Space Station Freedom power: a reliability, availability, and maintainability assessment of the proposed Space Station Freedom electric power system

Author

Turnquist, S.R. ; Twombly, M. ; Hoffman, D.

Author_Institution

ARINC Res. Corp., Annapolis, MD, USA

fYear

1989

fDate

6-11 Aug 1989

Firstpage

271

Abstract

A preliminary reliability, availability, and maintainability (RAM) analysis of the proposed Space Station Freedom electric power system (EPS) was performed using the unit reliability, availability, and maintainability (UNIRAM) analysis methodology. Orbital replacement units (ORUs) having the most significant impact on EPS availability measures were identified. Also, the sensitivity of the EPS to variations in ORU RAM data was evaluated for each ORU. Estimates were made of average EPS power output levels and availability of power to the core area of the Space Station. The results of assessments of the availability of EPS power and power to load distribution points in the Space Stations are given. Some highlights of continuing studies being performed to understand EPS availability considerations are presented

Keywords

maintenance engineering; power systems; reliability; space vehicle power plants; RAM; Space Station Freedom; UNIRAM; availability; electric power system; load distribution; maintainability; reliability; sensitivity; space power; Availability; Extraterrestrial measurements; Maintenance; NASA; Performance analysis; Power generation; Power measurement; Power system modeling; Power system reliability; Space stations;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Engineering Conference, 1989. IECEC-89., Proceedings of the 24th Intersociety

Conference_Location

Washington, DC

Type

conf

DOI

10.1109/IECEC.1989.74474

Filename

74474