing the main structural component of a swept wing with a carry-through section and with bulkheads perpendicular to the spars. Results regarding determination of shear-leg effects, effect of bulkhead flexibility, and extension of the method are provided.
Date:
November 1950
Creator:
Heldenfels, Richard R.; Zender, George W. & Libove, Charles
Object Type:
Report
System:
The UNT Digital Library
Supersonic Flow Around Circular Cones at Angles of Attack
Note presenting an analysis of the flow around cones without axial symmetry and moving at supersonic velocity. The results of the analysis are applied to the determination of flow around circular cones at small angles of attack. It is shown that good agreement with experimental results can be obtained from the first-order theory if the complete equation for the pressure distribution is used.
Date:
November 1950
Creator:
Ferri, Antonio
Object Type:
Report
System:
The UNT Digital Library