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Comparison of hecter fuel with export aviation gasoline

Description: Among the fuels which will operate at compression ratios up to at least 8.0 without preignition or "pinking" is hecter fuel, whence a careful determination of its performance is of importance. For the test data presented in this report the hecter fuel used was a mixture of 30 per cent benzol and 70 per cent cyclohexane, having a low freezing point, and distilling from first drop to 90 per cent at nearly a constant temperature, about 20 degrees c. below the average distillation temperature ("mea… more
Date: January 29, 1920
Creator: Dickinson, H. C.; Gage, V. R. & Sparrow, S. W.
Partner: UNT Libraries Government Documents Department
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Effect of body nose shape on the propulsive efficiency of a propeller

Description: Report presents the results of an investigation of the propulsive efficiency of three adjustable propellers of 10-foot diameter operated in front of four body nose shapes, varying from streamline nose that continued through the propeller plane in the form of a large spinner to a conventional open-nose radial-engine cowling. One propeller had airfoil sections close to the hub, the second had conventional round blade shanks, and the third differed from the second only in pitch distribution. The b… more
Date: January 29, 1940
Creator: Stickle, George W.; Crigler, John L. & Naiman, Irven
Partner: UNT Libraries Government Documents Department
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FILM FORMATION IN "W" ANNULUS

Description: No Description Available.
Date: January 29, 1945
Creator: Larson, R E & Szulinski, M J
Partner: UNT Libraries Government Documents Department
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Measurement of Individual Aileron Hinge Moments and Aileron Control Characteristics of a P-40F Airplane

Description: "Flight measurements have been made of the individual aileron hinge moments, aileron rolling effectiveness pb/2V ,and stick-force characteristics in abrupt aileron rolls with a P-40F airplane (AAF No. 41-14119) over an indicated airspeed range from 108 to 304 miles per hour. Three methods for measuring the rate of change of hinge moment with angle of attack were investigated. Presented for comparison with the flight results are data from two-dimensional wind-tunnel tests of the wing-aileron pro… more
Date: January 29, 1945
Creator: Goranson, R. Fabian
Partner: UNT Libraries Government Documents Department
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Alpha Particle Detection and the A. C. Operated Detector "A" (Howler)

Description: Abstract: This discussion concerns the operation, construction, and servicing of an alpha rate meter of medium sensitivity (30,000 alpha particles full scale per minute) and good stability. The instrument is equipped with an oscillator which increases both in frequency and loudness as the alpha activity is increased. The oscillator circuit includes an anticipator which causes a change in frequency depending directly upon the rate of change of alpha activity. Maximum sensitivity is approximately… more
Date: January 29, 1946
Creator: Neil, Hugh G.
Partner: UNT Libraries Government Documents Department
open access

The Preparation of Anhydrous White Salt in Green Salt Type Box Reactors

Description: Report discussing a method for producing anhydrous TO2F2 in a box-type reactor, which takes approximately seven hours. "The method consists of a heating period of the charge oxide under oxygen, treatment, with anhydrous hydrofluoric acid gas combined with oxygen, and flushing or removal of the excess hydrofluoric acid and formed water with nitrogen gas."
Date: January 29, 1946
Creator: Johnsson, Karl Otto & Clewett, G. H.
Partner: UNT Libraries Government Documents Department
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Buffeting of External Fuel Tanks at High Speeds on a Gruman F7F-3 Airplane

Description: Attempts were made to alleviate the buffeting of external fuel tanks mounted under the wings of a twin-engine Navy fighter airplane. The Mach number at which buffeting began was increased from 0,529 to 0.640 by streamlining the sway braces and by increasing the lateral rigidity of the sway brace system. Further increase of the Mach number, at which buffeting began to 0.725, was obtained by moving the external fuel tank to a position under the fuselage.
Date: January 29, 1947
Creator: Turner, Howard L.
Partner: UNT Libraries Government Documents Department
open access

Flight Tests to Determine the Effect of Length of a Conical Windshield on the Drag of a Bluff Body at Supersonic Speeds

Description: Flight tests were conducted to determine the effect of length of a conical windshield on the drag of a bluff body moving at supersonic speeds. A comparison is made between results obtained and results of previous drag tests of body-windshield combinations.The effect of increasing the length of the windshield is discussed.
Date: January 29, 1947
Creator: Alexander, Sidney R. & Katz, Ellis
Partner: UNT Libraries Government Documents Department
open access

The High-Speed Longitudinal Stability and Control of the Bell P-39N-1 Airplane as Calculated from Propeller-Off Tests of a 0.35-Scale Model

Description: "This report presents the result of tests of a 0.35-scale model of the Bell P-39N-l airplane. Included are the longitudinal-stability and - control characteristics of the airplane as indicated by tests of the model equipped with each of two different sets of elevators. The results indicate good longitudinal stability and control throughout the speed range encounterable in flight" (p. 1).
Date: January 29, 1947
Creator: Robinson, Robert C. & Perone, Angelo
Partner: UNT Libraries Government Documents Department
open access

The High-Speed Longitudinal Stability and Control of the Bell P-39N-1 Airplane as Calculated from Propeller-Off Tests of a 0.35-Scale Model

Description: "This report presents the results of tests of a .35-scale model of the Bell P-39N-1 airplane. Included are the longitudinal-stability and -control characteristics of the airplane as indicated by tests of the model equipped with each of two different sets of elevators. The results indicate good longitudinal stability and control throughout the speed range encounterable in flight" (p. 1).
Date: January 29, 1947
Creator: Robinson, Robert C. & Perone, Angelo
Partner: UNT Libraries Government Documents Department
open access

Physiological Observations on Rabbits Exposed to Single Doses of X-Rays

Description: Abstract: Most of the acute deaths among rabbits after single total-body x radiation occur in the first two days or at 10-15 days after irradiation. Signs of clinical depression are seen in survivors of sub lethal doses during each of these periods, termed the initial shock period and the principal acute radiation period.
Date: January 29, 1947
Creator: Painter, E. E.; Prosser, C. Ladd (Clifford Ladd), 1907-2002 & Moore, M. C.
Partner: UNT Libraries Government Documents Department
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Flight Measurements of Lateral and Directional Stability and Control Characteristics of the Grumman F8F-1 Airplane

Description: "This paper presents the results of flight tests to determine the lateral and directional stability and control characteristics of the Grumman F8F-1 airplane with three vertical-tail configurations. The data presented herein have no bearing on the performance characteristics of the airplane, which were not measured but which were considered to be exceptionally good. The conclusions reached regarding the lateral and directional stability and control characteristics are summarized in this report"… more
Date: January 29, 1948
Creator: Crane, H. L. & Reeder, J. P.
Partner: UNT Libraries Government Documents Department
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A Study of Skin Temperatures of Conical Bodies in Supersonic Flight

Description: Memorandum presenting a comparison between the time history of skin temperature measured on the nose of a V-2 and the temperature computed using Eber's experimental relation for heat-transfer coefficients for conical bodies under supersonic conditions. A general method developed for making skin-temperature calculations is used to compute the variation of skin temperature with time for a wide range of values of the pertinent parameters. Results regarding the validity of skin-temperature calculat… more
Date: January 29, 1948
Creator: Huston, Wilber B.; Warfield, Calvin N. & Stone, Anna Z.
Partner: UNT Libraries Government Documents Department
open access

New reactor area

Description: This memorandum discusses discusses the design of a new reactor area in relation to the H pile.
Date: January 29, 1951
Creator: Gross, C. N.
Partner: UNT Libraries Government Documents Department
open access

The Synthetic Liquid Fuel Potential of Ohio

Description: Report documenting the suitability of Ohio for plant locations to produce synthetic liquid fuels, based on raw materials, water sources, and local interest
Date: January 29, 1951
Creator: Ford, Bacon, and Davis
Partner: UNT Libraries Government Documents Department
open access

A comparison of the spanwise loading calculated by various methods with experimental loadings obtained on a 45 degrees sweptback wing of aspect ratio 8 at a Reynolds number of 4.0 x 10(exp 6)

Description: Report presenting experimental force and moment data obtained by pressure measurements on a wing of aspect ratio 8.02, 45 degree sweepback of the quarter-chord line, taper ratio of 0.45, and NACA 63(sub 1)A012 airfoil sections, which are compared with the calculated loadings obtained by standard methods and several variations of the methods. Results regarding the system of identifying solutions, spanwise load distribution, lift-curve slope, center of pressure, wing pitching moment, and induced … more
Date: January 29, 1952
Creator: Schneider, William C.
Partner: UNT Libraries Government Documents Department
open access

Force and Pressure Investigation at Large Scale of a 49 Degree Sweptback Semispan Wing Having NACA 65A006 Sections and Equipped With Various Slat Arrangements

Description: Report presenting an investigation to determine the effect of varying the span and deflection angle of a 15-percent-chord slat on the longitudinal aerodynamic characteristics of a semispan wing with 49.1 degrees of sweepback at the leading edge, an aspect ratio of 3.78, a taper ratio of 0.586, and NACA 65A006 airfoil sections. Force measurements and chordwise pressure distributions were obtained on the wing and extended slat with and without a deflected trailing-edge flap.
Date: January 29, 1952
Creator: Lipson, Stanley & Barnett, U. Reed, Jr.
Partner: UNT Libraries Government Documents Department
open access

Investigation of Shinarump Channels on Oljetoh Mesa, Arizona - Utah

Description: From to the files: The Shinarump-Moenkopi contact on Oljetoh Mesa in the Monument Valley district, Arizona-Utah, was examined from November 5 to 15, 1951, to determine the location of and the mineralization in Shinarump channels. Twenty-seven distinct channel outcrops were located and examined. Three of these channel outcrops are mineralized and the remaining 24 are barren. Plate I shows the distribution of the Shinarump, the Moenkopi, and the DeChelly member of the Cutler formation; the locati… more
Date: January 29, 1952
Creator: Cutter, R. C.
Partner: UNT Libraries Government Documents Department
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Autoclave Testing of Mechanically Jacketed Thorium Slugs In Water

Description: Water corrosion tests on mechanically jacketed and pinholed thorium slugs show that these slugs fail in a manner similar to that observed for mechanically jacketed and tested uranium slugs. The proposed mechanism for the water corrosion of these jacketed slugs is analogous to the water corrosion mechanism of jacketed uranium slugs presented in the project lecture. A bare thorium slug appeared to be more resistant to corrosion by water than a mechanically jacketed slug during the first half of t… more
Date: January 29, 1953
Creator: Yaggee, Frank L.
Partner: UNT Libraries Government Documents Department
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Control Hinge-Moment and Effectiveness Characteristics of a Horn-Balanced, Flap-Type Control on a 55 Degree Sweptback Triangular Wing of Aspect Ratio 3.5 at Mach Numbers of 1.41, 1.62, and 1.96

Description: Memorandum presenting an investigation of a horn-balanced, flap-type control mounted on a 55 degree sweptback, triangular wing of aspect ratio 3.5 conducted in the 9- by 12-inch supersonic blowdown tunnel. The control exhibited nonlinear variations of hinge moment with both angle of attack and deflection at all Mach numbers. Results regarding control characteristics of basic configuration, effects of control trailing-edge bluntness on control characteristics, and wing characteristics are provid… more
Date: January 29, 1953
Creator: Guy, Lawrence D.
Partner: UNT Libraries Government Documents Department
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Investigation at Transonic Speeds of a Forward-Located Underslung Air Inlet on a Body of Revolution

Description: Report presenting an investigation in the transonic tunnel to determine the flow phenomena, pressure recovery, and external drag of a forward-located underslung air scoop mounted on a basic body of revolution with fineness ratio 11, which when cut off to provide an exit for the internal flow had a fineness ratio of 8. Results regarding the surface pressure distributions, drag, lift and pitching moment, and flow into the inlet on the modified model are provided.
Date: January 29, 1953
Creator: Pierpont, P. Kenneth & Braden, John A.
Partner: UNT Libraries Government Documents Department
open access

Materials Handbook : Part III - Low Tin Zirconium Alloys

Description: "These notes are intended to serve as a summary of the current knowledge of properties of materials. In the future some need may exist for related information of methods of testing, design and fabrication. This issue presents information on low tin-zirconium alloys with subdivision..."
Date: January 29, 1953
Creator: Majors, Harry, Jr.; Webster, R. T.; Wendell, G. E. & Wallace, R. H.
Partner: UNT Libraries Government Documents Department
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