320
320
May 21, 2011
05/11
by
Kuhn, Pau
texts
eye 320
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comment 0
Extensive strain-gage measurements were made chiefly on the tension side of five small rectangular box beams constructed of sheet duralumin. The main conclusion was that within the test range the tension cover may be considered as being fully effective but that at any given point on the beam there may be unaccountable variations of 5 percent from the calculated stresses on the thicker sheets tested (0.044 and 0.023 inch) and of 10 percent or more on the thinnest sheet tested (0.014 inch).
Topics: PRESSURE DISTRIBUTION - FUSELAGES, FUSELAGES - WIND TUNNEL TESTS (PRESSURE DISTRIBUTION)
205
205
Jun 19, 2010
06/10
by
Anufriyev, A. N.; Kolpashnikov, A. I
texts
eye 205
favorite 0
comment 0
Pressure distribution on metal rolls during rolling process
Topics: METAL WORKING, PRESSURE DISTRIBUTION, ROLLING, METAL WORKING, PRESSURE DISTRIBUTION, ROLLING
1,363
1.4K
Jun 17, 2010
06/10
by
Czarnecki, K. R.; Lord, D. R
texts
eye 1,363
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comment 0
Performance test data for pressure distributions over 60 deg delta wing at Mach 1.61 and 2.01
Topics: DELTA WINGS, MACH NUMBER, PERFORMANCE TESTS, PRESSURE DISTRIBUTION, DELTA WING, PRESSURE...
281
281
May 21, 2011
05/11
by
Wu, Chung-Hua; Brown, Curtis
texts
eye 281
favorite 0
comment 0
No Abstract Available
Topics: PRESSURE DISTRIBUTION - WING TIPS, PRESSURE DISTRIBUTION - WINGS, RECTANGULAR, AIRFOILS, CIRCULAR -...
245
245
Jul 10, 2010
07/10
by
MOROZ, V
texts
eye 245
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comment 0
THE PROPERTIES OF MARS AS DETERMINED BY THE SOVIET AND AMERICAN SPACE PROBES ARE REVIEWED. GENERAL INFORMATION IS PRESENTED ON THE SURFACE CHARACTERISTICS, THE COMPOSITION OF THE ATMOSPHERE, THE NATURE OF THE SURFACE, AND THE QUESTION OF THE MAGNETIC FIELD IN THE VICINITY OF MARS. BRIEF MENTION IS MADE OF THE INSTRUMENTS EMPLOYED BY THE PROBES IN STUDY OF THE PLANET.
Topics: BRECCIA, PETROLOGY, STRATIGRAPHY, PRESSURE DISTRIBUTION, SHOCK WAVE PROFILES
333
333
May 21, 2011
05/11
by
Cohen, Dori
texts
eye 333
favorite 1
comment 0
No Abstract Available
Topics: COMPRESSORS, CENTRIFUGAL, IMPELLERS, DIFFUSERS, VANELESS, PRESSURE DISTRIBUTION - DIFFUSERS
In this current work, study has been conducted on the shell and tube heat exchanger. CFD was used to carry out the analysis of this heat exchanger. Fluent software was used to project the pressure distribution. The effectiveness of base fluid and nano fluid was simulated and compared. The base fluid used was water and nano fluid used for the analysis was Al 2 O 3 . Rate of heat transfer was inspected. It was established from the results that Al 2 O 3 was more effective as compared to base...
Topics: STHE, Fluent, Pressure Distribution, ANSYS, Viscosity Distribution & Heat.
In this research work, an experimental investigation of surface static pressure distributions on octagonal cylinder was conducted. The test was conducted in an open circuit wind tunnel at a Reynolds number of 4.13 x 104 based on the face width of the cylinder across the flow direction in a uniform flow velocity of 13.2 m/s. At first experiment the test was carried out on a single cylinder at various angles of attack from 0° to 50° at a step of 10°. The surface static pressures at the...
Topics: Wind Load, Octagonal Cylinder, Static Pressure Distribution, Wind Tunnel
444
444
Jun 1, 2011
06/11
by
Jones, M. G.; Parrott, T. L.; Watson, W. R
texts
eye 444
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Typical acoustic liners used in current aircraft inlets and aft-fan ducts consist of some type of perforated facesheet bonded to a honeycomb core. A number of techniques for determining the acoustic impedance of these locallyreacting liners have been developed over the last five decades. In addition, a number of models have been developed to predict the acoustic impedance of locallyreacting liners in the presence of grazing flow, and to use that information together with aeroacoustic...
Topics: PLANING, SEAPLANES, FLOATS, PRESSURE DISTRIBUTION, FROUDE NUMBER, ASPECT RATIO
975
975
May 6, 2010
05/10
by
Church, J. D.; Taylor, N. L
texts
eye 975
favorite 0
comment 0
Pressure study of scale model xsm-64a navaho missile and booster at supersonic speeds
Topics: ANGLE OF ATTACK, SCALE MODEL, SUPERSONIC SPEED, BOOSTERS, NAVAHO MISSILE, PRESSURE DISTRIBUTION,...
392
392
Jun 18, 2010
06/10
by
Terry, J. E
texts
eye 392
favorite 0
comment 0
Convective heat transfer and pressure distribution measurements on lifting blunt cone reentry body
Topics: BLUNT BODIES, LIFTING BODY, PRESSURE DISTRIBUTION, CONES, CONVECTIVE HEAT TRANSFER, LIFTING BODIES,...
485
485
May 6, 2010
05/10
by
Huston, R. J.; Winston, M. A
texts
eye 485
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comment 0
Propeller slipstream effects as determined from wing pressure distribution of a large-scale six-propeller vtol model at static thrust
Topics: ANGLE OF ATTACK, STATIC THRUST, VTOL AIRCRAFT, WING, PRESSURE DISTRIBUTION, PROPELLER SLIPSTREAMS,...
294
294
May 27, 2011
05/11
by
Salmi, Reino J
texts
eye 294
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comment 0
A preliminary investigation of a simple 5 deg conical-flow expander was made to determine the feasibility of using this type of device to increase the Mach number in the test section of a supersonic wind tunnel. The inlet-to-exit area ratio of the nozzle was that required to increase one-dimensional flow from a Mach number of 3.88 to 5.5. The Mach numbers obtained at the expander exit varied from about 5.1 at the centerline to about 5.4 near the walls. No difficulty in operation of the main...
Topics: DEFORMATION, HYSTERESIS, MEMBRANES, FATIGUE (MATERIALS), ELASTIC PROPERTIES, PRESSURE DISTRIBUTION,...
Journal of Research of the National Bureau of Standards
Topics: Analysis, bouyancy, laminar flow, plume, pressure distribution, streamlines, temperature...
170
170
Jul 12, 2010
07/10
by
Parsons, C. L
texts
eye 170
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comment 0
The results of three generations of satellite-borne radar altimetry experiments are summarized. The diverse measurements possible from this instrument are shown to be directly applicable to studies of the importance of the oceans in climate. The radar altimeter has unique value for investigations seeking knowledge of the interconnections between ocean dynamics, heat and momentum transfer across the air-sea interface, sea ice extent, and polar ice sheet thickness.
Topics: ELLIPSOIDS, PRESSURE DISTRIBUTION, TRANSLATIONAL MOTION, HYDRODYNAMICS, MATHEMATICAL MODELS,...
A pressure survey of the cavity (plenum chamber) was conducted on the XR-3 Surface Effect Ship (SES) Testcraft. The lov/est pressures were observed at 15 knots, and the highest pressures at 21 knots. Pressure variations with velocity were observed to be similar in all cases, with a pressure decrease from 12 to 15 knots, an increase from 15 to 21 knots, a fluctuation and slight decrease from 21 to 24 knots, and a decrease from 2.U- to 26.5 knots. All pressures have been plotted to show...
Topics: Aeronautics, XR-3 Surface Effect Ship Test craft Pressure Distribution
265
265
Jun 18, 2010
06/10
by
Czarnecki, K. R.; Lord, D. R
texts
eye 265
favorite 0
comment 0
Supersonic pressure distributions for tip and trailing edge controls on 60 deg delta wing
Topics: DELTA WINGS, TRAILING EDGE, WING TIP CONTROL, MACH NUMBER, PRESSURE DISTRIBUTION, SUPERSONIC FLOW,...
553
553
Jun 13, 2011
06/11
by
Krueger, Ronald; Minguet, Pierre J
texts
eye 553
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comment 0
Interlaminar fracture mechanics has proven useful for characterizing the onset of delaminations in composites and has been used with limited success primarily to investigate onset in fracture toughness specimens and laboratory size coupon type specimens. Future acceptance of the methodology by industry and certification authorities however, requires the successful demonstration of the methodology on structural level. For this purpose a panel was selected that was reinforced with stringers....
Topics: NEURAL NETS, OPTIMIZATION, VECTORS (MATHEMATICS), AIRFOILS, PRESSURE DISTRIBUTION, PATENTS,...
1,373
1.4K
Jun 20, 2010
06/10
by
Romberg, G. F
texts
eye 1,373
favorite 0
comment 0
Wind tunnel data on pressure distributions for S-IB stage fins and tail area of Saturn IB VEHICLE - correlation tables
Topics: FINS, TAIL SURFACE, PRESSURE DISTRIBUTION, SATURN 1B LAUNCH VEHICLES, TAIL SURFACES, WIND TUNNEL...
In investigation aims to analyse the effect of transverse surface roughness on the squeeze film performance between porous rectangular plates. The associated differential equation is stochastically averaged making use of stochastic averaging method of Christensen and Tonder for transverse surface roughness. The equation is solved with appropriate boundary conditions to obtain the pressure and consequently the load bearing. The graphical results suggest that the bearing suffers because of...
Topics: Load carrying capacity, Porosity, Pressure distribution, Reynolds equation, Surface roughness
293
293
Jun 18, 2010
06/10
by
Phelps, E. R
texts
eye 293
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comment 0
Pressure distribution at supersonic speeds on conically cambered wing with and without pylon mounted engine nacelles
Topics: CAMBERED WINGS, NACELLE, PRESSURE DISTRIBUTION, PYLON MOUNTING, SUPERSONIC SPEED, CONICAL CAMBER,...
223
223
May 6, 2010
05/10
by
Kussoy, M
texts
eye 223
favorite 0
comment 0
Local pressure distribution on a blunt delta wing
Topics: AFTERBODIES, PRESSURE DISTRIBUTION, TUNING FORK GYROSCOPE, ANGLE OF ATTACK, BLUNT BODIES, DELTA...
873
873
May 6, 2010
05/10
by
Newlander, R. A.; Pritchard, E. B.; Taylor, N. L
texts
eye 873
favorite 0
comment 0
Pressure distribution on models of project mercury capsule at mach 1.60 to 6.01
Topics: ANGLE OF ATTACK, MERCURY CAPSULE, PRESSURE DISTRIBUTION, SCALE MODEL, MACH NUMBER, MERCURY PROJECT,...
177
177
May 31, 2011
05/11
by
Pecheur, Charle
texts
eye 177
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comment 0
This paper presents a three year project (FY99 to FY01) on the verification and validation of model based autonomous systems. The topics include: 1) Project Profile; 2) Model-Based Autonomy; 3) The Livingstone MIR; 4) MPL2SMV; 5) Livingstone to SMV Translation; 6) Symbolic Model Checking; 7) From Livingstone Models to SMV Models; 8) Application In-Situ Propellant Production; 9) Closed-Loop Verification Principle; 10) Livingstone PathFinder (LPF); 11) Publications and Presentations; and 12)...
Topics: FUSELAGES, PRESSURE DISTRIBUTION, FORCE DISTRIBUTION, THICKNESS RATIO, FRICTION FACTOR, FLOW...
382
382
Jun 21, 2010
06/10
by
Hurst, E. B.; Provencher, C. E., Jr.; Renz, D. D
texts
eye 382
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comment 0
Mechanical and electrical design of actuator for SERT 2 spacecraft
Topics: CASCADES, TURBINE BLADES, TURBINE ENGINES, GAS FLOW, PRESSURE DISTRIBUTION, STATIC PRESSURE
228
228
Jun 12, 2011
06/11
by
Murray, ShaTerea R
texts
eye 228
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comment 0
This summer I had the opportunity to work in the Environmental Management Office (EMO) under the Chemical Sampling and Analysis Team or CS&AT. This team s mission is to support Glenn Research Center (GRC) and EM0 by providing chemical sampling and analysis services and expert consulting. Services include sampling and chemical analysis of water, soil, fbels, oils, paint, insulation materials, etc. One of this team s major projects is the Drinking Water Project. This is a project that is done...
Topics: HOVERING, PRESSURE SENSITIVE PAINTS, ROTORS, TEST STANDS, PRESSURE DISTRIBUTION, RADII, THRUST
231
231
Jun 21, 2010
06/10
by
NON
texts
eye 231
favorite 0
comment 0
Describing Deep Space Network for communication with unmanned spacecraft traveling planetary distances
Topics: PRESSURE DISTRIBUTION, SURFACE PROPERTIES, THERMAL RESISTANCE, MATHEMATICAL MODELS, PLASTIC...
247
247
Jun 27, 2010
06/10
by
Kozyrev, N. A
texts
eye 247
favorite 0
comment 0
Molecular hydrogen overflow in Aristarchus lunar crater using spectral observations
Topics: AERODYNAMIC CHARACTERISTICS, AIRFOILS, PRESSURE DISTRIBUTION, FREDHOLM EQUATIONS, NUMERICAL...
228
228
May 27, 2011
05/11
by
Scott, William R.; Slocumb, Travis H., Jr
texts
eye 228
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comment 0
A wind-tunnel investigation to determine the effects of multiple-jet exits on the base pressure of a cylindrical afterbody has been conducted at Mach numbers from 0.6 to 1.4. The number of jets has been varied from one to six; the diameter of the convergent nozzles has also been varied. Jet total-pressure ratio ranged up to approximately 10. The results show that the jet total-pressure ratio at which peak negative pressures occur on the base decreased as the ratio of jet diameter to base...
Topics: ROTATING STALLS, FLOW VISUALIZATION, VELOCITY DISTRIBUTION, PRESSURE DISTRIBUTION, WATER, VORTICES,...
208
208
May 21, 2011
05/11
by
Imlay, Frederick
texts
eye 208
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comment 0
Wind-tunnel data are presented on the rate of change of yawing moment with sideslip for tests of 9 complete airplane models, 20 fuselage shapes, and 3 wing models with various combinations of dihedral, sweepback, and twist. The data were collected during a survey of existing information, which was made to find a reliable method of computing the yawing moment due to sideslip. Important errors common to methods of computation used at present appear to be due to large interference effects, the...
Topics: AIRFOIL PROFILES, PRESSURE DISTRIBUTION, COMPUTATION, FORCE DISTRIBUTION, EQUATIONS,...
373
373
Jun 19, 2010
06/10
by
Pivirotto, T. J
texts
eye 373
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comment 0
Effects of fluid mass flow rate and exit orifice diameter on radial static pressure distribution in compressible vortex flow field
Topics: COMPRESSIBLE FLOW, STATIC PRESSURE, VORTICES, FLUID MECHANICS, PRESSURE DISTRIBUTION, VORTEX FLOW,...
561
561
Jun 1, 2010
06/10
by
Yano, T
texts
eye 561
favorite 0
comment 0
Flow separation and pressure loss around blades of exhaust gas turbine operating in steady flow
Topics: BOUNDARY LAYER SEPARATION, GAS TURBINE, PRESSURE DISTRIBUTION, STEADY FLOW, TURBINE BLADE, EXHAUST...
1,078
1.1K
May 6, 2010
05/10
by
Czarnecki, K. R.; Lord, D. R
texts
eye 1,078
favorite 0
comment 0
Pressure distributions and aerodynamic characteristics of spoiler-type controls on trapezoidal wing at supersonic speed
Topics: AERODYNAMIC CHARACTERISTICS, AIRCRAFT CONTROL, PRESSURE DISTRIBUTION, SPOILER, SUPERSONIC SPEED,...
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240
Jul 12, 2010
07/10
by
Gatz, E. C
texts
eye 240
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comment 0
A description is presented of the functional design of the additions to the Deep Space Network telemetry system to handle increased data rates up to 30 megasymbols per second. The new system design includes a new demodulator, additional digital recording and formatting, and augmented monitor and capability.
Topics: BOUNDARY LAYER CONTROL, SUCTION, AIRFOILS, DIFFUSERS, PRESSURE DISTRIBUTION, WALL FLOW, WING SLOTS
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324
Jun 1, 2011
06/11
by
Butz, Mark G.; Rodriguez, Hector M
texts
eye 324
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comment 0
This report presents the results of the NASA contract Propulsion System Health Management for Enhanced Safety performed by General Electric Aircraft Engines (GE AE), General Electric Global Research (GE GR), and Pennsylvania State University Applied Research Laboratory (PSU ARL) under the NASA Aviation Safety Program. This activity supports the overall goal of enhanced civil aviation safety through a reduction in the occurrence of safety-significant propulsion system malfunctions. Specific...
Topics: GAS TURBINE ENGINES, PROPELLER BLADES, WIND TUNNEL TESTS, AUTOROTATION, DRAG, PRESSURE DISTRIBUTION
198
198
Jul 12, 2010
07/10
by
Squires, L. B
texts
eye 198
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comment 0
The social factors affecting the transition of English teachers into technical writing consultants are discussed. The basis for a new self-image is described and several principles of successful consulting are summarized. Major emphasis is on personnnel development and personal development.
Topics: FLOW VELOCITY, HYDRAULIC EQUIPMENT, PRESSURE DISTRIBUTION, PUMPS, RECIPROCATION, DESIGN ANALYSIS,...
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352
May 21, 2011
05/11
by
Mazelsky, Bernard; Diederich, Franklin
texts
eye 352
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comment 0
No Abstract Available
Topics: ICE FORMATION, ICE PREVENTION - TANKS, FUEL - VENTS, PRESSURE DISTRIBUTION - TANKS, FUEL - VENTS
267
267
Jun 27, 2010
06/10
by
Tyner, T. W
texts
eye 267
favorite 0
comment 0
No Abstract Available
Topics: BALLISTIC MISSILES, GRAPHS (CHARTS), TABLES (DATA), WIND TUNNEL STABILITY TESTS, PRESSURE...
163
163
Jun 21, 2010
06/10
by
Burrows, D. L
texts
eye 163
favorite 0
comment 0
Insulating system for receptacles of liquefied gases using wire cloth for forming frost layer
Topics: BLASIUS FLOW, LAMINAR BOUNDARY LAYER, FLOW EQUATIONS, FLOW STABILITY, FLOW VELOCITY, PRESSURE...
550
550
May 20, 2011
05/11
by
Hersey, Mayo
texts
eye 550
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comment 0
In the development of Diesel engine fuel injection systems it is necessary to have an approximate knowledge of the absolute viscosity of the fuel oil under high hydrostatic pressures. This report presents the results of experimental tests conducted by Mr. Jackson Newton Shore, utilizing the A.S.M.E. high pressure equipment.
Topics: LANDINGS - SEAPLANES, SEAPLANES - VOUGHT UO-1 - FREE FLIGHT TESTS, PRESSURE DISTRIBUTION - FLOAT...
521
521
Jun 15, 2011
06/11
by
Neff, G. R.; Weiler, F. B
texts
eye 521
favorite 0
comment 0
No Abstract Available
Topics: ENGINE INLETS, PRESSURE REDUCTION, SUPERSONIC SPEED, AERODYNAMIC CHARACTERISTICS, AERODYNAMIC...
489
489
Jul 11, 2010
07/10
by
NON
texts
eye 489
favorite 0
comment 0
No Abstract Available
Topics: COMBUSTION PHYSICS, GAS TURBINES, THERMODYNAMIC EFFICIENCY, NUMERICAL ANALYSIS, PRESSURE...
800
800
Jul 12, 2010
07/10
by
NON
texts
eye 800
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comment 0
Topic concerning remote sensing capabilities for providing reliable snow cover data and measurement of snow water equivalents are discussed. Specific remote sensing technqiues discussed include those in the microwave region of the electromagnetic spectrum.
Topics: NACELLES, PRESSURE DISTRIBUTION, PROPELLER FANS, SLIPSTREAMS, SUPERCRITICAL WINGS, DRAG, FATIGUE...
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323
texts
eye 323
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The results of the research performed by the university principal investigators are herein compiled. OhioView's general goals were: 1) To increase remote sensing education for Ohio s undergraduate and graduate students, and also enhancing curriculum in the mathematics and science for K-12 students using the capabilities of remote sensing; 2) To conduct advanced research to develop novel remote sensing applications, i.e. to turn data into information for more applications; 3) To maximize the use...
Topics: PRESSURE DISTRIBUTION, PRESSURE MEASUREMENT, TURBINE BLADES, ROTORS, ROTOR DYNAMICS, NOZZLES,...
221
221
Jul 11, 2010
07/10
by
Nyiri, L. K
texts
eye 221
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comment 0
Zero-gravity offers selective effect on growth and metabolic activity unicellular organisms as well as unique opportunities in purification of organic compounds. These make it possible to consider the biosynthesis and recovery of certain metabolites economically feasible in space. Design, construction and operation of systems for the above mentioned purposes requires interdisciplinary actions within the scope of a new discipline: space bioengineering. The problems and perspectives of this...
Topics: FLOW DISTRIBUTION, ROLLING MOMENTS, TRAILING EDGES, VORTICES, AERODYNAMIC LOADS, PRESSURE...
362
362
Jun 1, 2011
06/11
by
Ambartsumyan, S. A
texts
eye 362
favorite 0
comment 0
A numerical analysis of thin-walled shallow shells is presented. Equations of equilibrium and relations between deformations and stresses are included along with fundamental differential equations.
Topics: SUPERSONIC AIRCRAFT, FUSELAGES, CANOPIES, PRESSURE DISTRIBUTION, YAW, BOUNDARY LAYER SEPARATION,...
526
526
Jun 18, 2010
06/10
by
Hill, W. A., Jr.; Kaattari, G. E
texts
eye 526
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comment 0
Force and pressure distribution studies to high angles of attack on all-movable triangular and rectangular wings in combination with body at supersonic speeds
Topics: ANGLE OF ATTACK, ANGLE OF ATTACK, PRESSURE DISTRIBUTION, RECTANGULAR WING, SUPERSONIC SPEED,...
199
199
Jul 9, 2010
07/10
by
Jones, R. A.; Hunt, J. L
texts
eye 199
favorite 0
comment 0
An experimental study of surface pressure distributions on a family of blunt and sharp large angle cones was made in hypersonic flows of helium, air, and tetrafluoromethane. The effective isentropic exponents of these flows were 1.67, 1.40, and 1.12. Thus, the effect of large shock density ratios such as might be encountered during planetary entry because of real-gas effects could be studied by comparing results in tetrafluoromethane with those in air and helium. It was found that shock density...
Topics: ENGINE INLETS, FLOW CHARACTERISTICS, INLET FLOW, INTAKE SYSTEMS, AIR FLOW, COMPRESSIBLE FLOW,...
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1.5K
Jun 21, 2010
06/10
by
NON
texts
eye 1,474
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comment 0
Summary of supporting technical research and development work for NASA Space Program
Topics: MOISTURE CONTENT, NOZZLE FLOW, THERMODYNAMICS, AXISYMMETRIC BODIES, DISCHARGE COEFFICIENT, PRESSURE...
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220
Jul 5, 2010
07/10
by
Hohenemser, K. H.; Yin, S. K
texts
eye 220
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comment 0
The effects of various gust alleviation methods on the random blade response in flapping were studied analytically, assuming a rigid rotor support. The analytical model assumes rigid flapping blades with elastic root restraints. Linearized equations which are approximately valid at low lift conditions were used. Because of the interblade coupling from the feedback devices, the method of multiblade generalized coordinates was most convenient and was extended to include coning, differential...
Topics: CYLINDRICAL BODIES, ELASTOHYDRODYNAMICS, LUBRICANTS, COMPRESSIBILITY, DEFORMATION, FILM THICKNESS,...
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