Resource Type
Serial/Series Title
NACA Research Memorandums
523
NACA Technical Notes
228
United States Geological Survey Reports
186
Atomic Energy Commission Reports
168
Trace elements investigations report
104
University of California Radiation Laboratory Reports
60
NACA Technical Reports
43
Los Alamos National Laboratory Reports
34
North American Aviation Reports
28
AECU (Series)
27
73 More
States
1,371 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
1,371
next
A Low Cost Experimental Neutron Chain Reactor Part 2
Description of cooling, shielding, controls are discussed for 100 kw and 1 Mw operation of a low cost experimental neutron chain reactor.
Date:
February 5, 1954
Creator:
Abernathy, Fred H.; Barrett, Lawrence G.; Berger, William A.; Dever, John A.; Maurer, John F.; Mesler, Russell B. et al.
Object Type:
Report
System:
The UNT Digital Library
The effect of stick-force gradient and stick gearing on the tracking accuracy of a fighter airplane
Report presenting steady straight-and-level and steady turning tracking runs against an aerial target using an F-51H airplane equipped with a fixed optical sight and with various combinations of maneuvering stick-force and stick-deflection gradients. Results regarding aim wander, elevator movement, and stick-force variation for various test conditions are provided.
Date:
December 17, 1954
Creator:
Abramovitz, Marvin & Van Dyke, Rudolph D., Jr.
Object Type:
Report
System:
The UNT Digital Library
Wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado
Discussing wall-rock control of certain pitchblende deposits in Golden Gate Canyon, Jefferson County, Colorado
Date:
December 1954
Creator:
Adams, John W. & Stugard, Frederick
Object Type:
Report
System:
The UNT Digital Library
Wall-Rock Control of Certain Pitchblende Deposits in Golden Gate Canyon, Jefferson County, Colorado
Report discussing a geological study of the Union Pacific prospect near the Golden Canyon in Jefferson County, Colorado.
Date:
December 1954
Creator:
Adams, John W. & Stugard, Frederick, Jr.
Object Type:
Report
System:
The UNT Digital Library
Experimental Determination of Local and Mean Coefficients of Heat Transfer for Turbulent Flow in Pipes
An extensive investigation of the changes of the local and mean heat-transfer coefficients along the pipe length, and some results.
Date:
February 1954
Creator:
Aladyev, I. T.
Object Type:
Report
System:
The UNT Digital Library
The Effects of Changes in Aspect Ratio and Tail Height on the Longitudinal Stability Characteristics at High Subsonic Speeds of a Model With a Wing Having 32.6 Degree Sweepback
Report discussing an investigation to determine the effects of changes in aspect ratio and tail height on the longitudinal stability characteristics of a model with a 32.6-degree sweptback wing. The effects of a leading-edge discontinuity were also examined.
Date:
February 2, 1954
Creator:
Alford, William J., Jr. & Pasteur, Thomas B., Jr.
Object Type:
Report
System:
The UNT Digital Library
Investigation at high subsonic speeds of finned and unfinned bodies mounted at various locations from the wings of unswept- and swept-wing--fuselage models, including measurements of body loads
Report presenting an investigation to determine the effects of location of bodies (finned and unfinned) on the aerodynamic characteristics of unswept- and swept-wing--fuselage models and to determine the aerodynamic loads on the bodies in the presence of the wings. Results for the complete model characteristics and for the body are provided.
Date:
April 1, 1954
Creator:
Alford, William J., Jr. & Silvers, H. Norman
Object Type:
Report
System:
The UNT Digital Library
Preliminary Low-Speed Wind-Tunnel Investigation of Some Aspects of the Aerodynamic Problems Associated with Missiles Carried Externally in Positions Near Airplane Wings
A low-speed wind-tunnel investigation has been made of some aspects of the aerodynamic problems associated with the use of air-to-air missiles when carried externally on aircraft. Measurements of the forces and moments on a missile model for a range of positions under the mid-semispan location of a 45deg sweptback wing indicated longitudinal and lateral forces with regard to both carriage and release of the missiles. Surveys of the characteristics of the flow field in the region likely to be traversed by the missiles showed abrupt gradients in both flow angularity and in local dynamic pressure. Through the use of aerodynamic data on the isolated missile and the measured flow-field characteristics, the longitudinal forces and moments acting on the missile while in the presence of the wing-fuselage combination could be estimated with fair accuracy. Although the lateral forces and moments predicted were qualitatively correct, there existed some large discrepancies in absolute magnitude.
Date:
December 27, 1954
Creator:
Alford, William J., Jr.; Silvers, H. Norman & King, Thomas J., Jr.
Object Type:
Report
System:
The UNT Digital Library
Pumping Characteristics for Several Simulated Variable-Geometry Ejectors With Hot and Cold Primary Flow
Report presenting an investigation of the pumping characteristics of eight conical ejectors mounted on a fuselage portion of a supersonic airplane. The diameter ratio, spacing ratio, nozzle pressure, and ejector weight flows were varied. Results regarding the ejector pumping characteristics, comparison with previous results, comparison of data for cold and hot primary flow, and ejector air-supply requirements are provided.
Date:
September 8, 1954
Creator:
Allen, John L.
Object Type:
Report
System:
The UNT Digital Library
Pumping Characteristics for Several Simulated Variablegeometry Ejectors With Hot and Cold Primary Flow
Report presenting an investigation of the pumping characteristics of eight conical ejectors mounted on a scale fuselage portion of a supersonic airplane. The configurations simulated various positions of a two-position nozzle with a fixed shroud and double-iris exit. Results regarding ejector pumping characteristics, comparison with previous results, comparison of data for cold and hot primary flow, and ejector air-supply requirements are provided.
Date:
September 8, 1954
Creator:
Allen, John L.
Object Type:
Report
System:
The UNT Digital Library
Measurement and Calculation of Blade Torsional Deflection of Three Supersonic-Type Propellers
Report presenting an investigation to determine the blade torsional deflection of three supersonic-type propellers at various operating conditions. Blade-torsional deflection was found to produce appreciable results that can be predicted by theory with good accuracy. Results regarding the efficiency, thrust coefficient, and power coefficient are provided.
Date:
May 28, 1954
Creator:
Allis, Arthur E. & Foss, Willard E., Jr.
Object Type:
Report
System:
The UNT Digital Library
Study of Some Dielectric Properties of Suspensions of Magnesium Particles in Mineral Oil
The variation of dielectric constant has been measured as a function of the concentration of magnesium particles; the shape, size, and degree of oxidation of the particles; the temperature; and the frequency of oscillation. The variation of dielectric constant and settling rate was investigated as a function of time. Also investigated were the effects of particle concentration, shape and time on dielectric losses.
Date:
February 19, 1954
Creator:
Altshuller, Aubrey P.
Object Type:
Report
System:
The UNT Digital Library
Studies of the lateral-directional flying qualities of a tandem helicopter in forward flight
An investigation of the lateral-directional flying qualities of a tandem-rotor helicopter in forward flight was undertaken to determine desirable goals for helicopter lateral-directional flying qualities and possible methods of achieving these goals in the tandem-rotor helicopter. Comparison between directional stability as measured in flight and rotor-off model tests in a wind tunnel shows qualitative agreement and, hence, indicates such wind-tunnel test, despite the absence of the rotors, to be one effective method of studying means of improving the directional stability of the tandem helicopter. Flight-test measurements of turns and oscillations, in conjunction with analytical studies, suggest possible practical methods of achieving the goals of satisfactory turn and oscillatory characteristics in the tandem helicopter.
Date:
1954
Creator:
Amer, Kenneth B. & Tapscott, Robert J.
Object Type:
Report
System:
The UNT Digital Library
Bibliography of the Fischer-Tropsch Synthesis and Related Processes: (In Two Parts) I. Review and Compilation of the Literature on the Production of Synthetic Liquid Fuels and Chemicals by the Hydrogenation of Carbon Monoxide
Report containing abstracts of the technical literature and patents dealing with the history, development, and commercial application of the Fischer-Tropsch synthesis and related processes for the hydrogenation of carbon monoxide and the production of synthetic fuels and chemicals.
Date:
1954
Creator:
Anderson, H. C.; Wiley, J. L. & Newell, A.
Object Type:
Report
System:
The UNT Digital Library
Bibliography of the Fischer-Tropsch Synthesis and Related Processes (In Two Parts): [Part] 1. Review and Compilation of the Literature on the Production of Synthetic Liquid Fuels and Chemicals by the Hydrogenation of Carbon Monoxide
Report issued by the Bureau of Mines over the Fischer-Tropsch synthesis of liquid fuels. As stated in the introduction, "this review contains abstracts of the technical literature and patents dealing with the history, development, and commercial application of the Fischer-Tropsch synthesis and related processes for the hydrogenation of carbon monoxide and the production of synthetic fuels and chemicals" (p. v).
Date:
1954
Creator:
Anderson, Hazel C.; Wiley, J. L. & Newell, A.
Object Type:
Report
System:
The UNT Digital Library
Charts Relating the Compressive Buckling Stress of Longitudinally Supported Plates to the Effective Deflectional and Rotational Stiffness of the Supports
"A stability analysis is made of a long flat rectangular plate subjected to a uniform longitudinal compressive stress and supported along its longitudinal edges and along one or more longitudinal lines by elastic line supports. The elastic supports possess deflectional and rotational stiffness. Such configuration is an idealization of the compression cover skin and internal structure of a wing and tail surfaces" (p. 1).
Date:
1954
Creator:
Anderson, Roger A. & Semonian, Joseph W.
Object Type:
Report
System:
The UNT Digital Library
Design Data for Multipost-Stiffened Wings in Bending
From Summary: "The results of a computational program are presented which give numerical values of the stiffnesses required of the various components of a multipost-stiffened wing to achieve desired buckling-stress values under bending loads. Two arrangements of the posts are considered, upright posts and posts used as diagonals of a Warren truss. This work extends and summarizes the calculations presented in NACA RM L52K10a."
Date:
January 1954
Creator:
Anderson, Roger A.; Johnson, Aldie E., Jr. & Wilder, Thomas W., III
Object Type:
Report
System:
The UNT Digital Library
Investigation of a Flow Deflector and an Auxiliary Scoop for Improving Off-Design Performance of Nose Inlets
Memorandum presenting an investigation of flow deflectors which extend forward of an open-nose inlet for improving positive angle-of-attack performance and auxiliary scoops for use at off-design engine air-flow conditions at low angles of attack to determine their effect on net inlet performance. The results show that a deflector inlet and a basic open-nose inlet have about the same net performance at low angles of attack although the flow steadiness characteristics of the deflector inlet are the less desirable.
Date:
July 20, 1954
Creator:
Anderson, Warren E. & Scherrer, Richard
Object Type:
Report
System:
The UNT Digital Library
Comparison of performance of experimental and conventional cage designs and materials for 75-millimeter-bore cylindrical roller bearings at high speed
From Summary: "The results of two investigations, one to determine the relative merits of four experimental and two conventional design 75-millimeter-bore (size 215) cylindrical roller bearings and one to determine the relative merits of nodular iron and bronze as cage materials for this size and type of bearing, are presented in this report. Nine test bearings were operated over a range of dn values (product of bearing bore in mm and shaft speed in r.p.m) from 0.3 x 10(6) to 2.3 x 20(6), radial loads for 7 to 1613 pounds, and oil flows from 2 to 8 pounds per minute with a single-jet circulatory oil feed. Of the six bearings used to evaluate designs, four were experimental types with outer-race-riding cages and inner-race-guided rollers, and two were conventional types, one with outer-race-guided rollers and cage and one with inner-race-guided rollers and cage."
Date:
June 30, 1954
Creator:
Anderson, William J.; Macks, E. Fred & Nemeth, Zolton N.
Object Type:
Report
System:
The UNT Digital Library
Determination of Longitudinal Stability in Supersonic Accelerated Maneuvers for the Douglas D-558-II Research Airplane
Report discussing testing of a Douglas D-558-II to investigate its longitudinal stability characteristics in accelerated flight at supersonic speeds. Information about the normal-force coefficients and their relation to stability and pitch-up of the aircraft is included.
Date:
February 17, 1954
Creator:
Ankenbruck, Herman O.
Object Type:
Report
System:
The UNT Digital Library
Lateral Motions Encountered with the Douglas D-558-II All-Rocket Research Airplane During Exploratory Flights to a Mach Number of 2.0
Memorandum presenting flight tests performed with the Douglas D-558-II research airplane in order to determine the lateral handling characteristics in straight flight at supersonic speeds. It primarily describes the lateral motions obtained at moderate and low angles of attack during a preliminary survey in pushovers and straight flight at supersonic Mach numbers up to about 2.0 at altitudes between 50,000 and 70,000 feet.
Date:
December 17, 1954
Creator:
Ankenbruck, Herman O. & Wolowicz, Chester H.
Object Type:
Report
System:
The UNT Digital Library
Distribution of Thermal Neutrons from Fast Sources in Exponential Piles
Report regarding the mathematical analysis of the exponential pile experiment using highly absorbent slugs and assuming the emitting of fast neutrons. Related theory and equations are discussed.
Date:
May 27, 1954
Creator:
Anselone, Philip M.
Object Type:
Report
System:
The UNT Digital Library
Summary of rocket-model tests at zero lift of an arrow-wing missile configuration from Mach numbers of 0.9 to 1.8
Report presenting flight tests conducted between Mach numbers of 0.9 to 1.8 over a range of Reynolds numbers to determine the zero-lift drag and some rolling-effectiveness characteristics of a proposed long-range, supersonic, ground-to-ground missile. Results regarding the longitudinal trim, drag, rolling effectiveness, and instability due to roll are provided.
Date:
January 14, 1954
Creator:
Arbic, Richard G. & Gillespie, Warren, Jr.
Object Type:
Report
System:
The UNT Digital Library
Summary of Meteorological Data Taken at Argonne National Laboratory, Du Page County, Illinois, July 1952 Through June 1953
Report issued by the Argonne National Laboratory discussing meteorological data collected between 1952 and 1953. Wind, temperature, pressure, and precipitation studies are presented. This report includes tables, illustrations, and a map.
Date:
April 1954
Creator:
Argonne National Laboratory
Object Type:
Report
System:
The UNT Digital Library