Technical Report Archive & Image Library (TRAIL) - 107 Matching Results

Search Results

Results: 1 - 24 next
open access

Aerodynamic and hydrodynamic characteristics of a proposed supersonic multijet water-based hydro-ski aircraft with a variable-incidence wing

Description: From Introduction: "The configuration described in this paper represents one approach to such an airplane and the results of the wind-tunnel and tank evaluations are presented. In the present investigation, the aerodynamic longitudinal characteristics over a Mach number range from 0.6 to 1.97 were obtained."
Date: October 23, 1957
Creator: Petynia, William W.; Hasson, Dennis F. & Spooner, Stanley H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analog computer study of some filtering, command-computer, and automatic-pilot problems connected with the attack phase of the automatically controlled supersonic interceptor

Description: From Summary: "Presented herein are the results of a study of some of the problems associated with the cross-roll filter, command computer, and g-limiter of an automatic interceptor system."
Date: October 3, 1957
Creator: Sherman, Windsor L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Analysis of the Effect of Several Parameters on the Stability of an Air-Lubricated Hydrostatic Thrust Bearing

Description: From Introduction: "The present investigation considers a simple nonrotating thrust bearing consisting of two round flat disks of finite diameter separated by a thin film of air. The nonlinear differential equations governing the motion of the bearing when disturbed were solved on a high-speed digital computing machine. In addition, these solutions provide a means for checking the validity of more simplified solutions (e.g., ref. 1)."
Date: October 1957
Creator: Roudebush, William H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Beta and Gamma Dose Rates From Terrestrially Distributed Sources

Description: Report that examines the dose rate of radiation in the air and in a test subject due to radioactive materials (uranium, thorium, and potassium) that are present in the ground. The test subject in these experiments is a water cylinder that is meant to receive radiation in a manner similar to a person.
Date: October 28, 1957
Creator: O'Brien, Keran; Lowder, Wayne M. & Solon, Leonard R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Blow-Out Velocities of Solutions of Hydrocarbons and Boron Hydride - Hydrocarbon Reaction Products in a 1 7/8-Inch-Diameter Combustor

Description: Combustion blow-out velocities were determined for JP-4 solutions containing: (1) 10 % ethylene - decaborane reaction product, (2) 10% and 20% acetylene - diborane reaction product, and (3) 5.5%, 15.7%, and 30.7% methylacetylene - diborane reaction product. These were compared with blow-out velocities for JP-4, propylene oxide, and neohexane and previously reported data for JP-4 solutions of pentaborane. For those reaction products investigated, the blow-out velocities at a fixed equivalence ra… more
Date: October 24, 1957
Creator: Morris, James F. & Lord, Albert M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chemical igniters for starting jet fuel - nitric acid rockets

Description: Report presenting experiments in a 200-pound-thrust jet fuel-nitric acid rocket with an axial-flow igniter employing the hypergolic alkyl thiosphosphite-nitric acid system. No combustion instability was observed in the igniter, but many of the main-stage runs exhibited low-frequency oscillations.
Date: October 8, 1957
Creator: Morrell, Gerald & Ladanyi, Dezso J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cyclotron Resonance Heating of a Deuterium Plasma

Description: Abstract: "The energy gained by a deuterium plasma, from a three megacycle per second radiofrequency field, was studied experimentally. A static magnetic field, in the form of a "mirror", was used. The coil of an rf resonant circuit, placed at the center of the machine produced a time-varying magnetic field parallel to the static field. This, in turn, induced an electrical field, in an azmuthal direction, which acted on the ions. When this was in synchronism with the cyclotron frequency, the io… more
Date: October 28, 1957
Creator: Chambers, Edmund S.; Lamb, William A. S. & Kippenhan, Dean O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Distribution of Elements in the Salt Wash Member of the Morrison Formation in the Jo Dandy Area, Montrose County, Colorado

Description: The following report covers a chemical study that was made of the Salt Wash member of the Morrison formation of Jurassic age in the Jo Dandy area, Montrose County, Colorado in 1954. The chemical study was made to investigate the distribution of elements in the host rocks with emphasis on the pattern of variation as related to the position of known ore bodies, and to determine average concentrations of some of the elements in the major rock types.
Date: October 1957
Creator: Newman, William L. & Elston, Donald P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Drop-size distribution for cross current breakup of liquid jets in airstreams

Description: Report presenting drop-size-distribution data obtained for liquid jets atomized by cross-stream injection from simple orifices into high-velocity airstreams. A high-speed camera and a sampling technique were combined to obtain data over ranges of injector, liquid, and airstream variables.
Date: October 1957
Creator: Ingebo, Robert D. & Foster, Hampton H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Boundary Solidity of Planing Lift Obtained in a High-Speed Water Jet With a Single Longitudinal Slot in Each Rigid Boundary

Description: Report discussing the hydrodynamic planing-lift forces of a model of a rectangular jet with several boundaries with slots in them in order to obtain varying boundary solidities. The lift coefficients at the different boundary solidities were compared to computed values from an equation. Information about the effects of boundary solidity, the level of optimum solidity, and the effects of speed is provided.
Date: October 23, 1957
Creator: Weinflash, Bernard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of fuel variables on carbon formation in turbojet-engine combustors

Description: Report presents the results of an investigation of the effects of fuel properties and of a number of fuel additives on combustion-chamber carbon deposition and exhaust-gas smoke formation in a single tubular turbojet-engine combustor. Limited tests were conducted with a number of the fuels in several full-scale turbojet engines to verify single-combustor data.
Date: October 23, 1957
Creator: Jonash, Edmund R.; Wear, Jerrold D. & Cook, William P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Ground Proximity on the Aerodynamic Characteristics of a Four-Engine Vertical-Take-Off-and-Landing Transport-Airplane Model With Tilting Wing and Propellers

Description: Note presenting an investigation to study the effect of ground proximity on the aerodynamic characteristics of a four-engine vertical-take-off-and-landing transport-airplane model with tilting wing and propellers. Tests were made with the wing at an angle of incidence of 90 degrees, the position used for vertical take-off or landing. Results regarding flow surveys and force tests are provided.
Date: October 1957
Creator: Newsom, William A., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of Initial Mixture-Temperature on Burning Velocity of Hydrogen-Air Mixtures With Preheating and Simulated Preburning

Description: Note presenting a determination of the effect of initial temperatures from about 300 to 700 degrees Kelvin on the laminar burning velocity of hydrogen-air mixtures from schileren photographs of open flames. The temperature was raised in two ways: preheating the hydrogen-air mixtures and simulated adiabatic preburning of part of the hydrogen so that initial temperatures of 600 to 700 degrees kelvin would be attained for the resulting mixtures of hydrogen, air, water vapor, and nitrogen.
Date: October 1957
Creator: Heimel, Sheldon
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of lubricant viscosity on rolling-contact fatigue life

Description: Report presenting a series of rolling-contact fatigue tests conducted in a bench rig at the Lewis laboratory. Four paraffin-base mineral oils of varying viscosity were used as lubricants. A continuous trend toward longer lift was observed with increasing lubricant viscosity over the range studied.
Date: October 1957
Creator: Carter, Thomas L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of extreme surface cooling on boundary-layer transition

Description: Report presenting an investigation to determine the combined effects of surface cooling, pressure gradient, nose blunting, and surface finish on boundary-layer transition. Data were obtained for various body shapes at Mach number 3.12 and a variety of Reynolds numbers. Results regarding the effect of extreme cooling, effect of pressure gradient, effect of blunting, effect of surface roughness, and roughness as case of transition reversal are provided.
Date: October 1957
Creator: Jack, John R.; Wisniewski, Richard J. & Diaconis, N. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of Extreme Surface Cooling on Boundary-Layer Transition

Description: Note presenting an investigation to determine the combined effects of surface cooling, pressure gradients, nose blunting, and surface finish on boundary-layer transition. Data were obtained for various body shapes at a Mach number of 3.12 and Reynolds numbers per foot as high as 15 x 10(exp 6). Results regarding the effect of extreme cooling, effect of pressure gradient, effect of blunting, effect of surface roughness, and roughness as cause of transition reversal are provided.
Date: October 1957
Creator: Jack, John R.; Wisniewski, Richard J. & Diaconis, N. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of wing-mounted external stores on the longitudinal and lateral handing qualities of the Douglas D-558-II research airplane

Description: Report presenting testing of the subsonic and transonic handling qualities of the Douglas D-558-II research airplane using several configurations of mid-semispan external stores in the altitude region of 20,000 to 40,000 feet. The configurations had an underslung pylon on each wing, pylons plus simulated 1000-pound bombs, and pylons with 150-gallon fuel tanks. Results regarding longitudinal stability and control characteristics, low-speed characteristics, and lateral stability and control chara… more
Date: October 28, 1957
Creator: Fischel, Jack; Darville, Robert W. & Reisert, Donald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Elliptic Cones Alone and with Wings at Supersonic Speeds

Description: Note presenting force and moment characteristics for elliptic cones, which have been experimentally determined for Mach numbers of 1.97 and 2.94. The results indicate that there are distinct aerodynamic advantages to the use of elliptic cones. Results regarding experimental force and moment characteristics, comparisons of theoretical and experimental pressure distributions, forces, and moments, and visual observations of flow over models are provided.
Date: October 1957
Creator: Jorgensen, Leland H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental Investigation of Cermet Turbine Blades in an Axial-Flow Turbojet Engine

Description: Note presenting testing on cermet blades in an axial-flow engine, which demonstrated that blade life of 150 hours at maximum turbine speed and exhaust temperature could be obtained. Fourteen tests were made with six test blades in the turbine rotor; two tests were made with only two cermet blades in operation. Results indicated that the two probably causes for the blades are impact and fatigue.
Date: October 1957
Creator: Morgan, William C. & Deutsch, George C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental investigation of effects of simulated nacelles and wing-root freedoms on supersonic flutter characteristics of a cambered, modified, swept, tapered wing

Description: Report presenting an investigation to determine the effects of simulated engine nacelles and wing-root freedoms on the flutter characteristics of a cambered, modified, swept, tapered, semispan wing through a range of Mach numbers. Wings were tested with and without nacelles and with the model restrained, free to roll, and free to translate in the vertical direction. Results regarding the effect of nacelles, flutter boundary, and effect of wing-mount freedom are provided.
Date: October 16, 1957
Creator: Hanson, Perry W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental investigation of effects of simulated nacelles and wing-root freedoms on supersonic flutter characteristics of a cambered, modified, swept, tapered wing

Description: Report presenting an experimental investigation made in the supersonic flutter tunnel to determine the effects of simulated engine nacelles and wing-root freedoms on the flutter characteristics of a cambered, modified, swept, tapered, semispan wing over a range of Mach numbers. Results regarding the effect of nacelles, flutter boundary, and effect of wing-mount freedom are provided.
Date: October 16, 1957
Creator: Hanson, Perry W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental investigation of lift, drag, and pitching moment of five annular airfoils

Description: From Summary: "An investigation was carried out in the Langley stability tunnel to determine the lift, drag, and pitching-moment characteristics of a family of annular airfoils. The five annular airfoils had equal projected areas but had varying chords and diameters which covered aspect ratios of 1/3, 2/3, 1.0, 1.5, and 3.0. The results showed that the effects of aspect ratio on the aerodynamic-center location were similar for annular and unswept airfoils and that annular airfoils had larger ma… more
Date: October 1957
Creator: Fletcher, Herman S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental Investigation of Transpiration Cooling for a Turbulent Boundary Layer in Subsonic Flow Using Air as a Coolant

Description: Note presenting experiments performed to determine the effect of injecting coolant air through a porous sintered bronze plate into a constant-area tunnel through which hot air was flowing. The boundary layer was turbulent over the porous plate for all runs. Results regarding constant wall temperature, constant mass flow, and variation of wall temperature with coolant-flow rate are provided.
Date: October 1957
Creator: Brunk, William E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen