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Investigation of Drag and Static Longitudinal and Lateral Stability Characteristics of a 1/15-Scale Model of the Grumman F11F-1F Airplane at Mach Numbers of 1.56, 1.76, 2.06, and 2.53

Description: Report presenting an investigation in the Langley Unitary Plan wind tunnel to determine the drag and static longitudinal and lateral stability characteristics of a model of the Grumman F11F-1F airplane at Mach numbers 1.56, 1.76, 2.06, and 2.53. The investigation included the effects on performance and stability of modifications, including a wing-root leading-edge fillet and horizontal tails with negative dihedral of 10 degrees and 30 degrees. Information regarding net external minimum drag coe… more
Date: November 30, 1956
Creator: Turner, Kenneth L. & Fournier, Roger H.
Partner: UNT Libraries Government Documents Department
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Methods for obtaining desired helicopter stability characteristics and procedures for stability predictions

Description: Part I of this report presents a brief review of methods available to the helicopter designer for obtaining desired stability characteristics by modifications to the airframe design. The discussion is based on modifications made during the establishment of flying-qualities criteria and includes sample results of theoretical studies of additional methods. The conclusion is reached that it is now feasible to utilize combinations of methods whereby stability-parameter values are realized which in … more
Date: November 30, 1956
Creator: Gustafson, F. B. & Tapscott, Robert J.
Partner: UNT Libraries Government Documents Department
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Progress Report No. 43 for the period September 1, 1956 to November 30, 1956

Description: This is the forty-third progress report of the Laboratory for Nuclear Science at the Massachusetts Institute of Technology. Progress during the period September 1, 1956 through November 30, 1956 is reported.
Date: November 30, 1956
Creator: {{{name}}}
Partner: UNT Libraries Government Documents Department
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Purex Plant L Cell Plutonium concentration flowsheet revision

Description: The reference letter documented the plutonium concentration flowsheet in use at that time and proposed that this flowsheet be used for the scope design basis of replacement equipment. A study of the application of the reference flowsheet to the proposed remote package design (1) indicated that attainment of a plant capacity factor of four would be doubtful. This letter outlines a flowsheet reconciling process and equipment limitations and capable of a capacity factor of four.
Date: November 30, 1956
Creator: Irish, E. R. & Swift, W. H.
Partner: UNT Libraries Government Documents Department
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Design considerations for a pulse column system

Description: From objectives: "The objectives of this investigation were to evaluate the hydraulic forces in the pulse column, and determine their effects on pulse column design."
Date: November 29, 1956
Creator: Cooper, V. R. & Groot, C.
Partner: UNT Libraries Government Documents Department
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Free-flight investigation at Mach numbers between 0.5 and 1.7 of the zero-lift rolling effectiveness and drag of various surface, spoiler, and jet controls on an 80 degree delta-wing missile

Description: Report presenting a free-flight investigation of the zero-lift rolling effectiveness and drag of 18 roll-control arrangements on a cruciform 80 degree delta-wing missile-like configuration over a range of Mach numbers. Testing was made of deflected surfaces, spoilers, and inlet-air-jet devices to give evidence to simple theory for deflected surfaces and to determine some effects of chordwise location for spoilers and blowing direction and spanwise location for jets near the wing trailing edge. … more
Date: November 29, 1956
Creator: Schult, Eugene D.
Partner: UNT Libraries Government Documents Department
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Investigation at Supersonic Speeds of the Effects of Bomb-Bay Configuration Upon the Aerodynamic Characteristics of Fuselages With Noncircular Cross Sections

Description: Memorandum presenting an investigation in the 9-inch supersonic tunnel to ascertain the lift, drag, and pitching moments of typical body-bomb-bay configurations with and without the bomb. The bodies had elliptical, triangular, and teardrop cross sections. Results regarding effects of angle-of-attack variation and effects of Mach number variation are provided.
Date: November 29, 1956
Creator: Rainey, Robert W.
Partner: UNT Libraries Government Documents Department
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Investigation of separated flows in supersonic and subsonic streams with emphasis on the effect of transition

Description: Report presents the results of experimental and theoretical research conducted on flow separation associated with steps, bases, compression corners, curved surfaces, shock-wave boundary-layer reflections, and configurations producing leading-edge separation. Results were obtained from pressure-distribution measurements, shadowgraph observations, high-speed motion pictures, and oil-film studies. The maximum scope of measurement encompassed Mach numbers between 0.4 and 3.6, and length Reynolds nu… more
Date: November 29, 1956
Creator: Chapman, Dean R.; Kuehn, Donald M. & Larson, Howard K.
Partner: UNT Libraries Government Documents Department
open access

Pile power raises after Project CG-558

Description: The document presents powers to which the piles are predicted to be limited by slug ruptures and outlines two plans for raising power after 558. These plans are coordinated in the sense that results from one area are used to make operating plans for other areas.
Date: November 29, 1956
Creator: Music, J. F.
Partner: UNT Libraries Government Documents Department
open access

Preliminary investigation of Guy alloy as a turbojet-engine bucket material for use at 1650 degrees F

Description: As-cast buckets of Guy alloy, a cast nickel-base material, were run in a J33-9 turbojet engine for cycles of 15 minutes at rated speed and 5 minutes at idle speed. Stress rupture, impace and engine-performance data indicate that Guy alloy may be considered for bucket use at a temperature of 1650 degrees F. Ductility and impact strength of Guy alloy is limited but appears to be adequate for bucket applications.
Date: November 29, 1956
Creator: Signorelli, R. A.; Johnston, J. R. & Weeton, J. W.
Partner: UNT Libraries Government Documents Department
open access

Run Summary of HRT-CP-5

Description: No Description Available.
Date: November 29, 1956
Creator: Winget, R. H.
Partner: UNT Libraries Government Documents Department
open access

A Semigraphical Method for the Determination of the Rolling Characteristics of Rolleron-Equipped Missiles

Description: "A semigraphical analysis method has been devised to evaluate the effectiveness and dynamic stability of rolleron roll-rate dampers on missile configurations. The necessary charts, equations, and the analysis procedure have been presented. The greatest utility of these charts and of the method outlined is that, once a point on the charts has been established at a given flight condition, if the response is not acceptable than the necessary modifications to the parameters of the system are readil… more
Date: November 29, 1956
Creator: Nason, Martin L.
Partner: UNT Libraries Government Documents Department
open access

Static lateral and directional stability and control characteristics of a 1/15-scale model of the Grumman F11F-1 airplane at Mach numbers of 1.41, 1.61, and 2.01: TED No. NACA DE 390

Description: Report presenting an investigation in the 4- by 4-foot supersonic pressure tunnel to determine the static lateral and directional stability and control characteristics of a scale model of the Grumman F11F-1 airplane at Mach numbers of 1.41, 1.61, and 2.01. The complete model and various combinations of component parts were tested as well as various configuration changes including modified bodies and vertical tails. Results regarding the static lateral and directional stability, lateral and dire… more
Date: November 29, 1956
Creator: Robinson, Ross B. & Driver, Cornelius
Partner: UNT Libraries Government Documents Department
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Thermal Stability of Decaborane and of a Commercial Ethyl Decaborane (HEF-3) in the Range 202 Degrees to 252 Degrees C

Description: Report discussing an investigation of the thermal stabilities of a commercial grade of ethyl decaborane and decaborane at two temperatures. Equations developed from the results of the experiment are also provided. Ethyl decaborane was found to be more stable to pyrolysis than pentaborane but less stable than decaborane.
Date: November 29, 1956
Creator: McDonald, G. E.
Partner: UNT Libraries Government Documents Department
open access

Centrifugal Casting for Plutonium and Plutonium-Uranium Plates

Description: The objective of this investigation was to determine the feasibility of centrifugal casting to produce fuel element plates suitable for use in a power reactor. Preliminary investigations involving the centrifugal casting of metal plates suitable for use in a power reactor proved to be successful. Lead plates cast at medium speeds contained very few voids and exhibited a surface which conformed very closely to that of the mold.
Date: November 28, 1956
Creator: Quinlan, F. B. & Tverberg, J. C.
Partner: UNT Libraries Government Documents Department
open access

Effect of R.F. System on Betatron Oscillations

Description: The change in betatron frequency due to the focusing action of the radiofrequency cavities is calculated. It is found that at injection the fractional change in radial betatron frequency for particles with small phase oscillations is given by -0.025V, where V is the maximum r-f voltage per turn in Mev. There is an equal and opposite change in the vertical betatron frequency. Also it is proven, in a general manner, that the damping rate of the betatron oscillations is independent of the nature o… more
Date: November 28, 1956
Creator: Robinson, Kenneth W.
Partner: UNT Libraries Government Documents Department
open access

Run Summary of Run HRT-CP-3 and 4

Description: No Description Available.
Date: November 28, 1956
Creator: Winget, R. H.
Partner: UNT Libraries Government Documents Department
open access

Analysis of turbojet and ram-jet engine cycles using various fuels

Description: From Introduction: "These data have been collected for presentation in this report to illustrate the performance of turbojet and ram-jet cycles utilizing several of the more promising high-energy fuels. Results are presented in terms of engine over-all efficiency and thrust per pound of airflow as functions of flight Mach number."
Date: November 27, 1956
Creator: Wilcox, E. Clinton; Weber, Richard J. & Tower, Leonard K.
Partner: UNT Libraries Government Documents Department
open access

Compilation and Analysis of U.S. Turbojet and Ram-Jet Engine Characteristics

Description: Report presenting a compilation of sea-level static and flight-performance data for existing and designed U.S. axial-flow turbojet and ram-jet engines. Factors considered include engine size, performance, and weight, and actual and theoretical performances are compared.
Date: November 27, 1956
Creator: Cesaro, Richard S. & Walker, Curtis L.
Partner: UNT Libraries Government Documents Department
open access

Corrosion of Stainless Steel, Titanium, and Tantalum in Plutonium - Nitric Acid Solutions

Description: The letter E. R. Irish/W. H. Swift to R.E. Burns and H. H. Hopkins, dated August 15, 1956, subject Plutonium Concentration Problems, requested information on corrosion of stainless steel, titanium, and tantalum in plutonium nitrate-nitric acid solution, with and without sulfate ion. Experimental conditions and results of tests designed to yield the requested information are given below.
Date: November 27, 1956
Creator: Brunstad, A.
Partner: UNT Libraries Government Documents Department
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