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Analysis of Heat and Compressibility Effects in Internal Flow Systems and High-Speed Tests of a Ram-Jet System
Report discussing an analysis has been made by the NACA of the effects of heat and compressibility in the flow through the internal systems of aircraft along with equations and charts are developed whereby the flow characteristics at key stations in a typical internal system may be readily obtained.
Date:
July 21, 1942
Creator:
Becker, John V. & Baals, Donald D.
System:
The UNT Digital Library
Bibliography of NACA Papers on Rotating-Wing Aircraft, July 1948
"A bibliography of NACA papers on rotating-wing aircraft issued up to July 1948 is presented. The list of papers is subdivided for ready reference under appropriate subject headings, and the titles are listed chronologically within each subject" (p. 1).
Date:
July 21, 1948
Creator:
Gessow, Alfred
System:
The UNT Digital Library
Effect of a nacelle on the low-speed aerodynamic characteristics of a swept-back wing
Wind-tunnel tests of a simplified nacelle on a semispan wing having approximately 35 degrees of sweepback were made at low speeds to evaluate the effects of the nacelle on the aerodynamic characteristics of the wing. Force, moment, and pressure-distribution measurements are presented for the nacelle underslung and centrally mounted on the wing and mounted on a strut below the wing.
Date:
July 21, 1948
Creator:
Hanson, Frederick H., Jr. & Dannenberg, Robert E.
System:
The UNT Digital Library
Free-Flight Investigation at Transonic and Supersonic Speeds of a Wing-Aileron Configuration Simulating the D-558-2 Airplane
"An investigation of the rolling effectiveness at transonic and supersonic speeds of a wing-aileron configuration simulating the D-558-2 airplane has been made by means of a rocket-propelled test vehicle. The variation of rolling effectiveness with Mach number is similar to that obtained previously for tapered sweptback wings having full-span, 0.2-chord ailerons" (p. 1).
Date:
July 21, 1948
Creator:
Sandahl, Carl A.
System:
The UNT Digital Library
An investigation at low speed of a 51.3 degrees sweptback semispan wing with a raked tip and with 16.7-percent-chord ailerons having three spans and three trailing-edge angles
Report presenting a wind-tunnel investigation at low speed to determine the aerodynamic characteristics of a 51.3 degree sweptback semispan wing with a raked tip and with 16.7-percent-chord sealed plain ailerons. Lift, drag, pitching-moment, and hinge-moment data were obtained for the wing with transition free and fixed with various spans of aileron deflected as lift flaps. The rolling moment, yawing moment, hinge moment, and aileron seal pressure characteristics were determined for each of the nine possible aileron-span and trailing-edge-angle combinations tested.
Date:
July 21, 1948
Creator:
Fischel, Jack & Schneiter, Leslie E.
System:
The UNT Digital Library
Measurement Through the Speed of Sound of Static Pressures on the Rear of Unswept and Sweptback Circular Cylinders and on the Rear and Sides of a Wedge by the NACA Wing-Flow Method
Report presenting static-pressure measurements made through the speed of sound by the NACA wing-flow method at the back of two unswept circular cylinders and one sweptback cylinder. Static pressures were found to decrease considerably with an increase in Mach number. Information about the length and diameter of the cylinders and how it affects measurements is provided.
Date:
July 21, 1948
Creator:
Sawyer, Richard H. & Daum, Fred L.
System:
The UNT Digital Library
Study of stress states in gas-turbine disk as determined from measured operating-temperature distributions
Report presenting results of an experimental investigation to determine the temperature distribution in an aircraft-engine gas-turbine disk. Calculated stresses based on the measured temperature distributions are presented. Results regarding stresses in the inner region of the disk and stresses in the rim of the disk are provided.
Date:
July 21, 1948
Creator:
Farmer, J. Elmo; Millenson, M. B. & Manson, S. S.
System:
The UNT Digital Library
The Path of Carbon in Photosynthesis VII Respiration andPhotosynthesis
The relationship of respiration to photosynthesis in barley seedling leaves and the algae, Chlorella and Scenedesmus, has been investigated using radioactive carbon dioxide and the techniques of paper chromatography and radioautography. The plants are allowed to photosynthesize normally for thirty seconds in c{sup 14}O{sub 2} after which they are allowed to respire in air or helium in the light or dark. Respiration of photosynthetic intermediates as evidenced by the appearance of labeled glutomic, isocitric, fumaric and succinic acids is slower in the light than in the dark. Labeled glycolic acid is observed in barley and algae. It disappears rapidly in the dark and is maintained and increased in quantity in the light in C0{sub 2}-free air.
Date:
July 21, 1949
Creator:
Benson, A. A. & Calvin, M.
System:
The UNT Digital Library
Aerodynamic characteristics of NACA RM-10 missile in 8- by 6-foot supersonic wind tunnel at Mach numbers from 1.49 to 1.98 2: presentation and analysis of force measurements
Experimental investigation of aerodynamic forces acting on body of revolution (NACA RM-10 missile) with and without stabilizing fins was conducted at Mach numbers from 1.49 to 1.98 at angles of attack from 0 to 9 degrees and at Reynolds number of approximately 30,000,000. Comparison of experimental lift, drag, and pitching-moment coefficients and center of pressure location for body alone is made with linearized potential theory and a semiempirical method. Results indicate that aerodynamic characteristics were predicted more accurately by semiempirical method than by potential theory. Breakdown of measured drag coefficients into components of friction, pressure, and base-pressure drag is presented for body alone at zero angle of attack.
Date:
July 21, 1950
Creator:
Esenwein, Fred T.; Obery, Leonard J. & Schueller, Carl F.
System:
The UNT Digital Library
Monthly Divisional Information Meeting : Isotope Research and Production Division, Y-12
The following report contains papers summarizing the activities of the various sections comprising the Isotope Research and Production Division of Y-12.
Date:
July 21, 1950
Creator:
Carbide and Carbon Chemicals Corporation
System:
The UNT Digital Library
Some Effects of Chordwise Fences on the Aerodynamic Characteristics of Four Moderately Sweptback Wings in the Low-Lift Range at Transonic Mach Numbers and at Mach Number 1.9
Report presenting a study of data from wind-tunnel investigations to determine the effects of thin chordwise fences on some of the aerodynamic characteristics of four moderately sweptback wings at a low-lift range. The fences caused no large detrimental effects on lift or pitching moment at transonic or supersonic speeds. Results regarding the increment of drag coefficient due to fences, effect of fences on the lift coefficient and longitudinal stability, and effects on aileron effectiveness are provided.
Date:
July 21, 1950
Creator:
Guy, Lawrence D.
System:
The UNT Digital Library
Terminal report on the Radiolanthanum Laboratory
A report which intends to acquaint the reader with the planning of the radiochemical laboratory designed for the analytical control of the radiolanthanum process and to define the terminal status of the design of this laboratory and its equipment.
Date:
July 21, 1950
Creator:
Figenshau, J. K.
System:
The UNT Digital Library
Terminal Report on the Radiolanthanum Laboratory
"The purpose of this present document is twofold: (1) To acquaint the reader with the planning of the radiochemical laboratory designed for the analytical control of the Radio-lanthanum Process. (2) To define the terminal status of the design of this laboratory and its equipment."
Date:
July 21, 1950
Creator:
Figenshau, J. K.
System:
The UNT Digital Library
The Effects of Internal Conversion on Critical Mass and Operating Life of a Thermal Reactor
"This report was prepared for preliminary use only in the course of work under W31-109 Eng. 52, and the information contained herein may not be correct or in agreement with more recent experimental and operating data. Any values or opinions expressed in the report may only be those of the author, and the General Electric Company makes no representation or warranty (1) as to the value of this report for any purpose or (2) that any use of the report will not infringe the rights of others."
Date:
July 21, 1952
Creator:
Snyder, T. M.
System:
The UNT Digital Library
Examination of Discharged Process Tubes
Introduction: "The observations reported in this document were obtained by C.H. Pitt during his assignment to the Corrosion Group September through October 1951. The tubes examined were: 1.) 0893-F Discharged for corrosion examination after leaking; 2.) 1488-DR Discharged to determine caused of obstruction; 3.) 2276-D Discharged for corrosion examination; 4.) 2376-D Discharged for corrosion examination; 5.) 1185-H Discharged to evaluate the effect of magnesium front dummies."
Date:
July 21, 1952
Creator:
Dalrymple, R. S.
System:
The UNT Digital Library
Pressure Distributions on Bodies of Revolution at Subsonic and Transonic Speeds
Report presenting pressure distributions measured along prolate spheroids of fineness ratios 3 to 20 and along a slender body of fineness ratio 12 are compared at subsonic and transonic speeds and several angles of attack. The experimental results, prediction of incompressible pressure distribution along the 0 degree and 180 degree meridians, prediction of subsonic pressure distribution along the meridians, prediction of subsonic pressure distributions around prolate spheroids, effect of fineness ratio and angle of attack on separation, and prediction of transonic pressure distribution.
Date:
July 21, 1952
Creator:
Cole, Richard I.
System:
The UNT Digital Library
Reflection of shock waves from slotted walls at Mach number 1.62
"A brief study was made of the effects of slots in a test-section wall on the reflection from the wall of an incident oblique shock wave at a free-stream Mach number of 1.62. The reflection was observed with an interferometer for various combinations of slot width, spacing, and contour. The reflections from the open and the closed portions of the wall, being at different angles to the wall, were not superimposed and, therefore, did not cancel each other" (p. 1).
Date:
July 21, 1952
Creator:
Wood, George P.
System:
The UNT Digital Library
THE THERMODYNAMICS OF THE REDUCTION OF URANIUM COMPOUNDS TO URANIUM METAL
None
Date:
July 21, 1952
Creator:
Lemmon, A.W.; Ward, J.J.; Fischer, S.M.; Geankoplis, C.J. & Clegg, J.W.
System:
The UNT Digital Library
A program for testing raw Columbia River water as a pile coolant
The potentialities of unfiltered Columbia River water as a pile coolant have been discussed in a recent survey of the available information on the subject. The survey report points out the gains which the use of unfiltered water offers, and proposes a logical framework of treatment by chemical additives which appears to have a reasonable probability of successfully developing a far less expensive pile coolant. A comprehensive testing program is now being initiated to obtain the required experimental information concerning the effects of unfiltered water on corrosion, film formation, and effluent activity. The purpose of this report is to outline the range of variables to be studied; to discuss the various experimental techniques to be used; and to establish the anticipated scheduling of the several phases of the program.
Date:
July 21, 1953
Creator:
Atwood, J. M.
System:
The UNT Digital Library
Water Adsorbed by Graphite at Various Relative Pressures
Summary: "The quantity of water adsorbed by graphite at various relative pressures has been determined and the data are presented in graphical and tabular form."
Date:
July 21, 1953
Creator:
Spalaris, C. N.
System:
The UNT Digital Library
Investigation of a 1/4-Scale Model of the Republic F-105 Airplane in the Langley 19-Foot Pressure Tunnel: Longitudinal Stability and Control of the Model Equipped with a Supersonic-Type Elliptical Wing-Root Inlet
Memorandum presenting development tests on a 1/4-scale model of the Republic F-105 airplane in the 19-foot pressure tunnel. The tests in this particular report include longitudinal stability and control tests of the basic design provided by the contractor, tests of various modifications designed to improve the stability characteristics of the model with the trailing-edge flaps deflected, brief exploratory lateral-control and rudder-effectiveness tests, and stall studies and duct air-flow measurements.
Date:
July 21, 1954
Creator:
Kelly, H. Neale & Cancro, Patrick A.
System:
The UNT Digital Library
A Proposed Fuel Element
None
Date:
July 21, 1954
Creator:
Daane, Robert
System:
The UNT Digital Library
Table Top 1 Circuitry
Abstract: "This is a detailed report on the circuitry, the electrical components, and the electrical engineering problems of Table Top I, the 140-kilojoule experimental model of a magnetic mirror machine being developed at the University of California Radiation Laboratory, Livermore."
Date:
July 21, 1954
Creator:
Cummings, David B. & Wharton, Charles B.
System:
The UNT Digital Library
Buckling of an Elliptic Cylinder First Roots of the Zero Order, Modified Mathieu Function
This paper presents values of the constant B², commonly called the buckling, when 0 vanishes on the surface of a right elliptic cylinder.
Date:
July 21, 1955
Creator:
Gast, Paul F. & Bournis, Anthony
System:
The UNT Digital Library