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A study of the use of various high-lift devices on the horizontal tail of a canard airplane model as a means of increasing the allowable center-of-gravity travel

Description: Report presenting an investigation to study the use of various high-lift devices on the horizontal tail of a canard airplane model as a means of increasing the allowable center-of-gravity travel. The results indicated that the large increases in allowable center-of-gravity travel could be obtained using the devices. Results regarding the basic aerodynamic data, effect of tail configuration on the allowable center-of-gravity travel, and a comparison of measured and predicted values of the allowa… more
Date: January 21, 1953
Creator: Johnson, Joseph L., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Analysis of a Nuclear Powered Supercritical-Water Cycle for Aircraft Propulsion

Description: Memorandum presenting an analysis to indicate the feasibility of the supercritical water compressor jet cycle for nuclear powered aircraft. Performance values of the cycle are given for a range of design-point engine operating conditions and subsonic flight conditions.
Date: January 19, 1953
Creator: Karp, Irving M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Wind-Tunnel Investigation at Subsonic and Supersonic Speeds of a Model of a Tailless Fighter Airplane Employing a Low-Aspect-Ratio Swept-Back Wing-Stability and Control

Description: Memorandum presenting the results of a wind-tunnel investigation of the static stability and control characteristics of a model of a fighter airplane employing a low-aspect-ratio swept-back wing with trailing-edge elevons, a swept-back vertical tail, but no horizontal tail. The results indicated that, for the test conditions at which the investigation was conducted, the model, with elevons undeflected, was longitudinally and directionally stable.
Date: January 12, 1953
Creator: Smith, Willard G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Drawbar Upstream Location on Air Velocity Distribution at the Inlet Face of Reactor Segment Designed by the General Electric Company

Description: The results of flow tests on a drawbar for the General Electric reactor segment test in the MTR are reported. The drawbar is a T-shaped obstruction located as close to the upstream face of the reactor test segment as possible without serious flow distortion ; the drawbar is required for instrumentation leads and segment insertion and removal in the MTR. The effect of drawbar upstream distance on velocity distribution across the segment face is evaluated for several Reynolds numbers.
Date: January 1953
Creator: Nagey, T. F. & Sams, E. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analytical investigation of icing limit for diamond-shaped airfoil in transonic and supersonic flow

Description: From Introduction: "The results presented herein were calculated for a symmetrical diamond airfoil at zero angle of attack for a range of airfoil-thickness ratios from 0.02 to 0.10, pressure altitude from sea level to 45,000 feet, and free-stream static temperatures to -.40^o F."
Date: January 1953
Creator: Callaghan, Edmund E. & Serafini, John S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Study of the Application of Power-Spectral Methods of Generalized Harmonic Analysis to Gust Loads on Airplanes

Description: Note presenting an examination of the applicability of some results from the theory of generalized harmonic analysis (or power-spectral analysis) to the analysis of gust loads on airplanes in continuous rough air. The general relations for linear systems between power spectrums of a random input disturbance and an output response are used to relate the spectrum of airplane load in rough air to the spectrum of atmospheric gust velocity.
Date: January 1953
Creator: Press, Harry & Mazelsky, Bernard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Estimated power reduction by water injection in a nonreturn supersonic wind tunnel

Description: Report presenting a simplified analysis to estimate the extent to which the pressure ratio and power of a nonreturn supersonic wind tunnel operating in the low supersonic Mach number range can be reduced by the evaporation of water injected into the diffuser. It appears to be possible to reduce the power by as much as 20 percent for a typical example of a tunnel operating at Mach number 1.4.
Date: January 1953
Creator: Cooper, Morton & Sevier, John R., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Calculation and Measurement of Normal Modes of Vibration of an Aluminum-Alloy Box Beam With and Without Large Discontinuities

Description: Note presenting calculations of the lowest normal modes of vibration of three aluminum-alloy box beams using a matrix iteration method. An experimental confirmation of the theory is also carried out and includes a determination of natural frequencies and determination of normalized mode shapes are provided.
Date: January 1953
Creator: Smith, Frank C. & Howard, Darnley M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On the Stability of the Laminar Mixing Region Between Two Parallel Streams in a Gas

Description: Note presenting a study of the stability of the mixing of two streams both for the interest in the problem and for clarifying certain points in the basic stability theory. Results show that when the relative speed of the two parallel streams exceeds the sum of their velocities of sound, subsonic oscillations cannot occur and the mixing region can be expected to be stable with respect to small disturbances.
Date: January 1953
Creator: Lin, C. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Effect of Initial Curvature on the Strength of an Inelastic Column

Description: From Summary: "The reduction in column strength due to initial curvature is determined theoretically for a pin-ended idealized inelastic H-section column. Equations relating load and lateral deflection are obtained which permit a systematic variation in the parameters representing the stress-strain properties, column proportions, and initial curvature of the column. The results, presented graphically, show the effect of various combinations of these parameters on column strength."
Date: January 1953
Creator: Wilder, Thomas W., III; Brooks, William A., Jr. & Mathauser, Eldon E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Effect of Longitudinal Stiffeners Located on One Side of a Plate on the Compressive Buckling Stress of the Plate-Stiffener Combination

Description: "The problem of buckling under uniform compression of flat, simply supported, rectangular plates equally spaced longitudinal stiffeners on one side of the plate is investigated. For the case of a plate with one, two, or infinitely many stiffeners, the analysis yields expressions for the effective moment of inertia of the stiffeners that can be used in conjunction with the buckling charts previously presented in NACA TN 1825" (p. 1).
Date: January 1953
Creator: Seide, Paul
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On Traveling Waves in Beams

Description: Note presenting the basic equations of Timoshenko for the motion of vibrating non-uniform beams, which allow for effects of transverse shear deformation and rotary inertia, in several forms, including one in which the equations are written in the directions of the characteristics. Numerical traveling-wave solutions are obtained for some elementary problems of finite uniform beams for which the propagation velocities of bending and shear discontinuities are taken to be equal.
Date: January 1953
Creator: Leonard, Robert W. & Budiansky, Bernard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Planing Characteristics of Two v-Shaped Prismatic Surfaces Having Angles of Dead Rise of 20 Degrees and 40 Degrees

Description: "The principal planing characteristics have been obtained for two V-shaped prismatic surfaces having angles of dead rise of 20 degrees and 40 degrees. The load, wetted lengths, resistance, center-of-pressure location, and limited drag data are presented for speed coefficients up to 25.0, beam-loading coefficients from 0.85 to 87.33, keel-wetted-length-beam-ratios up to approximately 8.0, and trims up to 30 degrees. The data indicate that, for a given condition of load, speed, and trim, the wett… more
Date: January 1953
Creator: Chambliss, Derrill B. & Boyd, George M., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On the Use of a Damped Sine-Wave Elevator Motion for Computing the Design Maneuvering Horizontal-Tail Load

Description: Note presenting a damped sine-wave elevator motion used as a basis for computing the design maneuvering load on the horizontal tail. The results indicated that the maneuvering tail-load variation computed by operational methods with the assumed damped sine-wave elevator motion agreed closely with the loads computed by a method currently used by the US Air Force.
Date: January 1953
Creator: Sadoff, Melvin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Combined Effect of Damping Screens and Streams Convergence on Turbulence

Description: Note presenting an analysis of the combined effect of a series of damping screens followed by an axisymmetric-stream convergence on the mean-square fluctuation-velocity intensities, scales, correlations, and one-dimensional spectra of a turbulence field convected by a main stream. Numerical results for the statistical quantities describing the turbulence field downstream of a screen-contraction configuration are obtained for the case of upstream isotropic turbulence.
Date: January 1953
Creator: Tucker, Maurice
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Digital Automatic Multiple Pressure Recorder

Description: Note presenting a machine which will automatically measure and record 100 pressures in a range from 5 to 65 inches of mercury, in approximately 2.5 minutes, to an accuracy of 0.1 inch of mercury. The method used is to compare the unknown pressures with a scanning pressure whose value at any instant is known in digitalized form.
Date: January 1953
Creator: Coss, Bert A.; Daykin, D. R.; Jaffe, Leonard & Sharp, Elmer M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Theoretical investigation of the longitudinal response characteristics of a swept-wing fighter airplane having a pitch-attitude control system

Description: Report presenting a theoretical analysis made of a pitch-attitude control system as applied to a swept-wing fighter airplane. The system is investigated with and without pitch-rate feedback. The effects of varying gain settings, Mach number, altitude, and variations of elevator deflection, normal acceleration, and flight path are provided.
Date: January 1953
Creator: Stokes, Fred H. & Matthews, J. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reflection of Weak Shock Wave From a Boundary Layer Along a Flat Plate 2: Interaction of Oblique Shock Wave With a Laminar Boundary Layer Analyzed by Differential-Equation Method

Description: Note presenting an investigation of the interaction of an oblique shock with a laminar boundary layer in a compressible supersonic stream. This report is a complement to previous report and uses the differential equation method.
Date: January 1953
Creator: Kuo, Yung-Huai
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Power-off flare-up tests of a model helicopter rotor in vertical autorotation

Description: Report presenting the results of an experimental investigation of the problem of reducing the descending velocity of a helicopter model in steady vertical autorotation by expending the kinetic energy of the rotor in a collective-pitch flare. Test data were obtained over a wide range of operating conditions from a freely falling model rotor restrained laterally by a guide wire. Results regarding justification of initial conditions, effect or rate of change of blade pitch angle, effect of final b… more
Date: January 1953
Creator: Slaymaker, S. E. & Gray, Robin B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Behavior in pure bending of a long monocoque beam of circular-arc cross section

Description: From Summary: "An analysis is made of the behavior under a loading of pure bending moment of a thin, infinitely long, pure-monocoque beam having a constant, doubly symmetric, circular-arc cross section. Bending moments, deflections, and stresses are obtained. The analysis shows a nonlinear behavior in bending which leads ultimately to a maximum amount and instability."
Date: January 1953
Creator: Fralich, Robert W.; Mayers, J. & Reissner, Eric
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of Gases Evolved During Firing of Vitreous Coatings on Steel

Description: Note presenting an investigation of the gases evolved during the firing of vitreous coatings. The scope of the investigation included an examination of gas evolution with a microscope while specimens were being fired, examinations of fired specimens for changes in bubble structure with firing time, examination of changes in normal gas evolution when water-free enamels were used, analysis with the mass spectrometer of gases trapped in the bubble structure, determination of the source of carbon g… more
Date: January 1953
Creator: Moore, Dwight G. & Mason, Mary A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Icing protection for a turbojet transport airplane : heating requirements methods of protection, and performance penalties

Description: Report analyzing and discussing the problems associated with providing icing protection for the critical components of a typical turbojet transport airplane operating over a range of probable icing conditions. Heating requirements for several thermal methods of protection are evaluated and the airplane performance penalties associated with providing protection from various energy sources are provided.
Date: January 1953
Creator: Gelder, Thomas F.; Lewis, James P. & Koutz, Stanley L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reflection of a Weak Shock Wave From a Boundary Layer Along a Flat Plate 1: Interaction of Weak Shock Waves With Laminar and Turbulent Boundary Layers Analyzed by Momentum-Integral Method

Description: Note presenting an investigation of the phenomena encountered when a plane oblique shock wave is incident upon the boundary layer of a flat plate. The flow field was divided into a viscous layer near the wall and a supersonic potential outer flow. With the outer flow determined, boundary-layer growth and pressure distribution were computed and results for the laminar cases were obtained and provided.
Date: January 27, 1953
Creator: Ritter, Alfred & Kuo, Yung-Huai
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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