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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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An overview of the Mars Express/NASA Project at JPL is presented. The topics include: 1) Mars Express Mission Experiments and Investigators; 2) Mars Advanced Radar for Subsurface and Ionospheric Soundig (MARSIS) Overview; 3) MARSIS Experiment Overview; 4) Interoperability Concept; 5) Mars Express Science Operations; 6) Mars Express Schedule (2003-2007);
Determination of space vehicle range and orbit is aided by a stable subsurface oceanic transpounder. This device consists of a buoy held below the surface by a three-point system of anchors and mooring lines with an above surface antenna.
Power from geothermal deposits on earth is an established fact, with plant capacities ranging from a few kilowatts to several hundred megawatts. The increasing evidence for contemporary volcanic and fumarolic activity on the moon lends strong support to the validity of the concepts of utilizing geothermal fluids as a source of lunar power. Geothermal energy, whatever the size of installation desired, will probably not be an energy source during early exploratory operations, because of the inherent uncertainty in developing natural resources. On the other hand, the attractiveness of geothermal concepts with their abundant potential for byproduct fuel and life-support production, plus the potential for large continuous power outputs, suggests chat the location and testing of areas of geothermal potential should be an early goa] for lunar exploration efforts. This paper briefly describes the chemical and structural properties of geothermal deposits and outlines the differences expected between lunar and terrestrial deposits and their surface expressions. The problems of finding geothermal deposits, and of then deciding upon the probable subsurface exploitive testing for initial production are suggested and the problems inherent in large-scale geothermal development and utilization are indicated.
Geology of Moses Rock intrusion studied as analog to subsurface of lunar rills
Measurements that could be carried out during traverse of moon in Kepler-Encke region to determine subsurface structure, surface density and chemical composition, etc
Three-dimensional contact analog display system development for use in surface, subsurface, air, and space vehicles
Subsurface residual stress measurements on inner races of SAE 52100 steel ball bearings
Test program is used in the design and fabrication of special graduated aluminum penetrometers. The program evaluates the threshold detection capabilities of a fixed radiographic technique in detecting surface and subsurface cracks in one-quarter inch aluminum welds. The radiographic films were evaluated and the threshold detection capabilities defined.
Design and development of Apollo lunar surface drill systems to be used for emplacement of lunar subsurface heat flow probes
Lunar studies on subsurface, surface, atmosphere, and cosmic regions
Pure ammonium perchlorate single crystal self deflagration, determining energy transfer mechanisms from pressure effects, combustion characteristics and subsurface profile
Lunar localized subsurface mass concentration association with circular maria, noting two large mascon basins from gravity data and orbital photography
Burning solid ammonium perchlorate composite propellants surface structure observation to assess heterogeneous or subsurface reactions, using scanning electron microscope
Polarized and depolarized radar maps of moon, attributing anomalies and average diffuse component of echoes to scattering behavior of surface and subsurface rocks
Mercury disk temperature from microwave spectrum analysis, proposing subsurface greenhouse effect
Ultrasonic detection of tooth surface layer demineralization, noting surface and subsurface enamel structural differences
Rotating gravity gradiometer for simulated terrain mapping with subsurface density fluctuations
Mercury microwave and IR observations interpreted for thermophysical models for planetary subsurface, discussing rotation and heating