A program for computing satellite ground traces and vehicle-sun orientation
Computer program to find projection of satellite on surface of rotating earth and vehicle-sun orientation
SATELLITE↗
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Results for “sun”
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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Fine sun tracker for advanced orbiting solar observatory.
Fine sun tracker for advanced orbiting solar observatory /aoso/
SATELLITE INSTRUMENTATION↗
Determination of physical parameters of sun's atmosphere by the method of curves of growth <ob opredelenii fizicheskikh parametrov atmosfery solntsa metodom krivykh rosta<
Physical parameters of sun atmosphere by method of curves of growth
SUN↗
Rocket observations of the structure and dynamics of the mesosphere during the quiet sun period
Mesosphere structure and dynamics during quiet sun period from rocket observations
STRUCTURE↗
Sun tracker control system
Sun tracker control system for thermionic power converter for spacecraft power supply.
CONTROL SYSTEM↗
Relationship of the cosmic ray intensity to the magnetic activity and radio emission of the sun
Relationship of cosmic ray intensity to magnetic activity and radio emission of sun
RADIO EMISSION↗
Use of mean elements to calculate the position of the sun, moon and earth
Tabulated formulae for calculating mean orbital elements of Earth, Moon, and Sun during 12-hour ephemeris time
SUN↗
A hypothetical four-body problem and its applications - An estimate of the effect of the moon and the sun on the syncom orbit
Hypothetical four-body problem applied to estimate effects of moon and sun on Syncom orbit
SYNCOM SATELLITE↗
Fine sun tracker for Advanced Orbiting Solar Observatory
Precision sun tracking sensor for static and dynamic orientation of orbiting solar observatory
SOLAR SENSOR↗
Investigation of the relation between solar variations and weather on earth as shown by study of simultaneous data from the sun, Mariner II, near-earth satellites and the atmosphere below the mesosphere
Relation of solar variations and wind to weather on earth shown by data from sun, Mariner II, ATMOSPHERE, and near-earth satellites
SOLAR WIND↗
Principal scientific problems for the International Years of the Quiet Sun
Geophysics project to study solar and terrestrial phenomenon - International Quiet Sun Year
INTERNATIONAL QUIET SUN YEAR /IQSY/↗
Orbit trim propulsion requirements for sun synchronous satellites
Orbit trim propulsion requirements for sun synchronous satellites
SUN↗
Lyman-alpha emission from the sun near solar minimum.
Lyman alpha emission from sun near solar minimum
SOUNDING ROCKET↗
Redistribution of Magnetic Helicity at the Sun
Evolution of magnetic loops associated with coronal mass ejections involves a redistribution of solar magnetic helicity. The conservation of magnetic helicity then implies that ejection of helicity into the solar wind has to be accompanied by encapture of an equal amount of helicity of opposite sign at the Sun. A simple model is constructed which icludes this effect and other MHD effects on the evolution of magnetic helicity.
helicity↗
Sun-Earth Libration Point Trajectory Analysis
Due to the constant observation environment and low energy access of Sun-Earth libration point orbits, they have become extremely popular for many NASA science missions. The nonlinearity and instability of the orbits have made mission analysis more difficult as traditional approximations are no longer applicable. But the sensitivity of the orbits also provides greater flexibility in orbit design. Some typical mission trajectories are examined.
Sun-Earth Libration↗
Project SUN (Students Understanding Nature)
Project SUN is part of NASA's 'Mission to Planet Earth' education outreach effort. It is based on development of low cost, scientifi- cally accurate instrumentation and computer interfacing, coupled with Apple II computers as dedicated data loggers. The project is com- prised of: instruments, interfacing, software, curriculum, a detailed operating manual, and a system of training at the school sites.
students understanding nature SUN education outrea↗
Connecting the Sun and the Solar Wind: I. Source Regions of the Fast Wind Observed Beyond 0.3 AU
Radio occultation and white-light measurements have shown that the solar corona comprises three distinction morphological regions in path-integrated density: streamer, quiet Sun, and polar coronal hole.
Sun Solar Wind Solar Corona↗
Solar polar explorer: a mission to explore the polar regions of the Sun
It has long been recognized that a Solar Polar mission passing over the poles of the Sun is also needed to complete our understanding of the three dimensioal structure of the corona and the heliosphere.
solar polar explorer solar polar explorer sun↗