High Latitude Communications Satellite
Agrawal, Brij N.
MetadataShow full item record
This paper presents preliminary design of a high latitude communications satellite. The satellite provides a continuous UHF communications for areas located north of the region covered by geosynchronous communications satellites. The satellite orbit is elliptic with 63.40 inclination with perigee at 1204 km altitude in the southern hemisphere and apogee at 14930 km altitude. The orbit period is 4.8 hours. The system consists of three satellites equally spaced in mean anomaly. It is launched by Delta II launch vehicle in three satellite staked configuration. The spacecraft uses three-axis-stabilization consisting of three reaction wheel system. Solar array surface is always normal to sun rays by spacecraft rotation about yaw axis and solar array drive rotation. The propulsion subsystem is a catalytic monopropellant hydrazine subsystem consisting of four 38-Newton and twelve 2-Newton thrusters. Electric power is provided by GaAs solar cell and nickel hydrogen batteries.
Publication: AIAA/USU Conference on Small SatellitesTechnical Session II: Commercial/Civil Applications
Showing items related by title, author, creator and subject.
Feuerstein, M.; Agrawal, B.N. (1994);The AA4871 Spacecraft Design course is the capstone class for the M.S. in Astronautics at the Naval Postgraduate School. Thc design team integrated a Topaz If nuclear power system with an EOS Synthetic Aperture Radar to ...
Preliminary PANSAT ground station software design and use of an expert system to analyze telemetry Lawrence, Gregory Wade (Monterey, California. Naval Postgraduate School, 1994-03);The Petite Amateur Navy Satellite (PANSAT) is a communications satellite designed to be used by civilian amateur radio operators. A master ground station is being built at the Naval Postgraduate School. This computer system ...
Fuhs, A.E.; Mosier, M.R. (1987-10);A low cost general purpose mini-satellite bus has been designed to support a wide variety of small scientific and commercial payloads. The design provides a number of launch options, including the new NASA extended Get-A ...