High-Latitude Communications Satellite (HILACS)
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Authors
Subjects
Advisors
Date of Issue
1991
Date
1991
Publisher
Language
Abstract
The Naval Postgraduate School in the AE 4871 Advanced Spacecraft Design course has designed a
communications satellite (HILACS) that will provide a continuous UHF communications link between
stations located north of the region covered by geosynchronous communications satellites. This area
(above approximately 60 ° N) will be served via a relay net control station (NCS) located with access
to both the HILACS and geosynchronous communications satellites. The communications payload will
operate only for that portion of the orbit necessary to provide specified coverage. The satellite orbit
is elliptic with perigee at 1204 km in the southern hemisphere and apogee at 14,930 km with 63.4 °
inclination. Analysis and design for each of the subsystems was done to the extent possible within the
constraints of an 11-week quarter and the design and analysis tools available. Work was completed in
orbital analysis, the reaction control subsystem (RCS), attitude control subsystem (ACS), electric power
subsystem (EPS), telemetry, tracking, and control (IT&C), thermal control subsystem, and the structures
subsystem. The design team consisted of 12 students. Additional support was provided by the Jet Propulsion Laboratory and the Naval Research Laboratory.
Type
Report
Description
Series/Report No
Department
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
12 p.
Citation
Proceedings of the NASA/USRA Advanced Design Program 6th Summer Conference
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.