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Effects of Fuselage Modifications on the Drag Characteristics of a 1/20-Scale Model of the Convair F-102 Airplane at Transonic Speeds

Description: From Summary: "An investigation has been conducted in the Langley 8-foot transonic tunnel to determine the effects of several fuselage modifications on the transonic drag-rise characteristics of a 1/20-scale model of the Convair F-102 airplane. Tests covered an angle-of-attack range from 0 degrees to about 10 degrees and a Mach number range from 0.60 to 1.14."
Date: November 2, 1954
Creator: Kelly, Thomas C. & Osborne, Robert S.
Partner: UNT Libraries Government Documents Department
open access

Preliminary Altitude Operational Characteristics of a J57-P1 Turbojet Engine

Description: "The operational characteristics of a J57-P1 turbojet engine have been investigated at altitudes between 15,000 and 66,000 feet in the Lewis altitude wind tunnel. Included in this study is a discussion of fuel nozzle coking, the altitude operating limits with and without the standard engine control, the compressor surge characteristics, and the engine starting and windmilling characteristics. Severe circumferential turbine outlet temperature gradients which occurred at high altitude as a result… more
Date: April 2, 1954
Creator: Wallner, Lewis E. & Saari, Martin J.
Partner: UNT Libraries Government Documents Department
open access

Engine performance of alloy 73J turbine blades cast to predetermined grain sizes

Description: Report presenting an investigation to determine the suitability of alloy 73J as a turbojet turbine-blade alloy and the effect of grain size on engine operating life. Blades made of alloy 73J were run in a full-scale J33-9 turbojet engine under cyclic conditions. Results regarding the macroexamination of blades, engine life, engine life against stress-rupture life, blade failures, blade elongation, metallographic results, and blade dimensions and the possible effects of overdimensions are provid… more
Date: July 2, 1954
Creator: Johnston, James R.; Gyorgak, Charles A. & Weeton, John W.
Partner: UNT Libraries Government Documents Department
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An investigation at high subsonic speeds of the pressure distributions on a 45 degree sweptback vertical tail in sideslip with and without a 45 degree sweptback horizontal tail located on the fuselage center line

Description: Report presenting an investigation in the high-speed tunnel at high subsonic speeds and several angles of attack of the chordwise pressure distribution at six spanwise stations on a 45 degree sweptback, untapered vertical tail in sideslip. The presence of the horizontal tail slightly increased the value of section normal-force coefficients on the vertical tail but did not materially alter the nature of the load distribution.
Date: November 2, 1954
Creator: Wiley, Harleth G. & Moseley, William C., Jr.
Partner: UNT Libraries Government Documents Department
open access

Summary of 65-Series Compressor-Blade Low-Speed Cascade Data by Use of the Carpet-Plotting Technique

Description: Memorandum presenting the carpet-plotting technique as a more useful and concise method of summarizing the 65-series compressor-blade cascade data. Four different carpet plots are presented. A sample use of the carpet plots is also provided.
Date: November 2, 1954
Creator: Felix, A. Richard
Partner: UNT Libraries Government Documents Department
open access

Effects of Additives on Corrosion and Mass Transfer in Sodium Hydroxide - Nickel Systems Under Free-Convection Conditions

Description: Memorandum presenting a study of the effect of additives on the extent of corrosion and mass transfer in sodium hydroxide - "L" nickel systems. The extent of corrosion and mass transfer was determined by a measurement of the weight change of a specimen in the hot zone, and by metallographic examination of the specimen cross section. Results regarding the reproducibility, appearance of specimens, and additives having a detrimental effect, no effect, or a beneficial effect are provided.
Date: August 2, 1954
Creator: Forestieri, Americo F.
Partner: UNT Libraries Government Documents Department
open access

Investigation of a trailing-edge paddle-control surface on a triangular wing of aspect ratio 2 at subsonic and supersonic speeds

Description: Report presenting an experimental investigation of external airfoils, known as paddle-control surfaces, as the longitudinal control device on a triangular wing of aspect ratio 2. The lift, drag, pitching moment, and hinge moment were obtained for a variety of Mach numbers.
Date: February 2, 1954
Creator: Ball, Louis H.
Partner: UNT Libraries Government Documents Department
open access

Comparison of Experimental Hydrodynamic Impact Loads and Motions for a V-Step and a Transverse-Step Hydro-Ski

Description: Report presenting a comparison of the hydrodynamic impact loads and motions encountered in testing a V-step and a transverse-step flat-bottom hydro-ski with beam loadings of about 4.5. Testing occurred in smooth water over a range of velocities, flight-path angles, and fixed trims. Results regarding time histories of draft, vertical velocity, and vertical acceleration, impact lift coefficient, draft coefficient, and time coefficient for rebound are provided.
Date: February 2, 1954
Creator: Miller, Robert W.
Partner: UNT Libraries Government Documents Department
open access

Effect of Wedge-Type Boundary-Layer Diverters on Performance of Half-Conical Side Inlets at Mach Number 2.96

Description: Report presenting an investigation at Mach number 2.96 to study the effects of wedge-type boundary-layer removal on the performance of side inlets with half of a double-conical external-compression surface. Some of the parameters investigated were the wedge height, wedge inclined angle, wedge-tip position, and splitter-plate geometry. Two lengths of constant-area diffuser throat section were also considered.
Date: August 2, 1954
Creator: Johnson, Harry W. & Piercy, Thomas G.
Partner: UNT Libraries Government Documents Department
open access

Design and Experimental Investigation of Light-Weight Bases for Air-Cooled Turbine Rotor Blades

Description: Memorandum presenting an investigation of the problem of air-cooled turbine rotor-blade weight reduction for aircraft gas turbines as part of the NACA turbine-cooling research program. A bulb-root-type blade-base design was achieved which utilized forming and brazing techniques in its manufacture and was combined with an axial-flow turbojet engine aerodynamic profile. Results regarding the sheet-metal bulb-root-type air-cooled base designs, air-cooled pinned-type base design, and some weight re… more
Date: July 2, 1954
Creator: Freche, John C. & McKinnon, Roy A.
Partner: UNT Libraries Government Documents Department
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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

Description: 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.
Partner: UNT Libraries Government Documents Department
open access

The Effect of a Change in Body Shape on the Loading of a 45 Degree Sweptback Wing-Body Combination at Transonic Speeds

Description: Memorandum presenting an investigation made in the 8-foot transonic tunnel of the pressure distribution on a wing-body combination with a 45 degree sweptback wing with aspect ratio 4, taper ratio 0.6, and NACA 65A006 airfoil sections parallel to the plane of symmetry. The chordwise pressure distributions, which were determined at various spanwise stations, indicate that the flow about the two configurations is the same. Results regarding basic pressure measurements and loading and aerodynamic c… more
Date: April 2, 1954
Creator: Loving, Donald L.
Partner: UNT Libraries Government Documents Department
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Preliminary Investigation of Stress-Rupture and Tensile Strength of Thermenol, an Iron-Aluminum Alloy

Description: Memorandum presenting an investigation conducted to determine the stress-rupture life at 1100 and 1200 degrees Fahrenheit, the room temperature tensile strength, and the bend ductility of Thermenol. The alloy is made oxidation-resistant through the use of aluminum.
Date: August 2, 1954
Creator: Gyorgak, Charles A.
Partner: UNT Libraries Government Documents Department
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Organophosphorus compounds in rocket-engine applications

Description: Report presenting experimental ignition-delay determinations of mixed alkyl thiophosphites, triethyl trithiophsphite, and propylene N,N-dimethylamidophosphite with red and white fuming nitric acid conducted at a range of temperatures and pressure altitudes. The literature pertaining to the use of organo-phosphorous compounds in rocket-propellant combinations was surveyed and summarized with emphasis on ignition-delay investigations.
Date: April 2, 1954
Creator: Ladanyi, Dezso J. & Hennings, Glen
Partner: UNT Libraries Government Documents Department
open access

Acceleration of high-pressure-ratio single-spool turbojet engine as determined from component performance characteristics 3: effect of turbine stator adjustment

Description: From Summary: "An analytical investigation was made to determine from component performance the effect of turbine stator adjustment on the acceleration characteristics of a typical high-pressure-ratio single-spool turbojet engine. Turbine stator adjustment was adequate to permit engine operation in the intermediate-speed range, but was less satisfactory than the relatively simple schemes of compressor-interstage and -outlet bleed."
Date: August 2, 1954
Creator: Rohlik, Harold E. & Rebeske, John J.
Partner: UNT Libraries Government Documents Department
open access

Multiple over-all performance and rotating-stall characteristics of a 15-stage experimental axial-flow compressor at an intermediate speed

Description: From Summary: "The 15-stage experimental axial-flow compressor was investigated at 78.5 percent of design speed, which falls in the region of the surge-limit line discontinuity. In this region indications of multiple characteristic curves of compressor operation had been found. On the basis of previous stage-matching analyses, these multiple performance characteristics appear to be the result of multiple-valued stage performance characteristics."
Date: July 2, 1954
Creator: Lucas, James G. & Filippi, Richard E.
Partner: UNT Libraries Government Documents Department
open access

An evaluation of turbojet engine thrust control by exhaust-nozzle-area modulation and compressor-inlet throttling

Description: Report presenting an experimental investigation at sea-level static conditions to determine the thrust control possible with a modern axial-flow turbojet engine at rated engine speeds using compressor-inlet throttling in conjunction with exhaust-nozzle-area modulation. Results regarding the thrust reduction using exhaust-nozzle-area modulation alone and in conjunction with the compressor-inlet throttling are provided.
Date: August 2, 1954
Creator: Harp, James L., Jr.; Velie, Wallace W. & Mallett, William E.
Partner: UNT Libraries Government Documents Department
open access

Investigation of Mechanical Fastenings for Solid Turbine Blades Made From Ductile Materials

Description: Report presenting rupture testing conducted on tensile specimens of fir-tree turbine blade root fastenings for three specific turbojet engines. Testing was conducted at temperatures from 0 degrees to 1500 degrees. Results regarding the short-time tests at various temperatures, long-time stress-rupture tests at 1200 degrees Fahrenheit, long-time tests at increased temperature, and remarks on the criteria for using the fir-tree root design are provided.
Date: August 2, 1954
Creator: Meyer, André J., Jr.; Kaufman, Albert & Caywood, W. C.
Partner: UNT Libraries Government Documents Department
open access

Methods of predicting helicopter stability

Description: From Summary: "Some of the methods of predicting rotor stability derivatives have been reviewed. The methods by which these rotor derivatives are employed to estimate helicopter stability characteristics have been summarized. It is concluded that, although these methods are not always feasible for predicting absolute values of the stability of the helicopter, the effects on stability of changes in individual derivatives can generlaly be estimated satisfactorily."
Date: November 2, 1954
Creator: Tapscott, Robert J. & Gustafson, F. B.
Partner: UNT Libraries Government Documents Department
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Production test 231-12: Recovery of americium. Final report

Description: In response to the need for isolating small quantities of americium for employment in research studies, principally at laboratories not connected with the Hanford Atomic Products Operation, a program was formulated to accomplish this at minimum cost and disturbance to plutonium production. This report describes the operations employed and the results obtained in the isolation of americium from aged plutonium nitrate solution utilizing the Isolation Building process equipment.
Date: March 2, 1954
Creator: Packer, G.V.
Partner: UNT Libraries Government Documents Department
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[News Script: Cisco and Pancho fly in for show]

Description: Script from the WBAP-TV station in Fort Worth, Texas, covering a news story about Duncan Renaldo and Leo Carrillo, stars of the television series The Cisco Kid, flying in to Dallas to star in the Cotton Bowl's holiday show.
Date: July 2, 1954
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Partner: UNT Libraries Special Collections
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