Forum: Reliability & Maintainability Questions and Answers

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Posted by: Lemort Alexandre (lemort_alex@yahoo.fr )
Organization:CENA (Centre d'Etudes de la Navigation Aérienne) (France)
Date posted: Mon Jul 30 10:48:03 US/Eastern 2001
Subject: SWEEP program
Message:
Do you know where i can found a software call SWEEP (Software Error Estimation Program) ?
Thanks

Replies:
SWEEP
William H. Crowell Tue Jul 31 13:43:25 US/Eastern 2001

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Posted by: Lim (limth@cet.st.com.sg )
Organization:CET Tech
Date posted: Sun Jul 29 22:17:45 US/Eastern 2001
Subject: Use of COTS equipment in Military environment
Message:
Hi,
I have a question regarding the use of commercially-of-the-shelf (COTS) equipment in a military vehicle and environment. For e.g. we use a COTS equipment (say a modem)and shock mount it on the racks of the military vehicle. The vehicle is air-conditioned and the COTS is non-operating during movement to the deployment site. Once at the site, the equipment is powered on and operated. If the MTBF of the COTS modem is 13,000hrs (based on GB environment as given by the supplier), can i still use this figure in my MTBF prediction or do i need to degrade it by a certain factor. If there is a need to degrade it by a certain figure, is there any reference that provide this factor? Would appreciate it if anybody could provide some advice. Rgds.

Replies:
Use of COTS equipment in Military environment
Gary Sunada Wed Aug 1 11:36:45 US/Eastern 2001

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Posted by: John Schweighardt (john.schweighardt@baesystems.com )
Organization:BAE SYSTEMS-CNI
Date posted: Thu Jul 26 15:54:46 US/Eastern 2001
Subject: Flight Hours vs Operating Hours
Message:
Is there a stated relationship commonly in use between actual aircraft flight hours and operating hours (which includes ground time). I've used anywhere from a 1.0 to 1.5 relationship based on the type of aircraft.

Replies:
Relation between F/H and operating hours
Larry George Sat Jul 28 17:19:38 US/Eastern 2001

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Posted by: Chris Guebert (Christopher.guebert@l-3com.com )
Organization:L-3 Communications
Date posted: Wed Jul 25 15:14:49 US/Eastern 2001
Subject: MTBR
Message:
I can't find anything that tell me how to calculate MTBR. Any help would be appreciated. Is there a formula?

Replies:
Reliability Definitions MTBR
B.W.Dudley Thu Jul 26 10:27:48 US/Eastern 2001

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Posted by: Lemort Alexandre (lemort_alex@yahoo.fr )
Organization:CENA (Centre d'Etudes de la Navigation Aérienne) (France)
Date posted: Wed Jul 25 7:17:08 US/Eastern 2001
Subject: Software reliability
Message:
I'm looking for any information concerning software reliability (prediction, growth models, trends (Laplace,etc..)), error seeding, mutation analysis.
If anyone is aware of current or on-going work in this area (public or private), I would appreciate it if you could pass along a source and/or point of contact. Thank you!

Replies: (list all replies)
Software Reliability
Chris Guebert Wed Jul 25 17:07:57 US/Eastern 2001
Software Reliability
B.W.Dudley Thu Jul 26 8:49:40 US/Eastern 2001

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