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35
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22
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287 Matching Results
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Private Signals at Sea, Report
Report of the Committee on Commerce detailing the opinions and recommendations of the Committee on the proposed Senate bill 6958 to provide for private signals at sea. It includes a letter from the Department of Commerce and Labor on the proposed legislation.
Date:
May 7, 1908
Creator:
United States. Congress. Senate. Committee on Commerce.
System:
The UNT Digital Library
Lift, drag, and elevator hinge moments of Handley Page control surfaces
"This report combines the wind tunnel results of tests on four control surface models made in the two wind tunnels of the Navy Aerodynamic Laboratory, Washington Navy Yard, during the years of 1922 and 1924, and submitted for publication to the National Advisory Committee for Aeronautics May 7, 1927. The purpose of the tests was to compare, first, the lifts and the aerodynamic efficiencies of the control surfaces from which their relative effectiveness as tail planes could be determined; then the elevator hinge moments upon which their relative ease of operation depended. The lift and drag forces on the control surface models were obtained for various stabilizer angles and elevator settings in the 8 by 8 foot tunnel by the writer in 1922; the corresponding hinge moments were found in the 4 by 4 foot tunnel by Mr. R. M. Bear in 1924" (p. 429).
Date:
May 7, 1927
Creator:
Smith, R. H.
System:
The UNT Digital Library
Theories of flow similitude
The laws of comparison of dynamically similar fluid motions are derived by three different methods based on the same principle and yielding the same or equivalent formulas. This report outlines the three current methods of comparing dynamically similar motions, more especially of fluids, initiated respectively by Newton, Stokes (or Helmholtz), and Rayleigh. These three methods, viz., the integral, the differential, and the dimensional, are enough alike to be studied profitably together. They are treated in succession then compared. (author).
Date:
May 7, 1928
Creator:
Zahm, A. F.
System:
The UNT Digital Library
The Variation in Engine Power With Altitude Determined From Measurements in Flight With a Hub Dynamometer
"The rate of change in power of aircraft engines with altitude has been the subject of considerable discussion. Only a small amount of data from direct measurements of the power delivered by airplane engines during flight, however, has been published. This report presents the results of direct measurements of the power delivered by a Liberty 12 airplane engine taken with a hub dynamometer at standard altitudes from zero to 13,000 feet. Six flights were made with the engine installed in a modified DH-4 airplane" (p. 323).
Date:
May 7, 1928
Creator:
Gove, W. D.
System:
The UNT Digital Library
Tests in the variable-density wind tunnel of related airfoils having the maximum camber unusually far forward
A family of related airfoils having the position of maximum camber unusually far forward was investigated in the variable-density tunnel as an extension of the study recently completed of a large number of related airfoils. The new airfoils gave improved characteristics over those previously investigated, especially in regard to the pitching moment. Some of the new sections are markedly superior to well-known and commonly used sections and should replace them in applications requiring a slightly cambered section of moderate thickness having a small pitching-moment coefficient.
Date:
May 7, 1935
Creator:
Jacobs, Eastman N. & Pinkerton, Robert M.
System:
The UNT Digital Library
Investigation of the NACA 4-(5)(08)-03 and NACA 4-(10)(08)-03 two-blade propellers at forward Mach numbers to 0.725 to determine the effects of camber and compressibility on performance
As part of a general investigation of propellers at high forward speeds, tests of two-blade propellers having the NACA 4-(5)(08)-03 and NACA 4-(10)(08)-03 blade designs were made in the Langley 8-foot high-speed tunnel through a range of blade angle from 20 degrees to 60 degrees for forward Mach numbers from 0.165 to 0.70 to determine the effect of camber and compressibility on propeller characteristics. Results previously reported for similar tests of a two-blade propeller having the NACA 4-(3)(08)-03 blade design are included for comparison.
Date:
May 7, 1945
Creator:
Delano, James B.
System:
The UNT Digital Library
River water temperature survey
Data acquired from the temperature survey of the Columbia River, April 2, 1945, is presented.
Date:
May 7, 1945
Creator:
Jordan, W. E.
System:
The UNT Digital Library
100-300 Area program meeting of May 7, 1946
None
Date:
May 7, 1946
Creator:
Kidder, C. P.
System:
The UNT Digital Library
Landing Characteristics in Waves of Three Dynamic Models of Flying Boats
Powered models of three different flying boats were landed in oncoming wave of various heights and lengths. The resulting motions and acceleration were recorded to survey the effects of varying the trim at landing, the deceleration after landing, and the size of the waves. One of the models had an unusually long afterbody. The data for landing with normal rates of deceleration indicated that the most severe motions and accelerations were likely to occur at some period of the landing run subsequent to the initial impact.
Date:
May 7, 1947
Creator:
Benson, James M.; Havens, Robert F. & Woodward, David R.
System:
The UNT Digital Library
Test-stand investigation of a rectangular ram-jet engine
Report presenting a test-stand investigation conducted on a rectangular ramjet engine design for installation in an aircraft wing. The engine operated without excessive engine noise or vibration over the entire range of operating conditions. Results regarding inlet velocity, exhaust flame characteristics, fuel-air ratio, and total-temperature rise are provided.
Date:
May 7, 1947
Creator:
Black, Dugald O. & Messing, Wesley E.
System:
The UNT Digital Library
Experimental investigation of the effects of support interference on the drag of bodies of revolution at a Mach number of 1.5
Testing was conducting to evaluate the effects of support interference on the drag characteristics of two bodies of revolution at zero angle of attack at Mach number 1.5. Drag and base-pressure measurements are made for a variety of Reynolds numbers to determine the effect of varying the length or diameter of the rear support.
Date:
May 7, 1948
Creator:
Perkins, Edward W.
System:
The UNT Digital Library
The Fundamental Basis for the Standardization of Electrical Instruments and Meters
Description of the standards used by the electrical power industry for the measurement of the electrical quantities.
Date:
May 7, 1948
Creator:
Silsbee, Francis B.
System:
The UNT Digital Library
Investigation of off-design performance of shock-in-rotor type supersonic blading
An analysis of the off-design performance of shock-in rotor-type supersonic blading is presented. The over-all losses are assumed divided into two groups;normal-shock losses, and external-wave losses. Throughout the range of relative entrance Mach numbers from 1.35 to starting, the largest losses can be attributed to the normal shock. An improvement in performance would be expected with a reduction of the normal-shock losses by the introduction of external compression waves.
Date:
May 7, 1951
Creator:
Graham, Robert C.; Klapproth, John F. & Barina, Frank J.
System:
The UNT Digital Library
Materials Testing Reactor Project Handbook
The following handbook was made for the purpose of: (1) to give a semidetailed description of the testing reactor, and (2) to explain, in so far as possible, the reasons for the design.
Date:
May 7, 1951
Creator:
Argonne National Laboratory
System:
The UNT Digital Library
The Synthetic Liquid Fuel Potential of Maryland
Report documenting the suitability of Maryland for plant locations to produce synthetic liquid fuels, based on raw materials, water sources, and local interest.
Date:
May 7, 1951
Creator:
Ford, Bacon, and Davis
System:
The UNT Digital Library
Werner-Type Uranium Complexes
The following report analyzes the characteristics of eight chelated uranium complexes and seven uranium ammines, prepared from the reaction of organic solutions of uranium salts with complexing agents and organic bases.
Date:
May 7, 1951
Creator:
Barr, John T. & Horton, Charles A.
System:
The UNT Digital Library
Aircraft Nuclear Propulsion Project Quarterly Progress Report for Period Ending March 10, 1952
This quarterly progress discusses the ongoing work at the Oak Ridge National Laboratory for the quarter ending in March 10, 1952. Topics discussed include reactor theory and design, shielding research, materials research, and includes appendixes with supplemental information.
Date:
May 7, 1952
Creator:
Briant, R. C.; Miller, A. J. & Cottrell, William B.
System:
The UNT Digital Library
Geology of Lukachukai Mountains Area, Apache County, Arizona
From introduction: The purpose of this paper is to present the geologic facts which have been discovered thus far about the Lukachukai area and to draw conclusions about uranium mineralization. Basic data of general nature are included to facilitate the work of future geologists in this area who may find the information applicable to new ideas.
Date:
May 7, 1952
Creator:
Masters, John A.
System:
The UNT Digital Library
Propeller Induced Angles of Attack and Section Angles of Attack for the NACA 10-(3)(066)-03, 10-(3)(049)-03, 10-(3)(090)-03, 10-(5)(066)-03, and 10-(0)(066)-03 Propellers
This paper presents the results of an induced angle-of-attack calculation using a method applicable to a propeller with arbitrary circulation distribution. Tables of induced angles of attack and section angles of attack and curves of wake-survey results are presented for the NACA 10-(3)(066)-03, 10-(3)(049)-03, 10-(3)(090)-03, 10-(5)(066)-03, and 10-(0)(066)-03 propellers. A brief description of the method of calculating propeller induced angles of attack is given.
Date:
May 7, 1952
Creator:
Igoe, William B. & Davidson, Robert E.
System:
The UNT Digital Library
Wind-Tunnel Investigation of the Aerodynamic Characteristics of a 0.07-Scale Model of the North American MX-770 Missile
Report presenting the results of an investigation at supersonic speeds to determine the aerodynamic characteristics of a model of the North American MX-770 missile at several designated Mach numbers. No analysis is provided. Information about the longitudinal aerodynamic characteristics with trimmer and elevon deflected and lateral aerodynamic characteristics are described.
Date:
May 7, 1952
Creator:
Pfyl, Frank A.
System:
The UNT Digital Library
Angular Distribution of Fragments from Neutron-Induced Fission
The angular distribution of fission fragments from the neutron-induced fission of several isotopes has been studied. Distributions were observed for thermal neutrons on U233 and U235, Lady Godiva leakage neutrons on U235 and U238, and 14 Mev neutrons on U233, U235, U238, Th232, and Np237. No anisotropy was observed for thermal neutron fission, whereas for Lady Godiva neutrons and 14 Mev neutrons the probability of fission along the axis of the neutron beam was determined to be higher than for fission in the orthogonal direction. Experimental results are given on pages 10 and ll.
Date:
May 7, 1953
Creator:
Brolley, John Edward, 1919- & Dickinson, W. C.
System:
The UNT Digital Library
The effect of lip shape on a nose-inlet installation at Mach numbers from 0 to 1.5 and a method for optimizing engine-inlet combinations
Report presenting an investigation at subsonic, transonic, and supersonic speeds of the effect of lip shape on drag, pressure recovery, and mass flow of a nose-inlet air-induction system. Four lips of varying degrees of bluntness were tested on a fuselage model at a range of Mach numbers and angles of attack. Results regarding pressure recovery, net drag, and analysis are provided.
Date:
May 7, 1954
Creator:
Mossman, Emmet A. & Anderson, Warren E.
System:
The UNT Digital Library
Electroplated Metals on Uranium
The following report follows the studies of electroplating on uranium and concurrent metallurgical clodding.
Date:
May 7, 1954
Creator:
Beach, John G.; Schickner, W. C.; Konecny, C. R. & Faust, Charles L.
System:
The UNT Digital Library
Investigation of the effects of profile shape on the aerodynamic and structural characteristics of thin, two-dimensional airfoils at supersonic speeds
Report presenting testing on 31 airfoils to determine the effects of thickness, trailing-edge bluntness, boattailing, and forward profile on the aerodynamic characteristics of thin airfoils, and to provide a check on available theoretical methods. The airfoils were 2, 4, and 6 percent thick and were tested at two Mach numbers at three Reynolds number in clean condition and one with transition fixed.
Date:
May 7, 1954
Creator:
Katzen, Elliott D.; Kuehn, Donald M. & Hill, William A., Jr.
System:
The UNT Digital Library