Version $Revision: 1.3 $
Last Update $Date: 2001/11/08 14:46:10 $
HRC CCB Status NA

AXAF Constraints, Restrictions, & Limitations

Number: HRC-C-009

Type: Constraint

Original Date: 1998 October 13


Subsystem: HRC

Subject: Spacecraft Power Bus Configuration for the HRC

Source: Gerry Austin


CRL Statement:

Only one of the two spacecraft buses for the HRC may be on.


CRL Rationale/Justification:

The power configuration constraint is derived from the HRC thermal design.


CRL Impact:

Application of power to both the primary and redundant sides of the HRC electronics at the same time may result in over-heating due to power dissipations in excess of the design values. Such over-heating may damage of degrade the electronics.


Recommended Action:

Incorporate into the Systems and Operations Procedures, with ASC providing the inputs.


$Log: hrc-c-009.html,v $

Revision 1.3 2001/11/08 14:46:10 juda

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Revision 1.2 1999/01/26 18:33:52 juda

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Revision 1.1 1998/10/14 13:47:58 juda

Initial revision


Dr. Michael Juda
Harvard-Smithsonian Center for Astrophysics
60 Garden Street, Mail Stop 70
Cambridge, MA 02138, USA
Ph.: (617) 495-7062
Fax: (617) 495-7356
E-mail: mjuda@cfa.harvard.edu