NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
A Note About HARP's State Trimming MethodThis short note provides some additional insight into how the HARP program works. In some cases, it is possible for HARP to tdm away too many states and obtain an optimistic result. The HARP Version 7.0 manual warns the user that 'Unlike the ALL model, the SAME model can automatically drop failure modes for certain system models. The user is cautioned to insure that no important failure modes are dropped; otherwise, a non-conservative result can be given.' This note provides an example of where this occurs and a pointer to further documentation that gives a means of bounding the error associated with trimming these states.
Document ID
19980201051
Acquisition Source
Langley Research Center
Document Type
Technical Memorandum (TM)
Authors
Butler, Ricky W. (NASA Langley Research Center Hampton, VA United States)
Hayhurst, Kelly J. (NASA Langley Research Center Hampton, VA United States)
Johnson, Sally C. (NASA Langley Research Center Hampton, VA United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1998
Subject Category
Statistics And Probability
Report/Patent Number
NASA/TM-1998-208427
NAS 1.15:208427
L-17684
Report Number: NASA/TM-1998-208427
Report Number: NAS 1.15:208427
Report Number: L-17684
Funding Number(s)
PROJECT: RTOP 522-33-31-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available