Search the Planetary Science Decadal Survey collection: Advanced Search
32,144
32K
Jun 30, 1964
06/64
by
NON
texts
eye 32,144
favorite 2
comment 0
Independent Tracking Coordination Program - trigonometric tables for calculating coordinates of satellites
Topics: COORDINATES, TRACKING SYSTEM, TRIGONOMETRY, COORDINATION, MATHEMATICAL TABLES, SATELLITE TRACKING,...
3,317
3.3K
1988
1988
by
Hart, Sandra G.; Staveland, Lowell E
texts
eye 3,317
favorite 1
comment 0
The results of a multi-year research program to identify the factors associated with variations in subjective workload within and between different types of tasks are reviewed. Subjective evaluations of 10 workload-related factors were obtained from 16 different experiments. The experimental tasks included simple cognitive and manual control tasks, complex laboratory and supervisory control tasks, and aircraft simulation. Task, behavior, and subject-related correlates of subjective workload...
Topics: OXYGEN, MATHEMATICAL MODELS, STELLAR ENVELOPES, WATER, WATER VAPOR, INFRARED ASTRONOMY,...
33,134
33K
Jul 1, 1989
07/89
by
Wolverton, B. C.; Douglas, Willard L.; Bounds, Keit
texts
eye 33,134
favorite 20
comment 1
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.
favorite ( 1 reviews )
Topics: ARTIFICIAL INTELLIGENCE, FUZZY SETS, FUZZY SYSTEMS, NEURAL NETS, SET THEORY, DYNAMICAL SYSTEMS,...
9,722
9.7K
texts
eye 9,722
favorite 9
comment 0
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...
5,909
5.9K
Nov 30, 1966
11/66
by
NON
texts
eye 5,909
favorite 16
comment 1
No Abstract Available
favoritefavoritefavoritefavoritefavorite ( 1 reviews )
Topics: ARTIFICIAL SATELLITES, GRAVITATIONAL FIELDS, PLANETARY ROTATION, SATELLITE PERTURBATION, ORBIT...
2,552
2.6K
Jul 1, 1979
07/79
by
Perkins, P. J.; Holdeman, J. D.; Nastrom, G. D
texts
eye 2,552
favorite 0
comment 0
Measurements of zone concentrations both outside and in the cabin of an airline operated Boeing 747SP and Boeing 747-100 airliner are presented. Plotted data and the corresponding tables of observations taken at altitude between the departure and destination airports of each flight are arranged chronologically for the two aircraft. Data were taken at five or ten minute intervals by automated instrumentation used in the NACA Global Atmospheric Sampling Program.
Topics: AIRFOIL PROFILES, TRAILING EDGES, HYDRODYNAMICS, JOUKOWSKI TRANSFORMATION, MATHEMATICAL MODELS,...
1,949
1.9K
Feb 28, 1966
02/66
by
NON
texts
eye 1,949
favorite 0
comment 0
Guidance and control, engineering development, environmental simulation, jet propulsion, space science, and telecommunications
Topics: AEROSPACE SCIENCES, GUIDANCE AND CONTROL, JET PROPULSION, SPACE SCIENCE, TELECOMMUNICATION, CONTROL...
6,529
6.5K
Aug 1, 1975
08/75
by
Tsiolkovskiy, K. E
texts
eye 6,529
favorite 4
comment 0
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
611
611
Sep 15, 1960
09/60
by
Sagan, C
texts
eye 611
favorite 0
comment 0
No Abstract Available
Topics: ATMOSPHERIC RADIATION, ENERGY BUDGETS, VENUS (PLANET)
4,726
4.7K
Sep 20, 1969
09/69
by
NON
texts
eye 4,726
favorite 7
comment 0
No Abstract Available
Topics: COMMUNICATION NETWORKS, RELIABILITY ENGINEERING, TOPOLOGY, FAILURE ANALYSIS, FAULT TREES, GRAPH...
6,221
6.2K
Nov 2, 1990
11/90
by
Ke, Min; Ali, Mooni
texts
eye 6,221
favorite 1
comment 0
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...
7,894
7.9K
Feb 1, 1963
02/63
by
Boltz, F. W
texts
eye 7,894
favorite 0
comment 0
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,...
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
3,786
3.8K
texts
eye 3,786
favorite 2
comment 0
No Abstract Available
Topics: APOLLO SPACECRAFT, HEAT TRANSFER, SPACECRAFT CONFIGURATIONS, AERODYNAMIC HEATING, RESEARCH...
4,134
4.1K
texts
eye 4,134
favorite 0
comment 0
The Bonner Durchmusterung (BD) is a visual survey of stars in the declination zones 89 deg to -01 deg. This volume contains the data for the declination range 89 deg to 30 deg. The survey, completed by Argelander and his assistants in the years 1852-1861, was performed and the stars cataloged by allowing the telescope to drift along the mean declination of each zone and recording the positions and magnitudes of stars crossing the transit line of each field. The goal of the survey was to obtain...
Topics: BOOSTER ROCKET ENGINES, PRODUCTION, PROVING, SCHEDULES, LIQUID PROPELLANT ROCKET ENGINES, PROJECT...
6,089
6.1K
texts
eye 6,089
favorite 0
comment 0
No Abstract Available
Topics: PROPULSION SYSTEM CONFIGURATIONS, SATURN S-4B STAGE, SPACECRAFT COMPONENTS, CHECKOUT, SATURN 5...
11,379
11K
texts
eye 11,379
favorite 8
comment 0
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...
19,541
20K
Sep 1, 1967
09/67
by
Braverman, A. S.; Grodko, L. N.; Leykand, M. A.; Mil, M. L.; Nekrasov, A. V
texts
eye 19,541
favorite 7
comment 1
Rotor aerodynamics in relation to historical and ideal development of helicopters
favoritefavoritefavorite ( 1 reviews )
Topics: AERODYNAMICS, HELICOPTER DESIGN, HELICOPTERS, HISTORIES, ROTOR AERODYNAMICS, HELICOPTER DESIGN,...
2,892
2.9K
texts
eye 2,892
favorite 0
comment 0
Following the return to earth on December 2, 1988, of Orbiter OV-104, Atlantis, it was observed that there was substantial Thermal Protection System (TPS) tile damage present on the lower right fuselage and wing. Damage sites were more numerous than on previous flights and conversely, there was almost no damage present on Atlantis' left side. A review team investigated the cause beginning with a detailed inspection of the Atlantis TPS damage, and a review of related inspection reports to...
Topics: EARTH RESOURCES, HYDROLOGY, IMAGE PROCESSING, MINERAL EXPLORATION, OCEANOGRAPHY, PHOTOMAPPING,...
12,257
12K
May 1, 1972
05/72
by
BAZOV, D. I
texts
eye 12,257
favorite 0
comment 1
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...
3,514
3.5K
Dec 15, 1967
12/67
by
Jagow, R. B
texts
eye 3,514
favorite 0
comment 0
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...
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
9,301
9.3K
1966
1966
by
Gorlin, S. M.; Slezinger, I. I
texts
eye 9,301
favorite 2
comment 0
Wind tunnels for measuring aerodynamic characteristics
Topics: AERODYNAMIC CHARACTERISTICS, WIND TUNNELS, WIND TUNNEL
4,906
4.9K
Dec 15, 1959
12/59
by
NON
texts
eye 4,906
favorite 7
comment 0
No Abstract Available
Topics: APOLLO PROJECT, COMMAND SERVICE MODULES, LUNAR MODULE, MISSION PLANNING, SPACECRAFT DESIGN, SPACE...
3,873
3.9K
texts
eye 3,873
favorite 0
comment 0
The Infrared Astronomical Satellite (IRAS) was launched January 26, 1983. During its 300-day mission, IRAS surveyed over 96 pct of the celestial sphere at four infrared wavelengths, centered approximately at 12, 25, 60, and 100 microns. This is Volume 3, The Point Source Catalog Declination Range 30 deg greater than delta greater than 0 deg.
Topics: EQUIPMENT SPECIFICATIONS, NAVIGATION AIDS, PERFORMANCE TESTS, STAR TRACKERS, ELECTRO-OPTICS, LASER...
4,749
4.7K
texts
eye 4,749
favorite 4
comment 0
Information is presented on the most important features of atmospheric radiation such as the quantitative characteristics of molecular absorption and scattering, spectral and angular distributions, and the three-dimensional structure of shortwave and longwave radiation fields. The model of the structure and composition of the atmosphere is described, and the fundamental optical characteristics of absorption and scattering of radiation by the atmosphere are examined. The principles are studied...
Topics: CHEMICAL ENGINEERING, GELS, INORGANIC COMPOUNDS, COST ANALYSIS, PATENT POLICY, SILICON DIOXIDE
3,635
3.6K
texts
eye 3,635
favorite 1
comment 0
This document presents the postflight trajectory for the Apollo/Saturn 5 AS-506 flight. Included is an analysis of the orbital and powered flight trajectories of the launch vehicle, the free flight trajectories of the expended S-1C and S-2 stages, and the slingshot trajectory of the S-4B/1U. Trajectory dependent parameters are provided in earth-fixed launch site, launch vehicle navigation, and geographic polar coordinate systems. The time history of the trajectory parameters for the launch...
Topics: AEROTHERMODYNAMICS, SPACECRAFT MODULES, SPACECREWS, DESIGN ANALYSIS, ENVIRONMENT EFFECTS, LUNAR...
2,917
2.9K
Sep 1, 1975
09/75
by
Harley, K. G.; Odegard, P. A
texts
eye 2,917
favorite 0
comment 0
Aerodynamic data from static tests of a two-stage advanced technology fan designed to minimize noise are presented. Fan design conditions include delivery of 209.1kg/sec/sq m (42.85 lbm/sec/sq ft) specific corrected flow at an overall pressure ratio of 1.9 and an adiabatic efficiency of 85.3 percent. The 0.836m (2.74ft) diameter first stage rotor has a hub/tip ratio of 0.4 and 365.8m/sec (1200ft/sec) design tip speed. In addition to the moderate tip speed and pressure rise per stage, other...
Topics: INTERPLANETARY SPACE, STATISTICAL ANALYSIS, SHOCK WAVE PROPAGATION, SOLAR WIND, ECLIPTIC, NUMERICAL...
1,885
1.9K
Feb 1, 1997
02/97
by
Leutenegger, Scott T.; Edgington, Jeffrey M.; Lopez, Mario A
texts
eye 1,885
favorite 0
comment 0
In this paper we present the results from an extensive comparison study of three R-tree packing algorithms, including a new easy to implement algorithm. The algorithms are evaluated using both synthetic and actual data from various application domains including VLSI design, GIS (tiger), and computational fluid dynamics. Our studies also consider the impact that various degrees of buffering have on query performance. Experimental results indicate that none of the algorithms is best for all types...
Topics: COMBUSTION, SPRAYERS, COMPUTATIONAL GRIDS, COMBUSTION CHAMBERS, UNSTEADY FLOW, SUBSONIC FLOW,...
7,754
7.8K
May 1, 1989
05/89
by
Scholz, A. L.; Byrd, R. J
texts
eye 7,754
favorite 0
comment 0
No Abstract Available
Topics: FLUID MANAGEMENT, RETRAINING, SIMULATION, THRUST REVERSAL, VAPORS, GRAVITATIONAL EFFECTS, LIQUID...
7,209
7.2K
2000
2000
by
Siddiqi, Asif A
texts
eye 7,209
favorite 13
comment 0
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),...
6,143
6.1K
Nov 1, 1970
11/70
by
Savin, G. N
texts
eye 6,143
favorite 1
comment 0
Stress concentration around holes and fissures including stress-strain diagrams - bibliography
Topics: DEFORMATION, METEORITES, QUARTZ, X RAY DIFFRACTION, IMPACT DAMAGE, ROCKS, SHOCK WAVES
2,715
2.7K
texts
eye 2,715
favorite 0
comment 0
For abstract, see N74-22890.
Topics: BED REST, PATHOLOGICAL EFFECTS, PATIENTS, CARDIOVASCULAR SYSTEM, CLINICAL MEDICINE, MUSCULAR...
7,084
7.1K
texts
eye 7,084
favorite 0
comment 0
Cumulative listings of the R and D file data are presented. All Earth Resources Program information available at the Manned Spacecraft Center is in Vol. 1. Sensor data collected during flights over NASA test sites and from missions flown by subcontractors supporting the Earth Resources Survey Program are included in Vol. 2.
Topics: GAS DENSITY, INTERSTELLAR GAS, MILKY WAY GALAXY, ASTROPHYSICS, GALACTIC MASS, HYDROSTATICS, OORT...
3,799
3.8K
texts
eye 3,799
favorite 2
comment 0
No Abstract Available
Topics: ENGINE TESTS, NONDESTRUCTIVE TESTS, PERFORMANCE, PROPELLANTS, DEGRADATION, MECHANICAL PROPERTIES
3,954
4.0K
texts
eye 3,954
favorite 1
comment 0
A HANDBOOK COMPILATION OF CHEMICAL AND PHYSICAL PROPERTY TESTS DATA OBTAINED DURING QUALIFICATION AND RECEIVING INSPECTION TESTING OF NONMETALLIC MATERIALS FOR THE VIKING LANDER IS INTRODUCED. DATA COVER THE FOLLOWING MATERIALS: SEALANTS, POTTING COMPOUNDS, LUBRICANTS, PAINTS AND FINISHES, INKS, FILMS, ENCAPSULANTS, ELASTOMERS, STRUCTURAL PLASTICS, ABLATIVES, ADHESIVES, AND ELECTRICAL AND THERMAL INSULATION. THERMOCHEMICAL DATA SHOWING DEGRADATION AS A FUNCTION OF TEMPERATURE, FROM ROOM TO 500...
Topics: APPROACH, FLIGHT SIMULATORS, HEAD-UP DISPLAYS, SHORT TAKEOFF AIRCRAFT, DESCENT, FLIGHT PATHS,...
4,490
4.5K
texts
eye 4,490
favorite 0
comment 0
Procedures used in determining the energy efficiency and economy of a gasoline-electric hybrid taxi, an electric passenger car, and an electric van are described. Tabular and graphic data show results of driving cycle and constant speed tests, energy distribution to various components, efficiency of the components, and, for the hybrid vehicle, the emissions.
Topics: AIRCRAFT ENGINES, ENERGY CONSERVATION, ENGINE DESIGN, TURBINE ENGINES, AIRCRAFT NOISE, COST...
4,363
4.4K
Jun 20, 1967
06/67
by
Rocchio, J. J
texts
eye 4,363
favorite 0
comment 0
No abstract available
Topics: BIOLOGY, MAPPING, OCEANOGRAPHY, PROJECT MANAGEMENT, RESEARCH PROJECTS, COST ANALYSIS, ECONOMICS,...
1,781
1.8K
Dec 15, 1964
12/64
by
Berman, A. L.; Curkendall, D. W.; Liu, A. S.; Piaggi, E. G.; Sjogren, W. L.; Trask, D. W.; Winneberger, R. A.; Wollenhaupt, W. R., et al
texts
eye 1,781
favorite 0
comment 0
Flight path and tracking study of Ranger VII LUNAR probe
Topics: FLIGHT PATHS, RANGER LUNAR PROBES, RANGER 7 LUNAR PROBE, TRACKING (POSITION), FLIGHT PATH, RANGER...
288
288
Aug 1, 1968
08/68
by
Buhlman, A
texts
eye 288
favorite 0
comment 0
Measurement of blood circulation pressure and development of pulmonary edema in uremia
Topics: ATMOSPHERIC DENSITY, MICROWAVE PROBES, SATELLITE OBSERVATION, ATMOSPHERIC REFRACTION,...
3,874
3.9K
Aug 1, 1987
08/87
by
Campbell, William A., Jr.; Marriott, Richard S
texts
eye 3,874
favorite 1
comment 0
Outgassing data, derived from tests at 398 K (125 C) for 24 hours in vacuum as per ASTM E 595-77, 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: NASA PROGRAMS, PROJECT MANAGEMENT, PRODUCT DEVELOPMENT, PERSONNEL DEVELOPMENT
2,782
2.8K
1962
1962
by
Mc Gee, L. A.; Schmidt, S. F.; Smith, G. L
texts
eye 2,782
favorite 0
comment 0
Statistical filter theory application in optimal position and velocity estimation on board circumlunar vehicles
Topics: ESTIMATING, SPACECRAFT, STATISTICAL ANALYSIS, VELOCITY, SPACE VEHICLE, VELOCITY
6,207
6.2K
texts
eye 6,207
favorite 4
comment 0
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),...
391
391
2002
2002
by
Kincaid, Rex K.; Griffith, Michelle; Sykes, Ruth; Sobieszczanski-Sobieski, Jarosla
texts
eye 391
favorite 0
comment 0
In this manuscript we have examined an extension of BCB that encompasses a mix of continuous and quasi-discrete, as well as truly-discrete applications. FVe began by testing two refinements to the discrete version of BCB. The testing of midpoint versus fitness (Tables 1 and 2) proved inconclusive. The testing of discrete normal tails versus standard mutation showed was conclusive and demonstrated that the discrete normal tails are better. Next, we implemented these refinements in a combined...
Topics: BUCKLING, CURVATURE, ANISOTROPIC PLATES, THERMAL EXPANSION, ELASTIC PROPERTIES, LAMINATES, LOADS...
7,139
7.1K
texts
eye 7,139
favorite 11
comment 0
At a May 1981 ''Proseminar in Space History''held at the Smithsonian Institution's National Air and Space Museum (NASM) in Washington, DC, historians came together to consider the state of the discipline of space history. It was an historic occasion. The community of scholars interested in the history of spaceflight was not large; previously, well-meaning but untrained aficionados consumed with artifacts had dominated the field, to the exclusion of the larger context. At a fundamental level,...
Topics: AIRCRAFT ICING, FLIGHT ENVELOPES, TRAINING DEVICES, FLIGHT SIMULATORS, FLIGHT TRAINING,...
1,618
1.6K
Dec 15, 1967
12/67
by
Allen, J. D.; Leighton, R. B.; Murray, B. C.; Sharp, R. P.; Sloan, R. K
texts
eye 1,618
favorite 1
comment 0
Intensity and color calibration of Mariner 4 television pictures, and digital data correction procedures
Topics: COLOR PHOTOGRAPHY, SPACECRAFT STRUCTURES, DIGITAL DATA, MARINER 4 SPACE PROBE, TELEVISION CAMERAS,...
2,722
2.7K
1979
1979
by
Ragulskis, K. M.; Jurkauskas, A. Y.; Atstupenas, V. V.; Vitkute, A. Y.; Kulvec, A. P
texts
eye 2,722
favorite 1
comment 0
The analytical determination of vibrations and friction torque due to rotation, taking into consideration the hydrodynamic action of a lubricating oil film, and the determination of the elastic and damping characteristics of bearings and bearing assemblies are presented.
Topics: MASS DISTRIBUTION, QUARTZ CRYSTALS, SPACE SHUTTLES, SPACECRAFT CONTAMINATION, TEMPERATURE EFFECTS,...
1,987
2.0K
Aug 1, 1984
08/84
by
Jasperson, W. H.; Nastrom, G. D.; Holdeman, J. D
texts
eye 1,987
favorite 0
comment 0
A climatology of ozone for altitudes from FL190 to FL590 (19,000 to 59,000 ft) is presented. Climatological tables are given in two appendixes: one with d deg latitude resolution on a monthly basis, and one with 10 deg latitude resolution on a seasonal basis. Data were taken from 11,472 balloon-borne ozonesondes launched at 60 stations from 1963 to 1980 and from over 160,000 observations made by the Global Atmospheric Sampling Program on 4417 commercial airliner flights from 1975 to 1979. Case...
Topics: SPACECRAFT ANTENNAS, STEERABLE ANTENNAS, TDR SATELLITES, ALGORITHMS, ALIGNMENT, AMPLIFICATION,...
10,524
11K
Dec 1, 1985
12/85
by
Mcmurtrey, E. L
texts
eye 10,524
favorite 0
comment 0
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,...
1,781
1.8K
Jan 25, 1992
01/92
by
NON
texts
eye 1,781
favorite 0
comment 0
Impacts by Earth-approaching asteroids and comets pose a significant hazard to life and property. Although the annual probability of the Earth being struck by a large asteroid or comet is extremely small, the consequences of such a collision are so catastrophic that it is prudent to assess the nature of the threat and to prepare to deal with it. The first step in any program for the prevention or mitigation of impact catastrophes must involve a comprehensive search for Earth-crossing asteroids...
Topics: CRYOGENIC FLUID STORAGE, INSULATION, LUNAR BASES, MULTILAYER INSULATION, SPACE SHUTTLES,...
5,190
5.2K
Jun 1, 1971
06/71
by
KRASNOV, N. F., et al
texts
eye 5,190
favorite 5
comment 1
BASICS OF HIGH SPEED AERODYNAMIC THEORY AND CHARACTERISTICS OF GAS FLOWS FOR ROCKETS
favoritefavoritefavoritefavorite ( 1 reviews )
Topics: CHEMICAL PROPULSION, LOW THRUST PROPULSION, NUCLEAR PROPULSION, PROPULSION SYSTEM PERFORMANCE,...
4,834
4.8K
Feb 1, 1971
02/71
by
Fujita, T. T
texts
eye 4,834
favorite 2
comment 0
Results of the 1968 through 1970 Tornado Watch Experiment conducted jointly by NASA and NOAA suggested the necessity of characterizing individual tornadoes in order to improve the identity of tornado-producing nephsystems. An attempt was made, therefore, to categorize each tornado by its intensity and area. Fujita-scale wind and corresponding damage categories were devised to classify tornadoes as Gale (F0), Weak (F1), Strong (F2), Severe (F3), Devastating (F4), and Incredible (F5)....
Topics: MOISTURE CONTENT, SOILS, TENSIOMETERS, EVAPORATION, PRECIPITATION (METEOROLOGY)
7,833
7.8K
2004
2004
by
Dick, Steven J.; Strick, James E
texts
eye 7,833
favorite 7
comment 0
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...
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.
734
734
Oct 1, 1975
10/75
by
Leonov, A. A.; Lebedev, V. I
texts
eye 734
favorite 3
comment 0
Psychological compatibility among crew members of an interplanetary ship is examined under the conditions of group isolation, the extended effect of weightlessness on human mental processes, the effect of sensory and information starvation on the appearance of unusual mental states, emotional stress, and the rhythm of working and rest.
Topics: CLEAR AIR TURBULENCE, METEOROLOGICAL PARAMETERS, SYNOPTIC METEOROLOGY, MOUNTAINS, RAWINSONDES,...
4,419
4.4K
Nov 1, 1976
11/76
by
Essers, I
texts
eye 4,419
favorite 3
comment 0
A biography is presented of Max Valier, who is credited with popularizing interest in space travel and rocket research in Germany in the 1920's and 1930's. He died in an accident involving the testing of liquid rocket fuel propellants.
Topics: DYNAMIC RESPONSE, FLIGHT SIMULATION, ROTOR AERODYNAMICS, ROTOR BLADES (TURBOMACHINERY), TRANSIENT...
7,307
7.3K
texts
eye 7,307
favorite 0
comment 0
This NASA Conference Publication contains the proceedings of the Second NASA Aerospace Pyrotechnics Systems Workshop held at Sandia National Laboratories, Albuquerque, New Mexico, February 8-9, 1994. The papers are grouped by sessions: (1) Session 1 - Laser Initiation and Laser Systems; (2) Session 2 - Electric Initiation; (3) Session 3 - Mechanisms & Explosively Actuated Devices; (4) Session 4 - Analytical Methods and Studies; and (5) Session 5 - Miscellaneous. A sixth session, a panel...
Topics: ABSORPTION SPECTROSCOPY, SPECTRUM ANALYSIS, ELECTRIC ARCS, SHOCK WAVES, ARGON LASERS, TUNABLE...
6,188
6.2K
1966
1966
by
Leontev, U. N.; Vlasov, V. Z
texts
eye 6,188
favorite 5
comment 0
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,...
The Mars Sample Return (MSR) concept is a campaign of three missions: a sample acquisition/caching rover mission, a lander mission to fetch the cache and deliver it to Mars orbit via a rocket, and an orbiter mission that would capture the orbiting sample (OS) container and deliver it to Earth via an Earth Entry Vehicle (EEV). A fourth component is the Mars Returned Sample Handling (MRSH) element that would include a sample receiving facility (SRF) and a curation facility. These elements are...
Topics: Mars, NASA, Sample Return, Mission Concept Study, Decadal, Lander
14,340
14K
Sep 1, 1969
09/69
by
LIGUM, T. I
texts
eye 14,340
favorite 5
comment 3
AERODYNAMICS AND FLIGHT DYNAMICS OF TURBOJET AIRCRAFT
favoritefavoritefavoritefavorite ( 3 reviews )
Topics: ELECTRIC ARCS, ELECTRICAL RESISTIVITY, HIGH TEMPERATURE AIR, THERMAL CONDUCTIVITY, THERMAL PLASMAS,...
This paper describes the major questions about the atmosphere of Venus and the observations required to understand it. “How Does Venus atmosphere work?” A dedicated and renewed exploration effort is required to address this fundamental question. Key questions requiring new observations include: H
3,852
3.9K
1965
1965
by
Gerasimov, Ya. I.; Krestovnikov, A. N.; Shakhov, A. S
texts
eye 3,852
favorite 0
comment 0
Thermodynamic properties of tungsten, molybdenum, titanium, zirconium, niobium, and tantalum metal and compounds
Topics: MOLYBDENUM, ZIRCONIUM, MOLYBDENUM, NIOBIUM, TANTALUM, THERMODYNAMIC PROPERTY, TITANIUM, TUNGSTEN,...
5,355
5.4K
texts
eye 5,355
favorite 2
comment 0
No Abstract Available
Topics: AEROSPACE INDUSTRY, GOVERNMENT/INDUSTRY RELATIONS, TECHNOLOGY UTILIZATION, AEROSPACE ENGINEERING,...
3,054
3.1K
Feb 25, 1963
02/63
by
Potter, P. D
texts
eye 3,054
favorite 0
comment 0
Horn antenna with suppressed sidelobes and equal beamwidth - radiation characteristics of dual- mode conical horn
Topics: BEAMS (RADIATION), HORN ANTENNAS, SIDELOBE REDUCTION, SIDELOBES, HORN ANTENNA, RADIATION
4,285
4.3K
Nov 1, 1963
11/63
by
Anderson, T. P.; Springer, R. W.; Warder, R. C., Jr
texts
eye 4,285
favorite 1
comment 0
Physico-chemical diagnostics of plasmas - symposium
Topics: CONFERENCES, DIAGNOSIS, GAS DYNAMICS, PHYSICAL CHEMISTRY, PLASMAS (PHYSICS), CONFERENCE, PLASMA
3,908
3.9K
Nov 14, 1980
11/80
by
NON
texts
eye 3,908
favorite 0
comment 0
No Abstract Available
Topics: ENGINE DESIGN, STRUCTURAL ANALYSIS, TURBOFAN ENGINES, BYPASSES, COST ANALYSIS, LIFE CYCLE COSTS,...
514
514
Jun 1, 1975
06/75
by
LEONOV, A. A
texts
eye 514
favorite 1
comment 0
COSMONAUT A.A. LEONOV, DESIGNATED SOVIET CREW COMMANDER FOR THE ASTP FLIGHT, REVIEWS THE FLIGHT PROGRAM AND RELATES SOME OF HIS IMPRESSIONS OF THE HOUSTON SPACE CENTER. THE FLIGHT MISSION IS TO COMPLETE RENDEZVOUS AND DOCKING; THE SOLAR ECLIPSE EXPERIMENT IS ALSO MENTIONED. LEONOV BRIEFLY COMPARES THE SOYUZ AND APOLLO SPACECRAFT, DISCUSSING DIFFERENCES IN ASTRONAUT VERSUS COSMONAUT TRAINING. HE FEELS SOME APOLLO COMPONENTS ARE SUPERFLUOUS AND THAT SOME COMPONENTS ARE MORE FULLY EXECUTED ON THE...
Topics: DATA BASES, FLIGHT CREWS, IN-FLIGHT MONITORING, MAINTENANCE, MANAGEMENT PLANNING, SPACE FLIGHT
5,998
6.0K
texts
eye 5,998
favorite 0
comment 0
For abstract, see N75-20149.
Topics: COMPOSITE MATERIALS, DIFFRACTION PATTERNS, DISPLACEMENT MEASUREMENT, HOLOGRAPHY, LASERS, CERAMICS,...
Planetary Science Decadal Survey
1,102
1.1K
-
-
by
Michael L. Adams, Lori S. Glaze, Michael J. Amato, Charles L. Baker, and Gabriel Karpati
texts
eye 1,102
favorite 1
comment 0
NASA Headquarters commissioned the Goddard Space Flight Center's (GSFC) Architecture Design Lab with a rapid mission architecture study to support the National Research Council's 2010 Planetary Decadal Survey Inner Planets Panel. The purpose of the study was to determine whether a Venus mission with surface, or near surface, mobility and realistic operational lifetime could achieve meaningful surface science at two or more independent locations separated by several kilometers on a budget...
Topics: Venus Mobile Explorer, Venus, Concept, Mission Study, Decadal, NASA
2,197
2.2K
Jul 1, 1965
07/65
by
Engelbart, D. C.; English, W. K.; Huddart, B
texts
eye 2,197
favorite 0
comment 0
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...
2,420
2.4K
Aug 1, 1970
08/70
by
Mc Carty, R. D
texts
eye 2,420
favorite 0
comment 0
Thermodynamic properties of helium at high pressure from 2 to 1500 K
Topics: CONDUCTING FLUIDS, MAGNETIC FIELDS, MAGNETOHYDRODYNAMICS, TURBULENT FLOW, NAVIER-STOKES EQUATION,...
2,847
2.8K
texts
eye 2,847
favorite 0
comment 0
Survey of accidents at air separation plants
Topics: JOINTS (JUNCTIONS), PRESSURE SUITS, SEALERS, FLEXIBILITY, INFLATABLE STRUCTURES, PROTECTIVE CLOTHING
1,803
1.8K
May 1, 1975
05/75
by
POLYAKHOVA, Y. N
texts
eye 1,803
favorite 2
comment 0
A DETAILED SELECTION OF PROBLEMS ON THE DYNAMICS OF THE MOTION OF A MATERIAL POINT ACTED ON BY A CENTRAL GRAVITATIONAL FORCE, IN PARTICULAR, THE DYNAMICS OF SPACE FLIGHT IS PRESENTED ALONG WITH SEVERAL PROBLEMS ON THE MOTION OF A POINT ACTED ON BY CENTRAL NONGRAVITATIONAL FORCES. TOPICS COVERED INCLUDE KEPLER'S LAWS, BINET'S FORMULAS FOR CENTRAL FORCES, THE ENERGY BALANCE AND VELOCITY ALONG A SPACE TRAJECTORY, TIME OF MOTION ALONG A SPACE TRAJECTORY, CONDITIONS FOR THE EXISTENCE OF ELLIPTICAL...
Topics: LATTICE PARAMETERS, POISSON EQUATION, SOLID STATE PHYSICS, SUM RULES, CESIUM COMPOUNDS, CHLORIDES,...
312
312
Apr 1, 1975
04/75
by
DEBIJADJI, R
texts
eye 312
favorite 0
comment 0
PAST EXPERIENCE INDICATES THAT HUMAN STAY IN WEIGHTLESSNESS DURING SPACE FLIGHT INDUCES SOME CHANGES IN THE ASTRONAUT'S BODY FUNCTIONS. THESE CHANGES BECOME ESPECIALLY NOTICEABLE AFTER RETURN TO EARTH GRAVITY CONDITIONS. HOWEVER, THESE CHANGES ARE REVERSIBLE. IN ORDER TO PREVENT THE DECONDITIONING OF THE ORGANISM IN ZERO GRAVITY, CERTAIN COUNTERMEASURES ARE TAKEN. CERTAIN PROTECTIVE TECHNIQUES CAN BE USED TO FACILITATE THE READAPTATION OF THE HUMAN BODY AFTER LANDING ON EARTH.
Topics: CYLINDRICAL BODIES, HEAT TRANSFER, REYNOLDS NUMBER, TURBULENT FLOW, DATA ACQUISITION, FLOW...
Live Music Archive
Librivox Free Audio
Metropolitan Museum
Cleveland Museum of Art
Internet Arcade
Console Living Room
Books to Borrow
Open Library
TV News
Understanding 9/11
