The requirement to produce high level acoustic noise fields with increasing accuracy in environmental test facilities dictates that a more precise understanding is required of the factors controlling nonlinear noise generation. Details are given of various nonlinear effects found in acoustic performance data taken from the IAR Spacecraft Acoustic Chamber. This type of data has enabled the IAR to test large spacecraft to relatively tight acoustic tolerances over a wide frequency range using...
Topics: NASA Technical Reports Server (NTRS), AERODYNAMIC NOISE, NOISE GENERATORS, NOISE SPECTRA,...
An experimental effort to characterize an existing 5-eV neutral atomic oxygen beam facility being developed at Princeton Plasma Physics Laboratory is described. This characterization effort includes atomic oxygen flux and flux distribution measurements using a catalytic probe, energy determination using a commercially designed quadrupole mass spectrometer (QMS), and the exposure of oxygen-sensitive materials in this beam facility. Also, comparisons were drawn between the reaction efficiencies...
Topics: NASA Technical Reports Server (NTRS), ATOMIC BEAMS, EARTH ORBITAL ENVIRONMENTS, ENVIRONMENT...
This research focuses on the strength and creep performance of SiC fiber-reinforced SiC ceramic matrix composite (CMC) environmental barrier coating (EBC) systems under complex simulated engine environments. Tensile-strength and stress-rupture testing was conducted to illustrate the material properties under isothermal and thermal gradient conditions. To determine material durability, further testing was conducted under exposure to thermal cycling, thermal gradients and simulated combustion...
Topics: NASA Technical Reports Server (NTRS), DURABILITY, CREEP RUPTURE STRENGTH, CERAMIC MATRIX...
501
501
Jul 21, 2010
07/10
by
Goglia, G. L.; Chermahini, R. G
texts
eye 501
favorite 0
comment 0
Fatigue cracks are a major problem in designing structures subjected to cyclic loading. Cracks frequently occur in structures such as aircraft and spacecraft. The inspection intervals of many aircraft structures are based on crack-propagation lives. Therefore, improved prediction of propagation lives under flight-load conditions (variable-amplitude loading) are needed to provide more realistic design criteria for these structures. The main thrust was to develop a three-dimensional, nonlinear,...
Topics: COATINGS, SPACE ENVIRONMENT SIMULATION, SPACE SHUTTLE ORBITERS, COMPOSITE MATERIALS, ORGANIC...
Hot structures testing have been going on since the early 1960's beginning with the Mach 6, X-15 airplane. Early hot structures test programs at NASA-Ames-Dryden focused on operational testing required to support the X-15 flight test program, and early hot structures research projects focused on developing lab test techniques to simulate flight thermal profiles. More recent efforts involved numerous large and small hot structures test programs that served to develop test methods and measurement...
Topics: NASA Technical Reports Server (NTRS), AEROTHERMODYNAMICS, AIRCRAFT STRUCTURES, FLIGHT TESTS, HIGH...
Atomic oxygen (AO) erodes most organic materials. and ultraviolet radiation embrittles polymers. A previous study indicated untreated polymers such as ultra-high molecular weight polyethylene (UHMWPE) are severely degraded when exposed to AO. This test series was performed to determine the effect of AO and UV on the mechanical integrity of tether materials that were treated with AO-protective coatings. Three coating systems were evaluated for their ability to protect the underlying material...
Topics: NASA Technical Reports Server (NTRS), SPACE ENVIRONMENT SIMULATION, ENVIRONMENT EFFECTS, OXYGEN...
The performance capability was assessed of operators performing simulated space tasks using manipulator systems which had compliance and force feedback varied. Two manipulators were used, the E-2 electromechanical man-equivalent (force, reach, etc.) master-slave system and a modified CAM 1400 hydraulic master-slave with 100 lbs force capability at reaches of 24 ft. The CAM 1400 was further modified to operate without its normal force feedback. Several experiments and simulations were performed....
Topics: NASA Technical Reports Server (NTRS), MANIPULATORS, PERFORMANCE TESTS, SPACE ENVIRONMENT...
EnviroNET is a centralized depository for technical information on environmentally induced interactions likely to be encountered by spacecraft in both low-altitude and high-altitude orbits. It provides a user-friendly, menu-driven format on networks that are connected globally and is available 24 hours a day - every day. The service pools space data collected over the years by NASA, USAF, other government research facilities, industry, universities, and the European Space Agency. This...
Topics: NASA Technical Reports Server (NTRS), COMPUTER GRAPHICS, ENVIRONMENT SIMULATION, MAGNETIC FIELDS,...
The Cryogenic Boil-Off Reduction System was tested with LH2 and LOX in a vacuum chamber to simulate space vacuum and the temperatures of low Earth orbit. Testing was successful and results validated the scaling study model that predicts active cooling reduces upper stage cryogenic propulsion mass for loiter periods greater than 2 weeks.
Topics: NASA Technical Reports Server (NTRS), CRYOGENICS, CRYOGENIC ROCKET PROPELLANTS, BOILING, PROPELLANT...
A widely used land surface model, the Variable Infiltration Capacity (VIC) model, is coupled with a newly developed hierarchical dominant river tracing-based runoff-routing model to form the Dominant river tracing-Routing Integrated with VIC Environment (DRIVE) model, which serves as the new core of the real-time Global Flood Monitoring System (GFMS). The GFMS uses real-time satellite-based precipitation to derive flood monitoring parameters for the latitude band 50 deg. N - 50 deg. S at...
Topics: NASA Technical Reports Server (NTRS), REAL TIME OPERATION, FLOODS, ESTIMATES, ENVIRONMENT MODELS,...
427
427
Jun 21, 2010
06/10
by
Heer, E.; Trubert, M. R
texts
eye 427
favorite 0
comment 0
Analysis of space vehicle structures using transfer function concept
Topics: ENVIRONMENT SIMULATION, PHOTOCATHODES, LUNAR LUMINESCENCE, MINERALS, QUANTITATIVE ANALYSIS, SPACE...
247
247
Jun 21, 2010
06/10
by
Argoud, M. J
texts
eye 247
favorite 0
comment 0
Design, and instrumentation of modified space environment simulator for spacecraft testing
Topics: MEASURING INSTRUMENTS, SPACE ENVIRONMENT SIMULATION, SPACECRAFT CONTROL, STRUCTURAL DESIGN, SPACE...
143
143
Jun 21, 2010
06/10
by
Errett, D. D.; Peterson, E. W
texts
eye 143
favorite 0
comment 0
Photomultiplier detector of Canopus for spacecraft attitude control
Topics: ENVIRONMENT SIMULATION, LIQUID SLOSHING, MICROGRAVITY, PROPELLANT TANKS, BAFFLES, MATHEMATICAL...
The development of a computer problem solving system is reported that considers physical problems faced by an artificial robot moving around in a complex environment. Fundamental interaction constraints with a real environment are simulated for the robot by visual scan and creation of an internal environmental model. The programming system used in constructing the problem solving system for the simulated robot and its simulated world environment is outlined together with the task that the...
Topics: NASA Technical Reports Server (NTRS), COMPUTERIZED SIMULATION, ENVIRONMENT SIMULATION, PROBLEM...
In the present paper, we explore effects on the human of exposure to a visual virtual environment which has been enslaved to simulate the human user's head movements or eye movements. Specifically, we have studied the capacity of our experimental subjects to maintain stable spatial orientation in the context of moving their entire visible surroundings by using the parameters of the subjects' natural movements. Our index of the subjects' spatial orientation was the extent of involuntary sways of...
Topics: NASA Technical Reports Server (NTRS), COMPUTERIZED SIMULATION, ENVIRONMENT SIMULATION, EYE...
Particle impact tests were performed on three types of orbiter surface with a micrometeoroid facility. The test equipment electrostatically accelerated micron sized particles to high velocities simulating micrometeoroid impacts. Test particles were titanium diboride with typical velocities in the range 1 to 2.3 km x sec/1 and equivalent particle diameters in the range 4 to 16 microns. Impact angles to the material surface were 90, 60 and 30 degrees. The particle impact sites were located on the...
Topics: NASA Technical Reports Server (NTRS), HYPERVELOCITY IMPACT, IMPACT TESTS, MICROMETEORITES, SOLID...
Large, high voltage space power systems are proposed for future space missions. These systems must operate in the charged-particle environment of space and interactions between this environment and the high voltage surfaces are possible. Ground simulation testing indicated that dielectric surfaces that usually surround biased conductors can influence these interactions. For positive voltages greater than 100 volts, it has been found that the dielectrics contribute to the current collection...
Topics: NASA Technical Reports Server (NTRS), AEROSPACE ENVIRONMENTS, CHARGED PARTICLES, SPACE MISSIONS,...
The development of a general rock/soil model capable of simulating in a self consistent manner the mechanical and exposure history of an assemblage of solid and loose material from submicron to planetary size scales, applicable to lunar and other space exposed planetary surfaces is discussed. The model was incorporated into a computer code called MESS.2 (model for the evolution of space exposed surfaces). MESS.2, which represents a considerable increase in sophistication and scope over previous...
Topics: NASA Technical Reports Server (NTRS), AEROSPACE ENVIRONMENTS, GEOPHYSICS, LUNAR SURFACE, SPACE...
Spacecraft in geosynchronous orbits are known to become charged to large negative potentials during the local midnight region of the satellite orbit. Such discharges have been studied by the electron beam irradiation of dielectric samples in a vacuum environment. In addition to static measurements and photographic examination of the puncture discharges in Teflon samples, the transient characteristics of the electrical discharges are determined from oscillographs of voltage and current and by...
Topics: NASA Technical Reports Server (NTRS), ELECTRIC DISCHARGES, ELECTROMAGNETIC INTERFERENCE, ION...
Laboratory experiments designed to uncover mechanistic information about the spectral and spatial characteristics of shuttle glow were conducted. The luminescence was created when a pulse of O atoms traveling at orbital velocities was directed toward NO molecules previously adsorbed to aluminum, nickel, and Z306 Chemglaz (a common baffle black) coated surfaces held at various temperatures. Spectral and spatial measurements were made using a CCD imaging spectrometer. Corroborative spectral...
Topics: NASA Technical Reports Server (NTRS), ATOMIC BEAMS, EARTH ORBITAL ENVIRONMENTS, ENVIRONMENT...
The 4th International Conference on Integrating GIS and Environmental Modeling (GIS/EM4) was convened in Banff, Canada, September 2-8, 2000 at The Banff Centre for Conferences. The meeting's purpose, like it's predecessors was to reformulate, each three to four years, the collaborative research agenda for integrating spatio-temporal analysis with environmental simulation modeling.
Topics: NASA Technical Reports Server (NTRS), ENVIRONMENT MODELS, ENVIRONMENT SIMULATION, CANADA,...
The fourth ASSESS Spacelab simulation mission utilizing a Lear Jet aircraft featured trained experiment operators (EOs) in place of the participating scientists, to simulate the role and functions of payload specialists in Spacelab who may conduct experiments developed by other scientists. The experiment was a broadband infrared photometer coupled to a 30-cm, open port, IR telescope. No compromises in equipment design or target selection were made to simplify operator tasks; the science goals...
Topics: NASA Technical Reports Server (NTRS), LEAR JET AIRCRAFT, SPACE ENVIRONMENT SIMULATION, SPACELAB,...
The degradation of glass used on space structures due to electromagnetic and particulate radiation in a space environment was evaluated. The space environment was defined and a simulated space exposure apparatus was constructed. Four optical materials were exposed to simulated solar and particulate radiation in a space environment. Sapphire and fused silica experienced little change in transmittance, while optical crown glass and ultra low expansion glass darkened appreciably. Specimen...
Topics: NASA Technical Reports Server (NTRS), GLASS, OPTICAL EQUIPMENT, OPTICAL MATERIALS, RADIATION...
A great deal of effort in the search for life off-Earth in the past 20+ years has focused on Mars via a plethora of space and ground based missions. While there is good evidence that surface liquid water existed on Mars in substantial quantities, it is not clear how long such water existed. Most studies point to this water existing billions of years ago. However,those familiar with the Faint Young Sun hypothesis for Earth will quickly realize that this problem is even more pronounced for Mars....
Topics: NASA Technical Reports Server (NTRS), VENUS (PLANET), HABITABILITY, SOLAR SYSTEM, PLANETARY...
No abstract available
Topics: NASA Technical Reports Server (NTRS), ENVIRONMENT EFFECTS, ANOMALIES, DATA BASES, EARTH ORBITAL...
A device for the production of low energy (3 to 10 eV) neutral atomic beams for surface modification studies is described that reproduces the flux of atomic oxygen in low Earth orbit. The beam is produced by the acceleration of plasma ions onto a negatively biased plate of high-Z metal; the ions are neutralized and reflected by the surface, retaining some fraction of their incident kinetic energy, forming a beam of atoms. The plasma is generated by a coaxial RF exciter which produces a...
Topics: NASA Technical Reports Server (NTRS), ATOMIC BEAMS, EARTH ORBITAL ENVIRONMENTS, ENVIRONMENT...
In the last four years we have been working to investigate the formation of molecular hydrogen on surfaces of materials of astrophysical interest, such as silicates, carbonaceous particles and ices, and in conditions approximating the ones present in a variety of astrophysical environments. Our experimental studies - the first of their kind and complemented with computer simulations and theoretical analyses - have given not only hydrogen recombination rates under different ISM conditions, but...
Topics: NASA Technical Reports Server (NTRS), HYDROGEN RECOMBINATIONS, COMPUTERIZED SIMULATION, COSMIC...
Introduction: The use of pulsed laser irradiation to simulate the short duration, high-energy conditions characteristic of micrometeorite impacts is now an established approach in experimental space weathering studies. The laser generates both melt and vapor deposits that contain nanophase metallic Fe (npFe(sup 0)) grains with size distributions and optical properties similar to those in natural impact-generated melt and vapor deposits. There remains uncertainty, however, about how well lasers...
Topics: NASA Technical Reports Server (NTRS), METEORITIC COMPOSITION, METEORITIC MICROSTRUCTURES, OLIVINE,...
The concept presented is intended to enhance astronaut assembly of truss structure that is either too large or complex to fold for efficient Shuttle delivery to orbit. The potential of augmented astronaut assembly is illustrated by applying the result of the tests to a barebones assembly of a truss structure. If this structure were assembled from the same nestable struts that were used in the Mobile Work Station assembly tests, the spacecraft would be 55 meters in diameter and consist of about...
Topics: NASA Technical Reports Server (NTRS), AEROSPACE ENGINEERING, LARGE SPACE STRUCTURES, ORBITAL...
Specific target processes were classified as to the chemical, chemical-physical, and biological reactions and toxic effects of solid rocket emissions within selected ecosystems at Kennedy Space Center. Exposure of Citris seedlings, English peas, and bush beans to SRM exhaust under laboratory conditions demonstrated reduced growth rates, but at very high concentrations. Field studies of natural plant populations in three diverse ecosystems failed to reveal any structural damage at the...
Topics: NASA Technical Reports Server (NTRS), ECOSYSTEMS, ENVIRONMENT EFFECTS, EXHAUST GASES, SOLID ROCKET...
The mission of the Life Science Division at the NASA Ames Research Center is to investigate the effects of gravity on living systems in the spectrum from cells to humans. The range of these investigations is from microgravity, as experienced in space, to Earth's gravity, and hypergravity. Exposure to microgravity causes many physiological changes in humans and other mammals including a headward shift of body fluids, atrophy of muscles - especially the large muscles of the legs - and changes in...
Topics: NASA Technical Reports Server (NTRS), AEROSPACE MEDICINE, CENTRIFUGES, EARTH GRAVITATION,...
The NASA Glenn Research Center has been conducting in-house testing in support of NASA's Lithium-Ion Cell Verification Test Program, which is evaluating the performance of lithium-ion cells and batteries for NASA mission operations. The test program is supported by NASA's Office of Aerospace Technology under the NASA Aerospace Flight Battery Systems Program, which serves to bridge the gap between the development of technology advances and the realization of these advances into mission...
Topics: NASA Technical Reports Server (NTRS), LITHIUM BATTERIES, SPACECRAFT POWER SUPPLIES, ELECTRIC...
Many contemporary spacecraft materials exhibit cathodoluminescence when exposed to electron flux from the space plasma environment. A quantitative, physics-based model has been developed to predict the intensity of the total glow as a function of incident electron current density and energy, temperature, and intrinsic material properties. We present a comparative study of the absolute spectral radiance for more than 20 types of dielectric and composite materials based on this model which spans...
Topics: NASA Technical Reports Server (NTRS), CATHODOLUMINESCENCE, COMPOSITE MATERIALS, DIELECTRICS, GLASS,...
Tests were conducted in the launch phase simulator test facility, with the Orbiting Geophysical Observatory structural model and the Nimbus-type shroud being used as test items. Data are given for the acoustic vibratory response of the spacecraft as the ambient pressure external to the shroud was reduced. The results show that at most spacecraft locations, the reduction in ambient pressure causes a significant reduction in the vibration response. There are, however, certain locations on the...
Topics: NASA Technical Reports Server (NTRS), ACOUSTIC PROPAGATION, DYNAMIC RESPONSE, SHROUDS, SPACECRAFT...
Testing has demonstrated the compatibility of the all-silica surface insulation system to a variety of space shuttle orbiter environmental aspects for launch, on-orbit, and special reentry conditions. Among the more important results are the success of the cold soak tests, which indicate the suitability of the foam/bond attachment system with a 2 mm thick foam pad for strain isolation, and the reentry temperature overshoot tests (to 1924 K), which show that this system can tolerate considerable...
Topics: NASA Technical Reports Server (NTRS), PERFORMANCE TESTS, SILICATES, SPACE ENVIRONMENT SIMULATION,...
The existence of an at least moderately complex organic chemistry on Titan is stipulated based on clear evidence of methane, and at least presumptive evidence of hydrogen in its atmosphere. The ratio of methane to hydrogen is the highest of any atmosphere in the solar system. Irradiation of hydrogen/methane mixtures produces aromatic and aliphatic hydrocarbons. A very reasonable hypothesis assumes that the red cloud cover of Titan is made of organic chemicals. Two-carbon hydrocarbons...
Topics: NASA Technical Reports Server (NTRS), ATMOSPHERIC COMPOSITION, ENVIRONMENT SIMULATION, ORGANIC...
Ground-based environmental durability tests have indicated that exposing materials in accelerated tests to known spacecraft mission degradation sources predicted by an environmental model does not simulate the extent of damage that occurs in the space environment. The reasons for this may include the complex nature of the space environment, which is not simulated completely in any ground-based facility, the extreme differences in exposure rates in space and in ground tests, and inaccuracies in...
Topics: NASA Technical Reports Server (NTRS), SPACE ENVIRONMENT SIMULATION, ENVIRONMENTAL TESTS,...
An apparatus for simulating the environment at the surface of Mars has been developed. Within the apparatus, the pressure, gas composition, and temperature of the atmosphere; the incident solar visible and ultraviolet (UV) light; and the attenuation of the light by dust in the atmosphere can be simulated accurately for any latitude, season, or obliquity cycle over the entire geological history of Mars. The apparatus also incorporates instrumentation for monitoring chemical reactions in the...
Topics: NASA Technical Reports Server (NTRS), MARS ENVIRONMENT, MARS SURFACE, ENVIRONMENT SIMULATION,...
A systems level mechanisms test was conducted on the Orbital Sciences Corp.'s Transfer Orbit Stage (TOS). The TOS is a unique partially reusable transfer vehicle which will boost a satellite into its operational orbit from the Space Shuttle's cargo bay. The mechanical cradle and tilt assemblies will return to earth with the Space Shuttle while the Solid Rocket Motor (SRM) and avionics package are expended. A mechanisms test was performed on the forward cradle and aft tilting assemblies of the...
Topics: NASA Technical Reports Server (NTRS), ORBIT TRANSFER VEHICLES, PNEUMATIC EQUIPMENT, SPACE...
The Institute of Environmental Sciences' Seventeenth Space Simulation Conference, 'Terrestrial Test for Space Success' provided participants with a forum to acquire and exchange information on the state of the art in space simulation, test technology, atomic oxygen, dynamics testing, contamination, and materials. The papers presented at this conference and the resulting discussions carried out the conference theme of 'terrestrial test for space success.'
Topics: NASA Technical Reports Server (NTRS), CONFERENCES, ENVIRONMENT EFFECTS, SPACE ENVIRONMENT...
The transport of infrared radiation in a single cuboidal cloud using a vertical two steam approximation was modeled. The emittance of the top face of the model cloud is always less than that for a plane parallel cloud of the same optical depth. The hemisphere flux escaping from the cloud top has a gradient from the center to the edges which brighten when the cloud is over warmer ground. Cooling rate calculations in the 8 to 13.6 micrometer region show that there is cooling from the sides of the...
Topics: NASA Technical Reports Server (NTRS), CONVECTION CLOUDS, INFRARED RADIATION, MICROWAVE SCATTERING,...
Four optical materials were exposed to simulated solar and particulate radiation in a space environment. Sapphire and fused silica experienced little change in transmittance while optical crown glass and ultra low expansion glass darkened appreciably. A complete analysis of the 500 hour simulated space exposure test was conducted. Additionally, studies were performed to aid in sample selection for a 100 hour simulated exposure test.
Topics: NASA Technical Reports Server (NTRS), LONG TERM EFFECTS, OPTICAL MATERIALS, RADIATION DAMAGE,...
In every-day listening the auditory event perceived by a listener is determined not only by the sound signal that a sound emits but also by a variety of environmental parameters. These parameters are the position, orientation and directional characteristics of the sound source, the listener's position and orientation, the geometrical and acoustical properties of surfaces which affect the sound field and the sound propagation properties of the surrounding fluid. A complete set of these...
Topics: NASA Technical Reports Server (NTRS), AUDITORY PERCEPTION, BINAURAL HEARING, ENVIRONMENT...
This volume (Part 1 of 3) is a compilation of papers presented at the Third Long Duration Exposure Facility (LDEF) Post-Retrieval Symposium. The papers represent the data analysis of the 57 experiments flown on the LDEF. The experiments include materials, coatings, thermal systems, power and propulsion, science (cosmic ray, interstellar gas, heavy ions, micrometeoroid, etc.), electronics, optics, and life science. In addition, papers on preliminary data analysis of EURECA, EOIM-3, and other...
Topics: NASA Technical Reports Server (NTRS), AEROSPACE ENVIRONMENTS, CONFERENCES, EURECA (ESA), IONIZING...
A new 20 K helium refrigerator installed at NASA Johnson Space Center's Space Environment Simulation Laboratory (SESL) was successfully commissioned and tested in 2012. The refrigerator is used to create a deep space environment within SESL s Chamber A to perform ground testing of the James Webb Space Telescope. The chamber previously and currently still has helium cryopumping panels (CPP) and LN2 shrouds used to create Low Earth Orbit environments. Now with the new refrigerator and new helium...
Topics: NASA Technical Reports Server (NTRS), AEROSPACE ENVIRONMENTS, REFRIGERATORS, JAMES WEBB SPACE...
No abstract available
Topics: NASA Technical Reports Server (NTRS), SPACE EXPLORATION, AEROSPACE ENVIRONMENTS, PLANETARY BASES,...
151
151
May 23, 2011
05/11
by
Walker, Robert M
texts
eye 151
favorite 0
comment 0
Secondary ion mass spectrometry (SIMS) chemical and isotopic analysis was performed on impacts on flat targets flow on the Long Duration Exposure Facility (LDEF) with the purpose of obtaining data useful for the design of the Cosmic Dust Collector Facility (CDCF). Initial examination of experiment AO187-2, an array of 237 capture cells with each cell consisting of high purity Ge plates separated slightly from metallized thin plastic entrance foils, had demonstrated the superior sensitivity of...
Topics: ELECTRIC PROPULSION, NUMERICAL CONTROL, PLASMA POTENTIALS, ION ENGINES, RESEARCH FACILITIES, SPACE...
Coefficient of friction measurements were made for six unlubricated metal couples exposed to the space environment aboard the OV-1-13 spacecraft and exposed to laboratory vacuum. Materials studied included mutually soluble, partially soluble, and insoluble metal combinations. Two samples of each material couple were tested in space and in the laboratory using the disk and rider technique. Linear velocity was 0.10 cm/s (2.5 in/min) and rider normal load was 4.45 N (1 lb) for the gold versus...
Topics: NASA Technical Reports Server (NTRS), COEFFICIENT OF FRICTION, METAL SURFACES, SPACECRAFT...
This study is a further investigation of space-exposed samples recovered from the LDEF satellite and the Franco-Russian 'Aragatz' dust collection experiment on the Mir Space Station. Impact craters with diameters ranging from 1 to 900 micron were found on the retrieved samples. Elemental analysis of residues found in the impact craters was carried out using Energy Dispersive X-ray spectrometry (EDX). The analyses show evidence of micrometeoroid and orbital debris origins for the impacts. The...
Topics: NASA Technical Reports Server (NTRS), EARTH ORBITAL ENVIRONMENTS, ENVIRONMENT SIMULATION, IMPACT...
In microgravity conditions mobility is greatly enhanced and body stability is difficult to achieve. Because of these difficulties, optimum placement and accessibility of objects and controls can be critical to required tasks on board shuttle flights or on the proposed space station. Anthropometric measurement of the maximum reach of occupants of a microgravity environment provide knowledge about maximum functional placement for tasking situations. Calculations for a full body, functional reach...
Topics: NASA Technical Reports Server (NTRS), ANTHROPOMETRY, COMPUTER GRAPHICS, COMPUTERIZED SIMULATION,...
