Search the Planetary Science Decadal Survey collection: Advanced Search
31,280
31K
Jul 1, 1989
07/89
by
Wolverton, B. C.; Douglas, Willard L.; Bounds, Keit
texts
eye 31,280
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Previously, preliminary data on the ability of a group of common indoor plants to remove organic chemical from indoor air was presented. The group of plants chosen for this study was determined by joint agreement between NASA and the Associated Landscape Contractors of America. The chemicals chosen for study were benzene, trichloroethylene, and formaldehyde. The results show that plants can play a major role in removal of organic chemicals from indoor air.
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Topics: ARTIFICIAL INTELLIGENCE, FUZZY SETS, FUZZY SYSTEMS, NEURAL NETS, SET THEORY, DYNAMICAL SYSTEMS,...
28,478
28K
Jun 30, 1964
06/64
by
NON
texts
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Independent Tracking Coordination Program - trigonometric tables for calculating coordinates of satellites
Topics: COORDINATES, TRACKING SYSTEM, TRIGONOMETRY, COORDINATION, MATHEMATICAL TABLES, SATELLITE TRACKING,...
10,618
11K
texts
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All the basic areas of anthropometry and its applications to the design of clothing, equipment, and workspaces for manned space flight are presented.
Topics: CANCER, NEOPLASMS, RADIOBIOLOGY, TUMORS, CONFERENCES, HYPERTHERMIA, RADIATION THERAPY, RADIO...
5,362
5.4K
Nov 2, 1990
11/90
by
Ke, Min; Ali, Mooni
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Transformation of data into knowledge through conceptual induction has been the focus of our research described in this paper. We have developed a Machine Learning System (MLS) to analyze the rocket engine simulation data. MLS can provide to its users fault analysis, characteristics, and conceptual descriptions of faults, and the relationships of attributes and sensors. All the results are critically important in identifying faults.
Topics: DYNAMIC LOADS, DIMENSIONAL ANALYSIS, FAILURE MODES, LOAD DISTRIBUTION (FORCES), STRAIN...
2,474
2.5K
Dec 15, 1967
12/67
by
Jagow, R. B
texts
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Methane, methanol, glycerol, and hydrocarbons for microbial life support systems on extended space missions, animal links in closed system, use of wastes, and chemical synthesis of food
Topics: HYDROCARBONS, HUMAN WASTES, MICROBIOLOGY, MICROORGANISMS, NUTRIENTS, SPACE MISSIONS, SPACECRAFT...
10,082
10K
Dec 1, 1985
12/85
by
Mcmurtrey, E. L
texts
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This handbook is intended to provide a ready reference for many of the solid and liquid lubricants used in the space industry. Lubricants and lubricant properties are arranged systematically so that designers, engineers, and maintenance personnel can conveniently locate data needed for their work. This handbook is divided into two major parts (A and B). Part A is a compilation of solid lubricant suppliers information on chemical and physical property of data of more than 250 solid lubricants,...
Topics: ARIZONA, GEOCHRONOLOGY, GEOLOGICAL FAULTS, GEOMAGNETISM, ROCK MECHANICS, TECTONICS, MAPPING,...
8,429
8.4K
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A theoretical analysis of the parameters involved in spacecraft design and propulsion and the successful completion of space missions is presented. Various types of rockets and their specialized application are described. The physiological effects of space flight are discussed. The requirements for fuel, specific impulse, and energy considerations are included.
Topics: BOUNDARY LAYER SEPARATION, DIFFUSERS, NONUNIFORM FLOW, SEPARATED FLOW, PRESSURE GRADIENTS, VELOCITY...
5,284
5.3K
Nov 30, 1966
11/66
by
NON
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No Abstract Available
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Topics: ARTIFICIAL SATELLITES, GRAVITATIONAL FIELDS, PLANETARY ROTATION, SATELLITE PERTURBATION, ORBIT...
7,406
7.4K
2004
2004
by
Dick, Steven J.; Strick, James E
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In the opening weeks of 1998 a news article in the British journal Nature reported that NASA was about to enter biology in a big way. A ''virtual'' Astrobiology Institute was gearing up for business, and NASA administrator Dan Goldin told his external advisory council that he would like to see spending on the new institute eventually reach 100 million per year. ''You just wait for the screaming from the physical scientists (when that happens),'' Goldin was quoted as saying. Nevertheless, by the...
Topics: CHONDRULE, COOLING, HEATING, PETROGRAPHY, NEBULAE, OLIVINE, PLAGIOCLASE, PYROXENES, METEORITIC...
4,140
4.1K
Dec 15, 1959
12/59
by
NON
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No Abstract Available
Topics: APOLLO PROJECT, COMMAND SERVICE MODULES, LUNAR MODULE, MISSION PLANNING, SPACECRAFT DESIGN, SPACE...
8,657
8.7K
1966
1966
by
Gorlin, S. M.; Slezinger, I. I
texts
eye 8,657
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Wind tunnels for measuring aerodynamic characteristics
Topics: AERODYNAMIC CHARACTERISTICS, WIND TUNNELS, AERODYNAMIC CHARACTERISTICS, WIND TUNNEL
5,934
5.9K
1970
1970
by
Douglas, F. J
texts
eye 5,934
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Digital computer programs for analysis of large complex structures applied to NASTRAN project
Topics: EARTH IONOSPHERE, NONLINEARITY, PHASE VELOCITY, PLASMAS (PHYSICS), WAVE ATTENUATION, ELECTRIC...
18,021
18K
Jun 1, 1997
06/97
by
Walter, Neil A.; Scialdone, John J
texts
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Outgassing data, derived from tests at 398 K (125 C) for 24 hours in a vacuum as per ASTM E 595-84, have been compiled for numerous materials for spacecraft use. The data presented are the total mass loss (TML) and the collected volatile condensable materials (CVCM). The various materials are compiled by likely usage and alphabetically.
Topics: AMINO ACIDS, VEGETATION GROWTH, POTATOES, SUBSTITUTES, PROTEINS, CALMODULIN
The purpose of this study was to determine the feasibility of a landed mission to Mercury. It was conducted by the JHU/APL Space Department in partnership with Marshall Space Flight Center, Glen Research Center, and Steven Hauck from Case Western Reserve University. This was conducted as a concept maturity level (CML) 3 study focusing on feasibility trades and options for concepts with a goal of determining whether such a mission could be accomplished within a Principal Investigator (PI)-led...
Topics: Mercury, Concept Study, NASA, Lander, Mission, Decadal
Near Earth objects (NEOs) are attractive targets for spacecraft missions with the purpose of obtaining greater insight to the nature of the original bodies from which the terrestrial planets formed, without having to visit the Main Belt itself. Greater knowledge of NEOs directly sheds light on the origin and evolution of the asteroid belt, the formation of planets, and the history of the solar system. This report describes a search for NEOs that would be accessible for missions launching in...
Topics: Asteroids, NASA, Decadal, Trajectory Opportunities, Survey, Near Earth Asteroids, NEOs
5,336
5.3K
May 1, 1982
05/82
by
Leiss, A
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The Scout launch vehicle program, hardware, and systems are reviewed. Scout reliability and quality assurance provisions, procurement, launch sites and facilities, and financial data are also reported.
Topics: COMPUTER PROGRAMMING, LIFE CYCLE COSTS, MISSILES, QUANTITATIVE ANALYSIS, SEMANTICS, COMPUTER...
4,998
5.0K
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This publication contains extended abstracts of papers presented at the Nineteenth International Laser Radar Conference, held at Annapolis, Maryland, July 6-10, 1998; 260 papers were presented in both oral and poster sessions. The topics of the conference sessions were Aerosol Clouds, Multiple Scattering; Tropospheric Profiling; Stratospheric/Mesospheric Profiling; Wind Profiling; New Lidar Technology and Techniques; Lidar Applications, including Altimetry and Marine; Space and Future Lidar;...
Topics: X-15 AIRCRAFT, PILOT TRAINING, AIRSPEED, AERODYNAMIC CHARACTERISTICS, ANGLE OF ATTACK, LIFT DRAG...
18,496
18K
Sep 1, 1967
09/67
by
Braverman, A. S.; Grodko, L. N.; Leykand, M. A.; Mil, M. L.; Nekrasov, A. V
texts
eye 18,496
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Rotor aerodynamics in relation to historical and ideal development of helicopters
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Topics: AERODYNAMICS, HELICOPTER DESIGN, HELICOPTERS, HISTORIES, ROTOR AERODYNAMICS, HELICOPTER DESIGN,...
14,088
14K
Sep 1, 1969
09/69
by
LIGUM, T. I
texts
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AERODYNAMICS AND FLIGHT DYNAMICS OF TURBOJET AIRCRAFT
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Topics: ELECTRIC ARCS, ELECTRICAL RESISTIVITY, HIGH TEMPERATURE AIR, THERMAL CONDUCTIVITY, THERMAL PLASMAS,...
3,733
3.7K
Sep 20, 1969
09/69
by
NON
texts
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No Abstract Available
Topics: COMMUNICATION NETWORKS, RELIABILITY ENGINEERING, TOPOLOGY, FAILURE ANALYSIS, FAULT TREES, GRAPH...
6,735
6.7K
2000
2000
by
Siddiqi, Asif A
texts
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This book is, in essence, sixteen years in the making. First attempted to compile a history of the Soviet space program in 1982 author put together a rough chronology of the main events. A decade later, while living on a couch in a college friend's apartment, he began writing what would be a short history of the Soviet lunar landing program. The first draft was sixty-nine pages long. Late the following year, he decided to expand the topic to handle all early Soviet piloted exploration programs....
Topics: STATISTICAL ANALYSIS, RADIATIVE TRANSFER, SOLAR RADIATION, CLOUD COVER, CLOUDS (METEOROLOGY),...
The Enceladus Orbiter (EO) mission would explore Saturn's moon Enceladus, investigating the following in order of priority: -The nature of Enceladus's cryovolcanic activity -The internal structure and chemistry of Enceladus -The geology of Enceladus -The interaction of Enceladus with the Saturn system -The surfaces and interiors of Saturn's moons Rhea, Dione and Tethys -Preparation for potential future landing on Enceladus
Topics: Enceladus, NASA, MIssion Concept Study, Decadal
4,113
4.1K
Nov 1, 1960
11/60
by
HOHMANN, WALTE
texts
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THIS WORK (ORIGINALLY PUBLISHED IN 1925) CONTRIBUTES TO RECOGNITION OF THE FEASIBILITY OF SPACE TRAVEL. TREATED ARE PROBLEMS ASSOCIATED WITH LEAVING THE EARTH, RETURN TO EARTH, FREE-SPACE FLIGHT, CIRCUM-NAVIGATION OF CELESTIAL OBJECTS, AND LANDING ON OTHER CELESTIAL OBJECTS.
Topics: DIFFUSION THEORY, REACTIVITY, DIFFUSION, SIMULATORS, SHIELDING
11,822
12K
May 1, 1972
05/72
by
BAZOV, D. I
texts
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PRINCIPLES OF HELICOPTER FLIGHT UNDER VARIOUS CONDITIONS ARE REVIEWED, GIVING SPECIAL ATTENTION TO THE OPERATION OF THE MAIN ROTOR. A BRIEF HISTORY OF HELICOPTER DEVELOPMENT IS PRESENTED, TOGETHER WITH A SUMMARY OF THE MAIN COMPONENTS OF A HELICOPTER AND A CLASSIFICATION OF THE VARIOUS TYPES OF HELICOPTERS. THE CHARACTERISTICS OF THE MAIN ROTOR AND ITS OPERATION DURING AUTOROTATION AND DURING AXIAL AND OBLIQUE FLOW ARE CONSIDERED. ALSO CONSIDERED ARE VERTICAL AND HORIZONTAL FLIGHT, ALTITUDE...
( 1 reviews )
Topics: BALL BEARINGS, FATIGUE TESTS, LUBRICATING OILS, SERVICE LIFE, STEELS, AIRCRAFT ENGINES, HIGH...
19,574
20K
Mar 1, 1988
03/88
by
Tomayko, James E
texts
eye 19,574
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This book examines the computer systems used in actual spaceflight or in close support of it. Each chapter deals with either a specific program, such as Gemini or Apollo onboard computers, or a closely related set of systems, such as launch processing or mission control. A glossary of computer terms is included.
Topics: BRIGHTNESS, STABILITY, TRAJECTORY ANALYSIS, QUASARS, STATISTICAL ANALYSIS, VARIABILITY, ASYMPTOTIC...
2,524
2.5K
texts
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Given here are extended abstracts of papers presented at the 16th International Laser Radar Conference, held in Cambridge, Massachusetts, July 20-24, 1992. Topics discussed include the Mt. Pinatubo volcanic dust laser observations, global change, ozone measurements, Earth mesospheric measurements, wind measurements, imaging, ranging, water vapor measurements, and laser devices and technology.
Topics: ATMOSPHERIC COMPOSITION, ATMOSPHERIC CHEMISTRY, POSTLAUNCH REPORTS, SPACE SHUTTLES, SPACE...
2,214
2.2K
texts
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This bibliography lists 193 reports, journal articles, and other documents introduced in the NASA scientific and technical system in Aug. 1995. Subject coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in aerodynamics, aeronautics, and ground support equipment for...
Topics: AEROSPACE PLANES, COMBUSTION CHAMBERS, INLET NOZZLES, MACH NUMBER, NATIONAL AEROSPACE PLANE...
4,944
4.9K
texts
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The AIAA/NASA Conference on Intelligent Robotics in Field, Factory, Service, and Space (CIRFFSS '94) was originally proposed because of the strong belief that America's problems of global economic competitiveness and job creation and preservations can partly be solved by the use of intelligent robotics, which are also required for human space exploration missions. Individual sessions addressed the following topics: (1) vision systems integration and architecture; (2) selective perception and...
Topics: COMPUTER NETWORKS, CENTRAL PROCESSING UNITS, RESEARCH AND DEVELOPMENT, COMPUTER SYSTEMS DESIGN,...
268
268
Nov 9, 1955
11/55
by
Rom, F. E.; Sams, E. W
texts
eye 268
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No Abstract Available
Topics: CANARD CONFIGURATIONS, CONTROL STABILITY, FLIGHT TESTS, LONGITUDINAL STABILITY, LOW ASPECT RATIO...
6,067
6.1K
1979
1979
by
Bornemann, W. E.; Surber, T. E
texts
eye 6,067
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An overview of the wind tunnel program is given and aerodynamic characteristics of the final configuration are described. Aerodynamic parameters critical to definition of Orbiter entry control and performance are identified. Trim capability and stability and control characteristics are discussed at critical regions in the entry trajectory. Methods are described to define reaction control rocket effectiveness and aerodynamic interactions during the initial portion of entry. At hypersonic speeds,...
Topics: ANGLES (GEOMETRY), AXISYMMETRIC FLOW, EXTERNALLY BLOWN FLAPS, JET IMPINGEMENT, OBLIQUE WINGS,...
818
818
2000
2000
by
Markley, F. Landis; Mortari, Daniel
texts
eye 818
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This paper contains a critical comparison of estimators minimizing Wahba's loss function. Some new results are presented for the QUaternion ESTimator (QUEST) and EStimators of the Optimal Quaternion (ESOQ and ESOQ2) to avoid the computational burden of sequential rotations in these algorithms. None of these methods is as robust in principle as Davenport's q method or the Singular Value Decomposition (SVD) method, which are significantly slower. Robustness is only an issue for measurements with...
Topics: HEATING EQUIPMENT, FISSION, TEST FACILITIES, RESEARCH FACILITIES, POWER REACTORS, PROPULSION
7,665
7.7K
Jun 1, 1979
06/79
by
Brennan, P. J.; Kroliczek, E. J
texts
eye 7,665
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No Abstract Available
Topics: HYDROGEN OXYGEN ENGINES, TURBOROCKET ENGINES, ORBIT TRANSFER VEHICLES, ROCKET ENGINE DESIGN,...
The National Research Council's Planetary Science Decadal Survey: Primitive Bodies Panel has commissioned NASA's Goddard Space Flight Center (GSFC) with a rapid architecture study conducted under NASA Headquarters leadership. The purpose of the study is to determine whether a mission to orbit the Centaur Object Chiron can be achieved within a New Frontiers cost range with a limited supply of Advanced Stirling Radioisotope Generators (ASRGs). Guidelines include a launch between 2015 and 2025, a...
Topics: Chiron, Orbiter, NASA, Mission Concept Study, Decadal
5,847
5.8K
texts
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Volume 2 contains data resulting from surveys of 61 military and civilian populations of both sexes from the U.S., Europe, and Asia. Some 295 measured variables are defined and illustrated.
Topics: ANTHROPOMETRY, SIZE DETERMINATION, SPACECRAFT DESIGN, SPACECRAFT ENVIRONMENTS, BODY SIZE (BIOLOGY),...
650
650
Sep 1, 2004
09/04
by
Bradley, Kevin R
texts
eye 650
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This paper describes the development of a methodology for sizing Blended-Wing-Body (BWB) transports and how the capabilities of the Flight Optimization System (FLOPS) have been expanded using that methodology. In this approach, BWB transports are sized based on the number of passengers in each class that must fit inside the centerbody or pressurized vessel. Weight estimation equations for this centerbody structure were developed using Finite Element Analysis (FEA). This paper shows how the...
Topics: PRESSURE SENSORS, LOOP ANTENNAS, FREQUENCY RANGES, RADIO FREQUENCIES, SIGNAL PROCESSING,...
2,238
2.2K
1962
1962
by
Levinson, I. B.; Sen, A.; Sen, R. N.; Vanagas, V. V.; Yutsis, A. P
texts
eye 2,238
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Mathematical analysis of angular momentum
Topics: ANGULAR MOMENTUM, ANGULAR VELOCITY, ANGULAR MOTION, MATHEMATICS /GEN/
The Jovian moon Io is likely the most geologically active body in the solar system, offering insight into tidal heating, volcanic processes, and other phenomena. However, its location within Jupiter's radiation belt presents significant engineering challenges that must be addressed to enable future missions to Io. Under the direction of NASA, and with direct guidance from the National Research Council's (NRC's) Satellites Panel, the Jet Propulsion Laboratory's (JPL's) Advanced Project Design...
Topics: Io, NASA, Mission Concept Study, Decadal
5,895
5.9K
Aug 1, 1975
08/75
by
Tsiolkovskiy, K. E
texts
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A classical, comprehensive collection of theoretical studies on interplanetary space travel, jet propulsion, and rocket technology is presented. Topics treated are: (1) escape velocity; (2) trajectories; (3) design considerations; (4) fuels; (5) food supplies and spacecraft environment during spaceflight; and (6) the general mechanics of spaceflight.
Topics: COMBUSTION CHAMBERS, EXHAUST GASES, POLLUTION CONTROL, AIR POLLUTION, DESIGN ANALYSIS
7,553
7.6K
texts
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This bibliography lists 822 reports, articles and other documents introduced into the NASA Scientific and Technical Information System in 1988. Items are selected and grouped according to their usefulness to the manager as manager. Citations are grouped into ten subject categories: human factors and personnel issues; management theory and techniques; industrial management and manufacturing; robotics and expert systems; computers and information management; research and development; economics,...
Topics: ALGORITHMS, KALMAN FILTERS, LEAST SQUARES METHOD, NAVIGATION, POSITION ERRORS, POWER SPECTRA, RADAR...
7,305
7.3K
Feb 1, 1963
02/63
by
Boltz, F. W
texts
eye 7,305
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Z-function solutions for motion and heating during atmosphere entry from equatorial orbits of rotating planets
Topics: ATMOSPHERIC ENTRY, MOTION, PLANET, REENTRY, Z FUNCTION, EQUATORIAL ORBITS, HEATING, MOTION,...
3,019
3.0K
texts
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The dynamic structural analysis of rotary winged aircraft is reported, considering helicopter vibration and loads.
Topics: MISSION PLANNING, RADAR MAPS, VENUS (PLANET), AIRBORNE RADAR, PHOTOGRAPHY, PLANETARY SURFACES,...
2,905
2.9K
Nov 1, 1970
11/70
by
Wilson, J. H
texts
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Planning, development, design, manufacture, and testing for Mariner Mars 1969 project - Vol. 1
Topics: DEEP SPACE INSTRUMENTATION FACILITY, DEEP SPACE NETWORK, INTERPLANETARY SPACECRAFT, MARS 71...
1,847
1.8K
texts
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The National Aeronautics and Space Administration (NASA) is aware of the potential toxicological hazards to humans that might be associated with prolonged spacecraft missions. Despite major engineering advances in controlling the atmosphere within spacecraft, some contamination of the air appears inevitable. NASA has measured numerous airborne contaminants during space missions. As the missions increase in duration and complexity, ensuring the health and well-being of astronauts traveling and...
Topics: LIFE SCIENCES, BIBLIOGRAPHIES, MICROGRAVITY, AEROSPACE MEDICINE, BIOASTRONAUTICS, EXOBIOLOGY, LIFE...
2,218
2.2K
Jan 29, 1968
01/68
by
NON
texts
eye 2,218
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Operating manual for FORTRAN program to predict aerodynamic and heat transfer characteristics of annular and rectangular gas turbine combustors
Topics: FORTRAN, FLOW CHARTS, INLET FLOW, NOZZLE DESIGN, HEAT TRANSFER, MANUALS, SUBROUTINES, AERODYNAMIC...
354
354
Jun 1, 1969
06/69
by
Kolmogoroff, A. N
texts
eye 354
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Integral equations for logarithmical normal law of dimension distributions of fragmented particles
Topics: CAVITATION CORROSION, COBALT ALLOYS, LIQUID SODIUM, PRESSURE EFFECTS, TEMPERATURE EFFECTS, GRAPHS...
192
192
1986
1986
by
Buseck, P. R
texts
eye 192
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Possible compounds for the 9.7 micron spectral feature and the 2175A spectral bump are examined. Results from electron microscopy and high resolution transmission electron microscopy are discussed.
Topics: COSMIC DUST, INFRARED SPECTRA, RADIO SPECTRA, RADIATION PRESSURE, RED GIANT STARS, STELLAR...
The Moon's regolith contains vast resources of helium-3 an ideal fuel for terrestrial fusion power systems. Development of plans for private sector investment in obtaining helium-3 and its by-products requires detailed definition of that isotope's selenographic distribution.
2,135
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The main theme of this edition of the annual Research and Technology Report is Mission Operations and Data Systems. Shifting from centralized to distributed mission operations, and from human interactive operations to highly automated operations is reported. The following aspects are addressed: Mission planning and operations; TDRSS, Positioning Systems, and orbit determination; hardware and software associated with Ground System and Networks; data processing and analysis; and World Wide Web....
Topics: LIGHT MODULATORS, OPTICAL DATA PROCESSING, DYNAMIC RANGE, LOGARITHMS, PHOTORECEPTORS,...
1,948
1.9K
Jul 1, 1965
07/65
by
Engelbart, D. C.; English, W. K.; Huddart, B
texts
eye 1,948
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Human composition and modification of computer driven cathode ray tube display
Topics: CATHODE RAY TUBES, DISPLAY SYSTEM, COMPUTER PROGRAMS, COMPUTER TECHNIQUES, DISPLAY DEVICES, ON-LINE...
2,473
2.5K
Mar 1, 1963
03/63
by
Lee, C. C
texts
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Fortran program for design of pure external and internal-external expansion plug nozzles
Topics: APPLICATIONS PROGRAMS (COMPUTERS), FORTRAN, NOZZLE DESIGN, PLUG NOZZLES, FORTRAN, NOZZLE
6,044
6.0K
texts
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This first volume of the Autonomous Control Engineering (ACE) Center Press Series on NASA University Research Center's (URC's) Advanced Technologies on Space Exploration and National Service constitute a report on the research papers and presentations delivered by NASA Installations and industry and Report of the NASA's fourteen URC's held at the First National Conference in Albuquerque, New Mexico from February 16-19, 1997.
Topics: APPLICATIONS PROGRAMS (COMPUTERS), MODULES, PROGRAMMERS, WORKSTATIONS, PROTOTYPES, INTERNETS,...
1,542
1.5K
Jun 1, 1998
06/98
by
Krist, Sherrie L.; Biedron, Robert T.; Rumsey, Christopher L
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This document is the User's Manual for the CFL3D computer code, a thin-layer Reynolds-averaged Navier-Stokes flow solver for structured multiple-zone grids. Descriptions of the code's input parameters, non-dimensionalizations, file formats, boundary conditions, and equations are included. Sample 2-D and 3-D test cases are also described, and many helpful hints for using the code are provided.
Topics: NITRIC OXIDE, CARDIOVASCULAR SYSTEM, MOLECULES, ANTIDIURETICS, BARORECEPTORS, DEHYDRATION, DRUGS,...
12,425
12K
texts
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In August 1997, NASA sponsored a 3-day workshop to assess the prospects emerging from physics that may eventually lead to creating propulsion breakthroughs -the kind of breakthroughs that could revolutionize space flight and enable human voyages to other star systems. Experiments and theories were discussed regarding the coupling of gravity and electromagnetism, vacuum fluctuation energy, warp drives and wormholes, and superluminal quantum tunneling. Because the propulsion goals are presumably...
Topics: TEST CHAMBERS, AERODYNAMIC CHARACTERISTICS, HOT-WIRE ANEMOMETERS, FLOW DISTRIBUTION, WIND TUNNELS,...
5,971
6.0K
1966
1966
by
Leontev, U. N.; Vlasov, V. Z
texts
eye 5,971
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Theory based on Vlasov general variational method to analyze beams and plates on elastic foundations
Topics: ELASTIC PROPERTIES, FOUNDATIONS, PROBLEM SOLVING, VARIATIONAL PRINCIPLES, VLASOV EQUATIONS,...
3,233
3.2K
May 1, 1970
05/70
by
Arbit, H. A.; Clapp, S. D.; Nagai, C. K
texts
eye 3,233
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Feasibility of lithium-fluorine-hydrogen propellant combination
Topics: COMETS, METEOROIDS, COSMOLOGY, DISRUPTING, SOLAR SYSTEM
3,773
3.8K
texts
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This two volume publication presents the proceedings of the third through sixth history symposia of the International Academy of Astronautics. Thirty-nine papers are divided into four categories: (1) Early Solid Propellant Rocketry; (2) Rocketry and Astronautics: Concepts, Theory, and Analyses after 1880; (3) The Development of Liquid and Solid Propellant Rockets from 1880 to 1945; and (4) Rocketry and Astronautics after 1945. Categories 1 and 2 will be found in volume 1 and the remainder in...
Topics: ALGORITHMS, LEAST SQUARES METHOD, MATRICES (MATHEMATICS), MATHEMATICAL MODELS, ORTHOGONAL...
4,183
4.2K
texts
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A survey of studies into hazards associated with closed or pressurized system rupture and preliminary guidelines for the performance design of primary, secondary, and protective receptors of these hazards are provided. The hazards discussed in the survey are: blast, fragments, ground motion, heat radiation, biological, and chemical. Performance guidelines for receptors are limited to pressurized systems that contain inert gas. The performance guidelines for protection against the remaining...
Topics: GEARS, HELICOPTERS, TRANSMISSIONS (MACHINE ELEMENTS), VIBRATION, COMBAT, DATA BASES, EFFICIENCY,...
2,012
2.0K
1964
1964
by
Anderson, W. J.; Bisson, E. E
texts
eye 2,012
favorite 2
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Fundamentals of friction and wear on fluid film and rolling-element bearings
Topics: BEARING, FLUID FILMS, FRICTION, WEAR, BEARING, FRICTION
3,346
3.3K
texts
eye 3,346
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Mariner r program specifications, design changes, and evaluation
Topics: DOCUMENTATION, MARINER PROGRAM, MARINER SPACECRAFT, MARINER R PROGRAM
4,351
4.4K
texts
eye 4,351
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The Aerospace Mechanisms Symposium (AMS) provides a unique forum for those active in the design, production and use of aerospace mechanisms. A major focus is reporting problems and solutions associated with the development and flight certification of new mechanisms. Organized by the Mechanisms Education Association, NASA and Lockheed Martin Space Systems Company (LMSSC) share the responsibility for hosting the AMS. Now in its 37th symposium, the AMS continues to be well attended, attracting...
Topics: FABRICATION, NONLINEARITY, STATIC TESTS, FINITE ELEMENT METHOD, MATHEMATICAL MODELS, STATISTICAL...
1,492
1.5K
texts
eye 1,492
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The Magellan radar-mapping mission to the planet Venus is described. Scientific highlights include the history of U.S. and Soviet missions, as well as ground-based radar observations, that have provided the current knowledge about the surface of Venus. Descriptions of the major Venusian surface features include controversial theories about the origin of some of the features. The organization of the Magellan science investigators into discipline-related task groups for data-analysis purposes is...
Topics: ATMOSPHERIC SOUNDING, TIROS N SERIES SATELLITES, CLOUD PHYSICS, HIGH RESOLUTION, SATELLITE...
4,500
4.5K
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eye 4,500
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The User's Manual is one of four manuals that constitute the documentation for NASTRAN, the other three being the Theoretical Manual, the Programmer's Manual and the Demonstration Problem Manual. Although the User's Manual contains all of the information that is directly associated with the solution of problems with NASTRAN, the user will find it desirable to refer to the other manuals for assistance in the solution of specific user problems. The Theoretical Manual gives an excellent...
Topics: ALGORITHMS, COMPUTERIZED SIMULATION, DYNAMIC RESPONSE, FINITE ELEMENT METHOD, PARTIAL DIFFERENTIAL...
3,982
4.0K
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The proceedings of the 32nd Aerospace Mechanism Symposium are reported. NASA John F. Kennedy Space Center (KSC) hosted the symposium that was held at the Hilton Oceanfront Hotel in Cocoa Beach, Florida on May 13-15, 1998. The symposium was cosponsored by Lockheed Martin Missiles and Space and the Aerospace Mechanisms Symposium Committee. During these days, 28 papers were presented. Topics included robotics, deployment mechanisms, bearing, actuators, scanners, boom and antenna release, and test...
Topics: ATOMIC PHYSICS, RESONANCE FLUORESCENCE, MAGNETICALLY TRAPPED PARTICLES, MONOCHROMATORS,...
This paper discusses the capability of currently available TPS and the availability of heritage carbon phenolic used on the Pioneer-Venus probes. A prime conclusion is that there are important issues regarding the availability of the TPS required for future Venus entry probes.
923
923
Nov 2, 1953
11/53
by
Bertram, M. H.; Ulmann, E. F
texts
eye 923
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Aerodynamic characteristics of low-aspect-ratio wings at supersonic speeds
Topics: AERODYNAMIC CHARACTERISTICS, SUPERSONIC SPEED, DETACHMENT, HIGH SPEED, LOW ASPECT RATIO WINGS, MACH...
3,495
3.5K
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eye 3,495
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Pocket Statistics is published for the use of NASA managers and their staff. Included herein is Administrative and Organizational information, summaries of Space Flight Activity including the NASA Major Launch Record, and NASA Procurement, Financial, and Manpower data. The NASA Major Launch Record includes all launches of Scout class and larger vehicles. Vehicle and spacecraft development flights are also included in the Major Launch Record. Shuttle missions are counted as one launch and one...
Topics: A STARS, INFRARED RADIATION, MAIN SEQUENCE STARS, STELLAR EVOLUTION, STELLAR MASS, ASTRONOMY, DATA...
926
926
Aug 1, 2001
08/01
by
Colozza, Anthony J.; Miller, Christopher J.; Reed, Brian D.; Kohout, Lisa L.; Loyselle, Patricia L
texts
eye 926
favorite 0
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The capabilities and performance of an aircraft depends greatly on the ability of the propulsion system to provide thrust. Since the beginning of powered flight, performance has increased in step with advancements in aircraft propulsion systems. These advances in technology from combustion engines to jets and rockets have enabled aircraft to exploit our atmospheric environment and fly at altitudes near the Earth's surface to near orbit at speeds ranging from hovering to several times the speed...
Topics: ACTIVE CONTROL, HEAT PIPES, OPERATING TEMPERATURE, TEMPERATURE CONTROL, EVAPORATORS, CONDENSERS...
569
569
1998
1998
by
Borowski, Oded; Howell, Burgess F.; Sever, Thomas L
texts
eye 569
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This paper examines the use of ancient fire and smoke signals for communication in the Kingdom of Judah. Historical and biblical references are cited that discuss this communication system. The current physical and political landscape of Israel precludes testing of hypotheses using traditional techniques. The use of a GIS is enlisted to overcome these obstacles and predict line-of-sight patterns that are conducive for a fire signal communication system. Final demonstration of this predictive...
Topics: SCANNING ELECTRON MICROSCOPY, PHOSPHATES, PROKARYOTES, MICROORGANISMS, MICROSTRUCTURE, CARBONACEOUS...
3,941
3.9K
Nov 1, 1977
11/77
by
Tada, H. Y.; Carter, J. R., Jr
texts
eye 3,941
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Solar cell theory cells are manufactured, and how they are modeled mathematically is reviewed. The interaction of energetic charged particle radiation with solar cells is discussed in detail and the concept of 1 MeV equivalent electron fluence is introduced. The space radiation environment is described and methods of calculating equivalent fluences for the space environment are developed. A computer program was written to perform the equivalent fluence calculations and a FORTRAN listing of the...
Topics: DIGITAL COMPUTERS, GATES (CIRCUITS), RADIATION, ARRAYS, ELECTROLUMINESCENCE, PARALLEL COMPUTERS,...
6,175
6.2K
texts
eye 6,175
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Manual control is discussed in terms of operator modeling, measurement of human response, mental workload, pilot/operator opinion, effects of motion, aircraft displays, supervisory control, automobile driving, and remote manipulation.
Topics: COMPUTER NETWORKS, COMPUTER SYSTEMS DESIGN, COMPUTER SYSTEMS PERFORMANCE, DATA CONVERSION ROUTINES,...
7,383
7.4K
May 1, 1989
05/89
by
Scholz, A. L.; Byrd, R. J
texts
eye 7,383
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No Abstract Available
Topics: FLUID MANAGEMENT, RETRAINING, SIMULATION, THRUST REVERSAL, VAPORS, GRAVITATIONAL EFFECTS, LIQUID...
Titan is a high priority for exploration, as recommended by NASA's 2006 Solar System Exploration (SSE) Roadmap (NASA 2006), NASA's 2003 National Research Council (NRC) Decadal Survey (NRC Space Studies Board 2003) and ESA's Cosmic Vision Program Themes. Recent revolutionary Cassini-Huygens discoveries have dramatically escalated interest in Titan as the next scientific target in the outer solar system. This study demonstrates that an exciting Titan Saturn System Mission (TSSM) that explores two...
Topics: Titan, Saturn, Titan Saturn System Mission, NASA, Mission Concept Study, Decadal
This report documents the results of a study commissioned by the 2012 Decadal Report Primitive Bodies Panel to provide inputs to six key technological issues that need to be addressed to facilitate a Cryogenic Nucleus Sample Return (CNSR) mission and that will likely not be solved by other primitive bodies missions.
Topics: Comets, NASA, Mission Concept Study, Decadal
897
897
Oct 1, 1965
10/65
by
De Sievers, A
texts
eye 897
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Wind tunnel tests of ground effect on aircraft models with short wingspans during takeoff and landing
Topics: AIRCRAFT MODELS, WIND TUNNEL, WING SPAN, GROUND EFFECT (AERODYNAMICS), LANDING, TAKEOFF, WIND...
