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Investigation of the Aerodynamic Characteristics of the NACA RM-10 Missile (With Fins) at a Mach Number of 1.62 in the Langley 9-Inch Supersonic Tunnel
Report presenting an investigation of a fin-stabilized scale model of the NACA RM-10 missile at a Mach number of 1.62. Measurements were made of the lift, drag, and pitching moment of the finned body over a range of angles of attack. Comparisons with the results from other testing facilities are also provided.
Date:
December 19, 1952
Creator:
Coletti, Donald E.
System:
The UNT Digital Library
The Rolling of Thorium Rod
Report discussing the rolling of thorium rods. Abstract: "Thorium rods, 1-7/16 inch in diameter, were rolled from Ames castings. The billets were roughed down in diamond-grooved rolls and finished in hand-rounding rolls. Remelted chips as well as primary-metal castings were rolled, and both yielded satisfactory rods. The surface quality of the rods was generally excellent, and the machined slugs were free of seams."
Date:
December 19, 1951
Creator:
Saller, Henry A.; Keeler, J. R. & Donley, R. J.
System:
The UNT Digital Library
Facilities of the National Bureau of Standards
From forward: Every laboratory in this country is a valuable national resource. Along with the people who work in these facilities, U.S. laboratories constitute the basic foundation of this country's scientific and industrial strength. As the nation's foremost science and engineering measurement laboratory, the National Bureau of Standards has some of the premier research and testing facilities in the United States, and several of our laboratories are unequaled anywhere in the world. Bureau scientists and engineers use these special facilities to pursue the measurement-related work that U.S. science and industry need to grow and prosper. This brochure highlights only a small number of the special facilities available at NBS and provides information about their availability for collaborative or independent research and testing.
Date:
December 19, 1984
Creator:
United States. National Bureau of Standards.
System:
The UNT Digital Library
Spontaneous Fission of 48
Report discussing an experiment to reinvestigate the spontaneous fission of 48 (Pu-238) in an effort to determine a more accurate value for the spontaneous fission constant that was found in a previous experiment.
Date:
December 19, 1949
Creator:
Jungerman, John A.
System:
The UNT Digital Library
Feasibility Study of a New Mass Flow System : Quarterly Report No. 2 Covering the Period from September 1 to November 30, 1960
This is the second quarterly report that documents a system of mass flow that can record measurements of homogeneous flow, slurries, highly corrosive fluids and multiphase fluids, additionally considering pressure drops, measuring external to the flow, ruggedness and reliability.
Date:
December 19, 1960
Creator:
Burgwald, G. M.; Stone, C. A. & Genthe, William K.
System:
The UNT Digital Library
Thorium and Thorium Alloys Preliminary Corrosion Tests
Technical report investigating the corrosion resistance of thorium and thorium alloys containing from 2 to 6% chromium, columbinium (niobium), titanium, zirconium and titanium-zirconium in distilled water at 95ºC. The true effects of the various alloy additions could not be determined because of the more marked effect of cold working. [From Abstract]
Date:
December 19, 1951
Creator:
Olsen, Arnold R.
System:
The UNT Digital Library
Heavy Aggregate Investigation
This report follows a manuscript report made in January 11, 1952, and provides results of a survey that gives corrections as well as suggestions for new and local sources of aggregate material in comparison to the original report. These reports were made in response to a heavy desire of improvement in reactor design and shielding.
Date:
December 19, 1952
Creator:
Brown, R. E.
System:
The UNT Digital Library
Refrigeration System Used in Mercury Isotope Collections
From introduction: During 1948, the Isotope Research and Production Division undertook to obtain small quantities of nearly pure mercury isotopes by electromagnetic isotope separation. The possible use of a mercury isotope of even-numbered mass to establish an international standard of length required an isotopic purity greater than 99 per cent. It, became apparent that this degree of separation could only be achieved by preventing random diffusion of un-ionized mercury which otherwise would contaminate the isotope collectors.
Date:
December 19, 1949
Creator:
Duncan, F. R. & Cobb, W. G.
System:
The UNT Digital Library
Rocket-engine throttling
An investigation of the performance and operating characteristics of two variable-thrust injectors over a wide thrust range using mixed oxides of nitrogen and ammonia. Specific impulse, characteristic velocity, thrust coefficient, and overall efficiency are presented as functions of thrust. A maximum thrust range of 12 during one run was obtained with a triplet impinging-jet injector.
Date:
December 19, 1955
Creator:
Tomazic, William A.
System:
The UNT Digital Library
Design procedure for transpiration-cooled strut-supported turbine rotor blades
From Summary: "The procedure currently employed by the NACA Lewis Laboratory in the design of transpiration-cooled strut-supported turbine rotor blades is discussed. The strut is the internal blade supporting member and also serves to partition the blade into separate cooling-air passages. Orifices in the blade base, which meter the cooling-air to each internal passage, are used in conjunction with a constant chordwise permeability."
Date:
December 19, 1955
Creator:
Prasse, Ernst I. & Livingood, John N. B.
System:
The UNT Digital Library
Preliminary investigation of effect on performance of dividing conical-spike nose inlets into halves at Mach numbers 1.5 to 2.0
Inserting a splitter plate in the subsonic diffuser caused a pressure-recovery loss of about 1 percent for an inlet with a long nearly constant-area throat section. The loss was due to the increased surface area. Another inlet, which had a comparatively rapid area increase immediately after the throat, experienced pressure-recovery losses of 5 and 6 percent at Mach numbers of 1.8 and 2.0, respectively, and about 1 percent at Mach 1.5.
Date:
December 19, 1955
Creator:
Allen, John L.
System:
The UNT Digital Library
Performance and Component Frontal Areas of a Hypothetical Two-Spool Turbojet Engine for Three Modes of Operation
Engine performance is better for constant outer-spool mechanical-speed operation than for constant inner-spool mechanical-speed operation over most of the flight range considered. Combustor and afterburner frontal areas are about the same for the two modes. Engine performance for a mode characterized by a constant outer-spool equivalent speed over part of the flight range and a constant outer-spool mechanical speed over the rest of the flight range is better that that for constant outer-spool mechanical speed operation.
Date:
December 19, 1955
Creator:
Dugan, James F., Jr.
System:
The UNT Digital Library
Turbojet engine investigation of effect of thermal shock induced by external water-spray cooling on turbine blades of five high-temperature alloys
Report presenting an investigation of the thermal-shock effect of water-spray impingement upon turbine rotor blades subjected to rated engine operating conditions using external water-spray cooling. Turbine-blade cooling water was turned on and off in cycles which employed either sudden or gradual injection of cooling water. Results regarding blades modified and unmodified for rotating injection are provided.
Date:
December 19, 1955
Creator:
Freche, John C. & Hickel, Robert O.
System:
The UNT Digital Library
Heat-Transfer and Pressure Measurements from a Flight Test of a 1/18-Scale Model of the Titan Intercontinental Ballistic Missile Up to a Mach Number of 3.95 and Reynolds Number Per Foot of 23 by 10 to the 6th Power
Report discussing the boundary-layer transition and heat-transfer measurements for a model of the Titan intercontinental ballistic missile up to a specified Mach and Reynolds number. Boundary-layer transition was observed on the nose of the missile. The drag coefficient for a variety of Mach numbers was also obtained.
Date:
December 19, 1957
Creator:
Graham, John B., Jr.; Chauvin, Leo T. & Speegle, Katherine C.
System:
The UNT Digital Library
Wind-Tunnel Investigation of the Descent Characteristics of Bodies of Revolution Simulating Anti-Personnel Bombs
"An investigation has been conducted in the Langley 20-foot free spinning tunnel to study the relative behavior in descent of a number of homogeneous balsa bodies of revolution simulating anti-personnel bombs with a small cylindrical exploding device suspended approximately 10 feet below the bomb. The bodies of revolution included hemispherical, near-hemispherical, and near-paraboloid shapes. The ordinates of one near-paraboloid shape were specified by the Office of the Chief of Ordnance, U. S. Army" (p. 1).
Date:
December 19, 1951
Creator:
Scher, Stanley H.
System:
The UNT Digital Library
Investigation of wing characteristics at a Mach number of 1.53 1: triangular wings of aspect ratio 2
Report presenting wind-tunnel testing conducted on three sharp-edge wing models with a thickness ratio of 5 percent and a common triangular plan form of aspect ratio 2. Measurements of lift, drag, and pitching moment were made at Mach number 1.53. The experimental lift and moment curves were found to conform essentially with the superposition principle of the linear theory.
Date:
December 19, 1947
Creator:
Vincenti, Walter G.; Nielsen, Jack N. & Matteson, Frederick H.
System:
The UNT Digital Library
High-Speed Wind-Tunnel Investigation of the Lateral Control Characteristics of Plain Ailerons on a Wing with Various Amounts of Sweep
"A three-dimensional investigation of straight-sided-profile plain ailerons on a wing with 30 degrees and 45 degrees of sweepback and sweepforward was made in a high-speed wind tunnel for aileron deflections from -10 degrees to 10 degrees and at Mach numbers from 0.60 to 0.96. Wing configurations of 30 degrees generally reduced the severity of the large changes in rolling-moment and aileron hinge-moment coefficients experienced by the upswept wing configurations as the result of compression shock and extended to higher Mach numbers the speeds at which such changes occurred" (p. 1).
Date:
December 19, 1947
Creator:
Luoma, Arvo A.; Bielat, Ralph P. & Whitcomb, Richard T.
System:
The UNT Digital Library
Investigation of Pressure Distribution over an Extended Leading-Edge Flap on a 42 Degrees Sweptback Wing
Pressure distribution over an extended leading-edge flap on a 42 degree swept-back wing was investigated. Results indicate that the flap normal-force coefficient increased almost linearly with the angle of attack to a maximum value of 3.25. The maximum section normal-force coefficient was located about 30 percent of the flap span outboard of the inboard end and had a value of 3.75. Peak negative pressures built up at the flap leading edge as the angle of attack was increased and caused the chordwise location of the flap center of pressure to be move forward.
Date:
December 19, 1947
Creator:
Conner, D. William & Foster, Gerald V.
System:
The UNT Digital Library
Resume of Wind-Tunnel Data on the Effect of External Stores on Stability of Models of Military Airplanes
Report presenting a study of static wind-tunnel data on the effects of external stores like tanks, torpedoes, bombs, and radar domes on the stability of military airplanes. The results are focused on longitudinal and lateral stability. Static longitudinal stability is affected at various Mach numbers, but the data was not sufficient to estimate the effect on the lateral stability.
Date:
December 19, 1946
Creator:
Silvers, H. Norman & Vogler, Raymond D.
System:
The UNT Digital Library
Altitude Performance Characteristics of Tail-Pipe Burner With Converging Conical Burner Section on J47 Turbojet Engine
From Introduction: "The effect of flame-holder and fuel-system design on the burner performance and the effect of altitude and flight Mach number on over-all performance with a fixed-area exhaust nozzle are reported in reference 1 to 4. Altitude performance characteristics of a tail-pipe burner having a converging conical burner section are presented in this report. Tail-pipe burner performance at several flight conditions is given in both tabular and graphical forms and compared with performance of the standard engine and of the tail-pipe burner reported in reference 2."
Date:
December 19, 1950
Creator:
Prince, William R. & McAulay, John E.
System:
The UNT Digital Library
A transonic wind-tunnel investigation of the characteristics of a twisted and cambered 45 degree sweptback wing-fuselage configuration
Report presenting an investigation in the 8-foot transonic tunnel to determine the effects of twist and camber on the aerodynamic characteristics of a sweptback wing-fuselage configuration. The wing had 45 degrees sweepback of the 0.25 chord, an aspect ratio of 4, a taper ratio of 0.6, and NACA 65A-series airfoil sections with 6-percent thickness distribution parallel to the plane of symmetry. Results regarding the lift characteristics, drag characteristics, and pitching-moment characteristics are provided.
Date:
December 19, 1952
Creator:
Harrison, Daniel E.
System:
The UNT Digital Library
Fundamental flame velocity, heat of combustion, and spontaneous ignition temperature of dimethylaminodiborane
The following properties have been determined for a sample of dimethylaminodiborane : (1) maximum fundamental flame velocity for fuel and air at 35 degrees C, 115 +/- 5 centimeters per second ; (2) net (lower) heat of combustion of liquid fuel to gaseous nitrogen, carbon dioxide, and water, and to solid boric oxide, 19,225 +/- 100 Btu per pound ; and (3) spontaneous ignition temperature, 240 degrees +/- 10 degrees F.
Date:
December 19, 1956
Creator:
Hibbard, Robert R. & Dugger, Gordon L.
System:
The UNT Digital Library
Thermal Stability of Pentaborane in the Range 329 to 419 Degrees F
"The thermal stability of pentaborane has been determined in the temperature range 329 degrees to 419 degrees Fahrenheit by measuring the increase with time in the formation of nonvolatile residue. A relationship was established between the thermal stability and the temperature. The expression permitted extrapolation to obtain the stability of pentaborane at either high temperatures and short times or at ambient temperatures and long times" (p. 1).
Date:
December 19, 1956
Creator:
McDonald, Glen E.
System:
The UNT Digital Library
Geophysical and Geologic Field Measurements for the U16a.04 Tunnel, Nevada Test Site, Nevada with a Discussion of Geophysical Measurements in Horizontal Holes
This report summarizes the results of the U.S. Geological Survey geophysical and geological studies of the rock in the U16a.04 tunnel in the Nevada Test Site.
Date:
December 19, 1967
Creator:
Carroll, Roger D.; Ege, John R.; Cunningham, M. J.; Muller, D. C. & Way, R. J.
System:
The UNT Digital Library