UNT Libraries Government Documents Department - 23 Matching Results

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Stability and control characteristics at low speed of a 1/4-scale Bell X-5 airplane model: Longitudinal stability and control

Description: Report presenting an investigation of the low-speed longitudinal stability and control characteristics of a scale model of a Bell X-5 airplane design with various leading-edge slat and trailing-edge flap arrangements. A marked increase in stability with increasing sweep angle at low lift coefficients was noted. Results regarding the basic longitudinal characteristics, leading-edge slats, trailing-edge flaps, and longitudinal control are provided.
Date: March 14, 1950
Creator: Kemp, William B., Jr.; Becht, Robert E. & Few, Albert G., Jr.
Item Type: Refine your search to only Report
open access

Description and Investigation of a Dynamic Model of the XH-17 Two-Blade Jet Driven Helicopter

Description: Report presenting a description and results of an investigation of a model of the XH-17 two-blade, jet-powered helicopter. Tests were made with a standard configuration and with several modifications, including varying the size of blade counterweights, changing the control stiffness and chordwise bending stiffness of the blades, and varying the pylon and undercarriage damping and spring constants. Results regarding flutter testing, ground-vibration tests, and three-per-revolution rotor-blade un… more
Date: March 14, 1951
Creator: Brooks, George W. & Sylvester, Maurice A.
Item Type: Refine your search to only Report
open access

Wing-on and wing-off longitudinal characteristics of an airplane configuration having an thin unswept tapered wing of aspect ratio 3, as obtained from rocket-propelled models at Mach numbers from 0.8 to 1.4

Description: Report presenting flight tests at Mach numbers from 0.8 to 1.4 on three rocket-propelled general research models of airplane configurations. Two models had thin unswept tapered wings of aspect ratio 3 and hexagonal airfoil sections, two wings had different structural stiffness characteristics, and the third model had no wing. Results regarding the static and dynamic longitudinal stability, control, trim, and drag characteristics are provided.
Date: March 14, 1951
Creator: Gillis, Clarence L. & Vitale, A. James
Item Type: Refine your search to only Report
open access

Time Histories of the Aerodynamic Loads on the Vertical and Horizontal Tail Surfaces of a Jet-Powered Bomber Airplane During Sideslip Maneuvers at Approximately 20,000 Feet

Description: Report presenting time histories of the aerodynamic loads on the vertical and horizontal tail surfaces of a jet-powered bomber airplane (B-45A) in sideslip maneuvers. Information about maximum measured rudder and fin loads, maximum total vertical-tail load, horizontal-tail-load dissymmetry, maximum elevator loads, and elevator-load dissymmetry is provided.
Date: March 14, 1951
Creator: Cooney, T. V. & McGowan, William A.
Item Type: Refine your search to only Report
open access

A study of the characteristics of human-pilot control response to simulated aircraft lateral motions

Description: Report presents the results of studies made in an attempt to provide information on the control operations of the human pilot. These studies included an investigation of the ability of pilots to control simulated unstable yawing oscillations, a study of the basic characteristics of human-pilot control response, and a study to determine whether and to what extent pilot control response can be represented in an analytical form.
Date: March 14, 1952
Creator: Cheatham, Donald C.
Item Type: Refine your search to only Report
open access

Static Longitudinal Stability of a Tandem-Coupled Bomber-Fighter Airplane Configuration Proposed by All American Airways, Inc.

Description: "At the request of the Air Materiel Command an investigation was made in the Langley free-flight tunnel to determine the static longitudinal stability and control characteristics of models coupled together in a tandem configuration proposed by All American Airways, Inc. Force tests were made using 1/20-scale models of B-29 end F-80 airplanes to determine the effects of coupling the fighter to the tail of the bomber. The results of the investigation showed that for the bomber alone the aerodynam… more
Date: March 14, 1950
Creator: Hewes, Donald E.
Item Type: Refine your search to only Report
open access

Oxidation-resistance mechanism and other properties of molybdenum disilicide

Description: The outstanding oxidation resistance of molybdenum disilicide at 2400 F and above was found to depend on the formation of a protective siliceous coating which a-cristobalie has been identified. Molybdenum disilicide is not inherently resistant to oxidation and in powdered form burns at low temperatures.Melting and casting experiments have demonstrated the decomposition of the material at the melting point. The room-temperature modulus of elasticity has been determined and electric-resistivity d… more
Date: March 14, 1952
Creator: Maxwell, W. A.
Item Type: Refine your search to only Report
open access

Method for calculating the aerodynamic loading on an oscillating finite wing in subsonic and sonic flow

Description: A method is presented for calculating the loading on a finite wing oscillating in subsonic or sonic flow. The method is applicable to any plan form and may be used for determining the loading on deformed wings. The procedure is approximate and requires numerical integration over the wing surface.
Date: March 14, 1956
Creator: Runyan, Harry L. & Woolston, Donald S.
Item Type: Refine your search to only Report
open access

Portable Mercury Vapor Detector

Description: From abstract: "This report describes a functional mercury vapor detector which is a portable, self-contained, survey instrument, and had a minimum range from zero to two-tenths milligram of mercury per cubic meter of air."
Date: March 14, 1958
Creator: McMurray, C. S. & Redmond, J. W.
Item Type: Refine your search to only Report
open access

Ore Occurrence Study, Mesa 4-1/2 Mines, Lukachukai Mountains, Apache County, Arizona

Description: Abstract: Mine mapping of the tyuyamunite-type deposits In the Salt Wash member of the Jurassic Morrison formation of the Lukachukai Mountains, Apache County, Arizona revealed recognizable spatial relationships between ore mineralization and: fractured areas, sedimentary features, and interstitial carbonate.
Date: March 14, 1957
Creator: Beam, Thomas E.
Item Type: Refine your search to only Report
open access

Description of a Thermonuclear Reactor Based on the Use of a Layer of Relativistic Electrons to Confine and Heat the Plasma

Description: A long layer of rotating relativistic electrons was employed in a proposed scheme of a thermonuclear reactor to provide a closed pattern of magnetic field liens and to heat the plasma to fusion temperature. Parameters of a production machine and experimental model are presented. The general requirements for the plasma confinement at adequate density and temperature are summarized. Establishment of the electron layer is described. The equilibrium of the plasma under these conditions was investig… more
Date: March 14, 1957
Creator: Christofilos, N. C.
Item Type: Refine your search to only Report
open access

300 Area ``X`` Program, Basis ``B``

Description: Attached is a secret draft of 300 Area expansion for the proposed ``X`` Program (600 MWD level for indefinite period) made up of the following: (1) assumptions; (2) present facilities and to what extent inadequate; (3) description of proposed work; (4) advantages to be gained and justification for proposed work; (5) why existing or alternate facilities cannot be used; (6) estimate of cost; and (7) attachments.
Date: March 14, 1952
Creator: Wood, V. W.
Item Type: Refine your search to only Report
open access

Review and recommendations concerning the location of proposed additional separation plant East versus West Areas

Description: It is the purpose of this report to: Review the factors which should be considered in selecting either the 200 West Area or the 200 East Area of Hanford Works as the site for a proposed separations facility, particularly from the standpoint of economics, operating convenience, and assurance of continuity of production, and make recommendations as to the location of the proposed facility.
Date: March 14, 1952
Item Type: Refine your search to only Report
open access

The Evaluation of Air Samples Containing Thorium and Daughter Products

Description: Equations for the quantity of thorium daughters on an air sampler after various times of collection and decay are derived and evaluated. The most limiting assumption is the constant concentration over the sampling period. Applications of these equations to measurement of decay curves, alpha energy analysis and the simultaneous solution involving measurements at the three decay times are discussed.
Date: March 14, 1955
Creator: Healy, J. W.
Item Type: Refine your search to only Report
open access

Studies on the Hydraulic Characteristics of Purex Off-Gas Jets

Description: The design of the Purex Off-Gas Treatment Facility requires the use of new dissolver off-gas jets which will be installed in series with present jets in the Purex in-canyon "donut" jumpers. When the new jets are placed in operation, the motive air and steam supply services to the in-canyon jets will no longer be required and the in-canyon jets will become flow restrictions in the dissolver off-gas train. Calculated values of pressure drop across these "dead" jets at maximum off-gas rate varied … more
Date: March 14, 1956
Creator: Michels, L.R.
Item Type: Refine your search to only Report
open access

Neutron Irradiation of Sapphire (Al 2 O 3 )

Description: A centerless-ground, 0.25-in.-diam. by 0.75-in.-long sapphire single crystal exposed to an integrated thermal neutron flux of 2 x 10 19 nvt at a temperature of 350 deg C (660 deg F) did not change its dimensions appreciably simple beam, with slightly less force than was required to break a similar unirradiated rod. In a darkened room the irradiated sapphire begins to thermoluminesce noticeably at 280 deg C (535 deg F) and most of the amber or brown coloration produced by the pile exposure is re… more
Date: March 14, 1956
Creator: Wheeler, R.G.
Item Type: Refine your search to only Report
open access

High-Temperature Properties in Relation to Design

Description: The essential physical and mechanical properties of materials which enter into the design considerations of high-temperature systems have been outlined, and the relationship of these factors to the detailed design of structural members noted. Particular attention is given to the phenomenon of strain-cycling and relaxation, and several engineering devices wherein these effects can markedly influence design are mentioned. Techniques and apparatus for the measurement of strain-cycling and relaxati… more
Date: March 14, 1957
Creator: Weir, J. R.; Meghreblian, Robert V. (Robert Vartan) & Douglas, D. A.
Item Type: Refine your search to only Report
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