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  Partner: UNT Libraries Government Documents Department
 Decade: 1950-1959
 Year: 1957
 Collection: Technical Report Archive and Image Library
Abnormal grain growth in M-252 and S-816 alloys
An experimental investigation was carried out on air- and vacuum-melted M-252 and S-816 alloys to find conditions of heating and hot-working which resulted in abnormal grain growth. The experiments were mainly limited to normal conditions of heating for hot-working and heat treatment and normal temperatures of solution treatment were used to allow grain growth after susceptibility to abnormal grain growth was developed by various experimental conditions. Results indicated that small reductions of essentially strain-free metal were the basic cause of such grain growth. digital.library.unt.edu/ark:/67531/metadc57131/
Abnormal grain growth in nickel-base heat-resistant alloys
No Description digital.library.unt.edu/ark:/67531/metadc57096/
Accelerations in fighter-airplane crashes
No Description digital.library.unt.edu/ark:/67531/metadc63594/
Accidents from explosives at metal and nonmetallic mines
Circular produced by the U.S. Bureau of Mines to promote safety through a series of reports on accident prevention in mines. According the the scope statement, "This is the fourth section of the revised series of circulars that cover various phases of accident prevention in metal and nonmetallic mines; it give information on accidents and injuries from storing, handling, and using explosive in metal and nonmetallic mines and discusses the precautions by which they can be prevented" (p. 2). digital.library.unt.edu/ark:/67531/metadc40319/
Additional experiments with flat-top wing- body combinations at high supersonic speeds
Flat top wing body configuration effects on aerodynamic characteristics of supersonic aircraft. digital.library.unt.edu/ark:/67531/metadc53065/
Aerodynamic and hydrodynamic characteristics of a proposed supersonic multijet water-based hydro-ski aircraft with a variable-incidence wing
No Description digital.library.unt.edu/ark:/67531/metadc63527/
Aerodynamic characteristics at high speeds of related full-scale propellers having different blade-section cambers
Wind-tunnel tests of a full-scale two-blade NACA 10-(10)(08)-03 (high camber) propeller have been made for a range of blade angles from 20 degrees to 55 degrees at airspeeds up to 500 miles per hour. The results of these tests have been compared with results from previous tests of the NACA 10-(3) (08)-03 (low camber) and NACA 10-(5)(08)-03 (medium camber) propellers to evaluate the effects of blade-section camber on propeller aerodynamic characteristics. digital.library.unt.edu/ark:/67531/metadc60706/
Aerodynamic characteristics at Mach number of 4.06 of a typical supersonic airplane model using body and vertical-tail wedges to improve directional stability
No Description digital.library.unt.edu/ark:/67531/metadc63668/
Aerodynamic Characteristics of a 0.04956-Scale Model of the Convair TF-102A Airplane at Transonic Speeds, Coord. No. AF-120
The basic aerodynamic characteristics of a 0.04956-scale model of the Convair TF-102A airplane with controls undeflected have been determined at Mach numbers from 0.60 to 1.135 for angles of attack up to approximately 22 deg in the Langley 8-foot transonic tunnel. In addition, comparisons have been made with data obtained from a previous investigation of a 0.04956-scale model of the Convair F-102A airplane. The results indicated the TF-102A airplane was longitudinally stable for all conditions tested. An increase in lift-curve slope from 0.045 to 0.059 and an 11-percent rearward shift in aerodynamic-center location occurred with increases in Mach number from 0.60 to approximately 1.05. The zero-lift drag coefficient for the TF-102A airplane increased 145 percent between the Mach numbers of 0.85 and 1.075; the maximum lift-drag ratio decreased from 9.5 at a Mach number of 0.60 to 5.0 at Mach numbers above 1.025. There was little difference in the lift and pitching-moment characteristics and drag due to life between the TF-102A and F-102A configurations. However, as compared with the F-102A airplane, the zero-lift drag-rise Mach number for the TF-102A was reduced by at least 0.06, the zero-lift peak wave drag was increased 50 percent, and the maximum lift-drag ratio was reduced as much as 20 percent. digital.library.unt.edu/ark:/67531/metadc64563/
The aerodynamic characteristics of a body in the two-dimensional flow field of a circular-arc wing at a Mach number of 2.01
No Description digital.library.unt.edu/ark:/67531/metadc63525/
Aerodynamic characteristics of a circular cylinder at Mach number 6.86 and angles of attack up to 90 degrees
Pressure-distribution and force tests of a circular cylinder have been made in the Langley 11-inch hypersonic tunnel at a Mach number of 6.88, a Reynolds number of 129,000, and angles of attack up to 90 degrees. The results are compared with the hypersonic approximation of Grimminger, Williams, and Young and a simple modification of the Newtonian flow theory. An evaluation of the crossflow theory is made through comparison of present results with available crossflow Mach number drag coefficients. digital.library.unt.edu/ark:/67531/metadc56263/
Aerodynamic characteristics of a model of an escape capsule for a supersonic bomber-type airplane at a Mach number of 2.49
No Description digital.library.unt.edu/ark:/67531/metadc63900/
Aerodynamic characteristics of missile configurations with wings of low aspect ratio for various combinations of forebodies, afterbodies, and nose shapes for combined angles of attack and sideslip at a Mach number of 2.01
An investigation has been made in the Langley 4-by-4-foot supersonic pressure tunnel to determine the aerodynamic characteristics of a series of missile configurations having low-aspect-ratio wings at a Mach number of 2.01. The effects of wing plan form and size, length-diameter ratio, forebody and afterbody length, boattailed and flared afterbodies, and component force and moment data are presented for combined angles of attack and sideslip to about 28 degrees. No analysis of the data was made in this report. digital.library.unt.edu/ark:/67531/metadc63637/
Aerodynamic Forces and Moments on a Large Ogive-Cylinder Store at Various Locations Below the Fuselage Center Line of a Swept-Wing Bomber Configuration at a Mach Number of 1.61
A supersonic wind-tunnel investigation on store interference has been conducted in the Langley 4- by 4-foot supersonic pressure tunnel at a Mach number of 1.61. Forces and moments were measured on a large ogive-cylinder store in the presence of a 45 deg swept-wing-fuselage bomber configuration for a number of store locations below the fuselage center line. Results of the investigation show that large variations of store lift, drag, and pitch occur with changes in store or airplane angle of attack, store vertical location, and store horizontal location. The variation of the store forces and moments with respect to the chordwise location of the wing plan form indicates that the wing is a large factor in producing the interference loads on the store. Comparison of data for underfuselage and underwing store locations at an angle of attack of 0 deg showed maximum store drag interferences of similar magnitudes, but showed considerably smaller maximum interference on store lift an pitching moments for underfuselage store locations. digital.library.unt.edu/ark:/67531/metadc52977/
Aerodynamic Forces on a Vibrating Unstaggered Cascade
The unsteady aerodynamic forces, [based on two-dimensional incompressible flow considerations], are determined for an unstaggered cascade, the blades of which are vibrating in phase in an approach flow parallel to the blades. digital.library.unt.edu/ark:/67531/metadc64042/
Aerodynamic Heating and Boundary-layer Transition on a 1/10-power nose shape in free flight at Mach numbers up to 6.7 and Free-stream Reynolds numbers up tp 16 x 10(exp 6)
No Description digital.library.unt.edu/ark:/67531/metadc63557/
Aerodynamic heating of a thin, unswept, untapered, multiweb, aluminum-alloy wing at Mach numbers up to 2.67 as determined from a free-flight investigation of a rocket-propelled model
No Description digital.library.unt.edu/ark:/67531/metadc63538/
Aerodynamic interference of slender wing-tail combinations
No Description digital.library.unt.edu/ark:/67531/metadc55977/
Aerodynamic load distribution over a 45 degree swept wing having a spoiler-slot-deflector aileron and other spoiler ailerons for Mach numbers from 0.60 to 1.03
No Description digital.library.unt.edu/ark:/67531/metadc64127/
Aerodynamic Loads on Tails at High Angles of Attack and Sideslip
Results are presented for the loads and moments acting on the individual tail surfaces of a body-tail combination over a wide range of angles of attack and sideslip. The effects of forebody length and panel-panel interference on the characteristics are included. It is shown that large nonlinear variations in these loads and moments, which occur at some combinations of angle of attack and sideslip, cannot be predicted by low-angle theory. A relatively simple, but general, theoretical method for calculating these load and moment characteristics is described, and the results from this method are found to be in good agreement with experiment provided the initial positions of the forebody vortices are known. It is shown that a simple application of slender-body theory can be used to predict the side loads due to sideslip that are contributed by a vertical tail on a wide variety of wing-body-tail combinations at low angles of attack. For several configurations, changes are indicated which reduced the vertical-tail loads per unit yawing moment of each complete configuration at large angles of attack. Some results are presented on the effect of high angle of attack on the induced-flow field and tail loads due to a wing at supersonic speed. digital.library.unt.edu/ark:/67531/metadc52998/
Aerodynamic performance of several techniques for spike-position control of a blunt-lip nose inlet having internal contraction; Mach numbers of 0.63 and 1.5 to 2.0
No Description digital.library.unt.edu/ark:/67531/metadc63487/
Aerodynamics of Oscillating Control Surfaces at Transonic Speeds
Aerodynamic forces and moments of oscillating control surfaces at transonic speeds. digital.library.unt.edu/ark:/67531/metadc52924/
Aging Characteristics of Hastelloy B
Report issued by the Oak Ridge National Laboratory discussing the aging characteristics of the alloy Hastelloy B. Materials, equipment, experimental procedures, and results used to determine the characteristics of the alloy are presented. This report includes tables, illustrations, and photographs. digital.library.unt.edu/ark:/67531/metadc100323/
An air-borne target simulator for use with scope-presentation type fire-control systems
No Description digital.library.unt.edu/ark:/67531/metadc63341/
Airplane measurements of atmospheric turbulence for altitudes between 20,000 and 55,000 feet over the western part of the United States
No Description digital.library.unt.edu/ark:/67531/metadc64495/
Altitude chamber evaluation of an aircraft liquid hydrogen fuel system used with a turbojet engine
No Description digital.library.unt.edu/ark:/67531/metadc53234/
Altitude free-jet investigation of dynamics of a 28-inch-diameter ram-jet engine
No Description digital.library.unt.edu/ark:/67531/metadc53205/
Altitude performance of a full-scale turbojet engine using pentaborane fuels
No Description digital.library.unt.edu/ark:/67531/metadc60821/
Altitude performance of a turbojet engine using pentaborane fuel
Altitude performance of turbojet engine using pentaborane fuel. digital.library.unt.edu/ark:/67531/metadc53087/
Altitude performance of a turbojet engine using pentaborane fuel
A full-scale turbojet engine having a two-stage turbine was operated with pentaborane fuel continuously for 11.5 minutes at a simulated altitude of 55,000 feet at a flight Mach number of 0.8. The engine incorporated an NACA combustor designed specifically for use with pentaborane fuel. The specific fuel consumption was initially reduced 32 percent below that obtained with gasoline fuel; however, the occurrence of a 25-percent reduction in net thrust after 8 minutes of operation resulted in a subsequent increase in specific fuel consumption to a value only 11.5 percent lower than that for gasoline. digital.library.unt.edu/ark:/67531/metadc64962/
Altitude performance of pentaborane - JP-4 fuel blends in a modified J47 combustor
No Description digital.library.unt.edu/ark:/67531/metadc60709/
Altitude Starting Tests of a 1000-Pound-Thrust Solid-Propellant Rocket
Four solid-propellant rocket engines of nominal 1000-pound-thrust were tested for starting characteristics at pressure altitudes ranging from 112,500 to 123,000 feet and at a temperature of -75 F. All engines ignited and operated successfully. Average chamber pressures ranged from 1060 to ll90 pounds per square inch absolute with action times from 1.51 to 1.64 seconds and ignition delays from 0.070 t o approximately 0.088 second. The chamber pressures and action times were near the specifications, but the ignition delay was almost twice the specified value of 0.040 second. digital.library.unt.edu/ark:/67531/metadc64085/
Altitude starting tests of a small solid propellant rocket
No Description digital.library.unt.edu/ark:/67531/metadc53158/
Altitude-Wind-Tunnel Investigation of the 19B-2, 19B-8, and 19XB-1 Jet Propulsion Engines, 3, Performance and Windmilling Drag Characteristics
The performance characteristics of the 19B-8 and 19XB-1 turbojet engines and the windmilling-drag characteristics of the 19B-6 engine were determined in the Cleveland altitude wind tunnel. The investigations were conducted on the 19B-8 engine at simulated altitudes from 5000 to 25,000 feet with various free-stream ram-pressure ratios and on the 19XB--1 engine at simulated altitudes from 5000 to 30,000 feet with approximately static free-stream conditions. Data for these two engines are presented to show the effect of altitude, free-stream ram-pressure ratio, and tail-pipe-nozzle area on engine performance. A 21-percent reduction in tail-pipe-nozzle area of the 19B-8 engine increased the let thrust 43 percent the net thrust 72 percent, and the fuel consumption 64 percent. An increase in free-stream ram-pressure ratio raised the jet thrust and the air flow and lowered the net thrust throughout the entire range of engine speeds for the 19B-8 engine. At similar operating conditions, the corrected jet thrust and corrected air flow were approximately the same for both engines, and the corrected specific fuel consumption based on jet thrust was lower for the 19XB-1 engine than for the 19B-8 engine. The thrust and air-flow data obtained with both engines at various altitudes for a given free-stream rampressure ratio were generalized to standard sea-level atmospheric conditions. The performance parameters involving fuel consumption generalized only at high engine speeds at simulated altitudes as high as 15,000 feet. The windmilling drag of the 19B-8 engine increased rapidly as the airspeed was increased. digital.library.unt.edu/ark:/67531/metadc65461/
American Standard Recommended Practice for Drainage of Coal Mines (M6.1-1955, UDC 622.5)
No Description digital.library.unt.edu/ark:/67531/metadc12724/
An analog computer study of several stability augmentation schemes designed to alleviate roll-induced instability
No Description digital.library.unt.edu/ark:/67531/metadc62909/
Analog computer study of some filtering, command-computer, and automatic-pilot problems connected with the attack phase of the automatically controlled supersonic interceptor
No Description digital.library.unt.edu/ark:/67531/metadc63682/
Analyses for turbojet thrust augmentation with fuel-rich afterburning of hydrogen, diborane, and hydrazine
No Description digital.library.unt.edu/ark:/67531/metadc63662/
Analyses for turbojet thrust augmentation with fuel-rich afterburning of hydrogen, diborane, and hydrazine
Turbojet thrust augmentation with fuel-rich afterburning of hydrogen, diborane, and hydrazine. digital.library.unt.edu/ark:/67531/metadc53092/
Analysis of coolant flow and pressure requirements for a return-flow turbine rotor blade design using hydrogen, helium, or air as coolant
No Description digital.library.unt.edu/ark:/67531/metadc63211/
Analysis of efficiency characteristics of a single-stage turbine with downstream stators in terms of work and speed requirements
One-dimensional mean-section flow and blade specific losses proportional to average specific kinetic energy are assumed in the analysis. Range of the work-speed parameter lambda considered includes low to moderate blade speeds with high specific work outputs, where critical turbojet, turbopump, and accessory-drive turbines are encountered. A diffusion factor of 0.5 limits the loading on the downstream stators. Turbine efficiences considered are total or aerodynamic, rating, and static. Efficiences of velocity-diagram types at impulse and that corresponding to values of maximum efficiency are presented and compared to indicate in what range of lambda downstream stators are beneficial as well as the attending improvements in efficiency. digital.library.unt.edu/ark:/67531/metadc64383/
Analysis of experimental low-speed loss and stall characteristics of two-dimensional compressor blade cascades
No Description digital.library.unt.edu/ark:/67531/metadc62962/
Analysis of fluorine addition to the vanguard first stage
The effect of adding fluorine to the Vanguard first-stage oxidant was anlyzed. An increase in specific impulse of 5.74 percent may be obtained with 30 percent fluorine. This increase, coupled with increased mass ratio due to greater oxidant density, gave up to 24.6-percent increase in first-stage burnout energy with 30 percent fluorine added. However, a change in tank configuration is required to accommodate the higher oxidant-fuel ratio necessary for peak specific impulse with fluorine addition. digital.library.unt.edu/ark:/67531/metadc63352/
Analysis of fluorine addition to the vanguard first stage
Addition of liquid fluorine to liquid oxygen in Vanguard first stage oxygen-hydrocarbon rocket engine. digital.library.unt.edu/ark:/67531/metadc52991/
Analysis of horizontal-tail loads in pitching maneuvers on a flexible swept-wing jet bomber
No Description digital.library.unt.edu/ark:/67531/metadc57198/
Analysis of limitations imposed on one-spool ducted-fan-engine designs by compressors and turbines at flight Mach numbers of 0, 0.6, and 0.8
No Description digital.library.unt.edu/ark:/67531/metadc63601/
Analysis of Meteorological Tower Data, April 1950 - March 1952, Brookhaven National Laboratory
Report issued by the Brookhaven National Laboratory discussing data collected from two BNL meteorological towers. As stated in the introduction, "results are presented in graphic form rather than tabular form" (p. 1). This report includes tables, maps, illustrations, and photographs. digital.library.unt.edu/ark:/67531/metadc170954/
Analysis of operational airline data to show the effects of airborne weather radar on the gust loads and operating practices of twin-engine short-haul transport airplanes
No Description digital.library.unt.edu/ark:/67531/metadc56655/
Analysis of shock motion in ducts during disturbances in downstream pressure
No Description digital.library.unt.edu/ark:/67531/metadc56501/
Analysis of static aeroelastic behavior of low-aspect-ratio rectangular wings
No Description digital.library.unt.edu/ark:/67531/metadc56318/
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