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98
National Advisory Committee for Aeronautics Collection
54
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31
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22
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5
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3
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1
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1
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34
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21
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11
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10
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4
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138 Matching Results
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Aerodynamic Characteristics of Four Bodies of Revolution Showing Some Effects of Afterbody Shape and Fineness Ratio at Free-Stream Mach Numbers From 1.50 to 1.99
The effects of fineness ratio (14.2 and 12.2) and boattailing on aerodynamic characteristics of four bodies of revolution at Mach numbers from 1.50 to 1.99 within a range of angles of attack from 0 degrees 10 degrees at an approximate Reynolds number of 35x10(superscript)6 based on body length were investigated. A comparison of experimental data with available theory is included. At zero angle of attack, fineness ratio has no appreciable effect on model characteristics while boattailing and boattail convergence significantly affect fore drag and base drag.
Date:
May 22, 1951
Creator:
Cohen, Robert J.
Object Type:
Report
System:
The UNT Digital Library
Aerodynamic Characteristics of Wings Designed for Structural Improvement
From Wing Thickness: "A brief review of the effect of wing thickness and thickness distribution on the high-speed performance and stability characteristics of a representative configuration is presented."
Date:
May 28, 1951
Creator:
Weil, Joseph & Polhamus, Edward C.
Object Type:
Report
System:
The UNT Digital Library
Altitude-performance and Reynolds number investigation of centrifugal-flow-compressor turbojet engine
From Introduction: "Altitude-chamber and wind-tunnel investigations of the performance of turbojet engines such as those reported in references 1 to 4 have shown that the conventional correction factors fail to generalize the engine performance variables at high altitudes. An investigation was therefore made at the NACA Lewis laboratory to determine the altitude performance of the J33-A-23 turbojet engine and to demonstrate the magnitude of departure of actual altitude performance from that predicted from sea-level performance."
Date:
May 15, 1951
Creator:
Wilsted, H. D. & Grey, R. E.
Object Type:
Report
System:
The UNT Digital Library
Analyses required for the slag and crucible recovery program
This summary from the analytical research section, May 1, 1951, briefly describes the analytical method to be utilized in the recovery of plutonium from crucibles program.
Date:
May 1, 1951
Creator:
Groot, C. & Hill, O.F.
Object Type:
Report
System:
The UNT Digital Library
An analysis of base pressure at supersonic velocities and comparison with experiment
From Introduction: "The primary purpose of the investigation described in the present described in the present report is to formulate a method which is of value for qualitative calculations of base pressure both on airfoils and bodies."
Date:
May 11, 1951
Creator:
Chapman, Dean R.
Object Type:
Report
System:
The UNT Digital Library
Analysis of experimental sea-level transient data and analog method of obtaining altitude response for turbine-propeller engine with relay-type speed control
From Introduction: "This report shows correlation between actual transient data obtained from the engine and solutions to a simulated system set up on an analog computer. Data are presented for response of engine speed to changes in set speed when the power plant was being controlled by a relay-type electronic governor that acted to maintain set speed by varying propeller pitch. Correlation obtained for sea-level conditions between actual time data and analog solutions is discussed."
Date:
May 17, 1951
Creator:
Vasu, George & Pack, George J.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Heat Transfer, Burnout, Pressure Drop and Density Date for High Pressure Water
This report is the descriptive summary Analysis of Heat Transfer, Burnout, Pressure Drop and Density Date for High Pressure Water.
Date:
May 1, 1951
Creator:
Jens, W. H. & Lottes, P. A.
Object Type:
Report
System:
The UNT Digital Library
Analytical Evaluation of Aerodynamic Characteristics of Turbines With Nontwisted Rotor Blades
From Introduction: "The purpose the present report is to investigate the aerodynamic characteristics of nontwisted-rotor-blade turbines and to evaluate the characteristics of this type of design by comparison with the characteristics of free-vortex designs."
Date:
May 1951
Creator:
Slivka, William R. & Silvern, David H.
Object Type:
Report
System:
The UNT Digital Library
Aqueous Homogeneous Reactors for Producing Central-Station Power
Report issued by the Oak Ridge National Laboratory discussing aqueous homogeneous reactors used in central-station power. As stated in the introduction, "it contains an evaluation of the potentiality of producing power only, as exhibited by aqueous homogeneous systems" (p. 6). This report includes tables, and illustrations.
Date:
May 25, 1951
Creator:
Briggs, R. B.; Haubenreich, P. N.; Sanders, J. P.; Aven, R. E.; Zapp, F. C.; Segaser, C. L. et al.
Object Type:
Report
System:
The UNT Digital Library
The Average Fission Cross Section of U$sup 233$, U$sup 234$, and U$sub 236$ in the Fast Cross Section of U$sup 236$ in the Fast Reactor Neutron Spectrum
None
Date:
May 18, 1951
Creator:
Jurney, E.
Object Type:
Report
System:
The UNT Digital Library
The Behavior of Graphite Under Alternating Stress
This report is based on studies conducted for the Atomic Energy Commission.
Date:
May 1, 1951
Creator:
Green, L.
Object Type:
Report
System:
The UNT Digital Library
Beryllium Deposits of the Mount Antero Region, Chaffee County, Colorado
Report discussing the possible existence of pegmatites containing beryllium deposits in the granite stock in the vicinity of Mount Antero and White Mountain, Chaffee County, Colorado.
Date:
May 1951
Creator:
Adams, John W.
Object Type:
Report
System:
The UNT Digital Library
A biharmonic relaxation method for calculating thermal stress in cooled irregular cylinders
A numerical method was developed for calculating thermal stresses in irregular cylinders cooled by one or more internal passages. The use of relaxation methods and elementary methods of finite differences was found to give approximations to the correct values when compared with previously known solutions for concentric circular cylinders possessing symmetrical and asymmetrical temperature distributions.
Date:
May 10, 1951
Creator:
Holms, Arthur G.
Object Type:
Report
System:
The UNT Digital Library
Border Irrigation.
Provides instructions for implementing a border irrigation system for watering crops.
Date:
May 1951
Creator:
Core, Edwin J.
Object Type:
Book
System:
The UNT Digital Library
Charts and tables for use in calculations of downwash of wings of arbitrary plan form
From Summary: "Values of the downwash of a horseshoe vortex in compressible flow are presented in the form of charts and tables. The use of the charts and tables in the calculations of the downwash of wings of arbitrary plan form is discussed. The results of a few calculations are compared with experimental results."
Date:
May 1951
Creator:
Diederich, Franklin W.
Object Type:
Report
System:
The UNT Digital Library
Chemistry Division Quarterly Progress Report for Period Ending March 31, 1951
Quarterly technical report including reports on chemistry of source, fissionable, and structural elements, nuclear chemistry, radio-organic chemistry, chemistry of separations processes, chemical physics, radiation chemistry, and instrumentation. [From Abstract]
Date:
May 10, 1951
Creator:
Lind, S. C.; Boyd, G. E. & Bredig, M. A.
Object Type:
Report
System:
The UNT Digital Library
Combustion performance evaluation of magnesium-hydrocarbon slurry blends in a simulated tail-pipe burner
Report presenting an experimental investigation to determine the combustion properties of several magnesium-hydrocarbon slurry blends and to indicate the feasibility of the application of slurry-type fuels to high-speed aircraft. High-concentration magnesium slurries showed large improvements in combustion stability and tail-pipe-burner net thrust.
Date:
May 15, 1951
Creator:
Tower, Leonard K. & Branstetter, J. Robert
Object Type:
Report
System:
The UNT Digital Library
A comparison of the experimental and theoretical loading over triangular wings in sideslip at supersonic speeds
The results of an experimental investigation of the load distribution over two triangular wings in sideslip at Mach numbers from 1.20 to 1.79 are presented and compared with theory. The two wings tested have identical plan form, 45 degrees sweepback of the leading edge, and an aspect ratio of 4.0. One model was composed of round-nose airfoil sections and the other of sharp-nose, biconvex sections. For both wings the maximum thickness of streamwise sections was 6 percent and was located at the 30-percent chord.
Date:
May 18, 1951
Creator:
Boyd, John W.
Object Type:
Report
System:
The UNT Digital Library
A Comparison of Two Techniques Utilizing Rocket-Propelled Vehicles for the Determination of the Damping-in-Roll Derivative
Report presenting rocket-powered flight investigations for the purpose of comparing damping-in-roll results obtained from a torque-nozzle technique. Results regarding basic aerodynamic quantities, data from the torque-nozzle technique, wing-dropping phenomenon, and comparison of the values of the two techniques are provided.
Date:
May 3, 1951
Creator:
Stone, David G. & Sandahl, Carl A.
Object Type:
Report
System:
The UNT Digital Library
Comparison of Zero-Lift Drags Determined by Flight Tests at Transonic Speeds of Symmetrically Mounted Nacelles in Various Spanwise Positions on a 45 Degrees Sweptback Wing and Body Combination
Report presenting testing of rocket-powered models flown at transonic speeds to determine the effect of nacelle location on zero-lift drag. Low drag was obtained between M = 0.80 and M = 0.91 for all the nacelle positions investigated. Nacelles located at the wing tips gave the lowest drag, which was less than the drag of the combination without the nacelles over most of the speed range.
Date:
May 23, 1951
Creator:
Pepper, William B., Jr. & Hoffman, Sherwood
Object Type:
Report
System:
The UNT Digital Library
Compressor Performance Characteristics of a Python Turbine-Propeller Engine Investigated in Altitude Wind Tunnel
Report presenting an investigation in the altitude wind tunnel to determine the performance of the Python turbine-propeller engine. Compressor-performance data were obtained for a range of simulated altitudes at a single cowl-inlet ram pressure ratio while the engine was run over its full operable range of engine speeds. Results regarding the deterioration of compressor performance, compressor performance, including efficiency and performance maps, and velocity and static-pressure profiles are provided.
Date:
May 1, 1951
Creator:
Jansen, Emmert T. & McAulay, John E.
Object Type:
Report
System:
The UNT Digital Library
Correlation of cleanout and estimated product hold-up data - N-1 Nutsches
Data is presented from the separations technology division, May 14, 1951, to compare plutonium recovery from leaches of N-1 to corresponding hold-up data of plutonium.
Date:
May 14, 1951
Creator:
Healy, W.C.
Object Type:
Report
System:
The UNT Digital Library
Corrosion Data for Type 347 Stainless Steel Pipe Waste Metal Recovery Process
Introduction: "A limited test progress for the evaluation of type 347 stainless steel pipe which failed the Huey (?) test has been complicated. The tests reported herein were similar in scope to those reported in document number EW-20765, Corrosion Tests on Stainless Steel Plate, Waste Metal Recovery Process. Material tested was obtained on order number EWC-8553, National Tube Company Heat #3X9741. Lots 9789 and 9790."
Date:
May 22, 1951
Creator:
Sanborn, Kenneth L.
Object Type:
Report
System:
The UNT Digital Library
Corrosion Newsletter No. 3
None
Date:
May 29, 1951
Creator:
English, J. L.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library