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"System For Anomaly And Failure Detection (SAFD) System Development" and the language of the book is English.


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  • Title: ➤  System For Anomaly And Failure Detection (SAFD) System Development
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  • Language: English

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  • Internet Archive ID: nasa_techdoc_19940019701

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"System For Anomaly And Failure Detection (SAFD) System Development" Description:

The Internet Archive:

The System for Anomaly and Failure Detection (SAFD) algorithm was developed as an improvement over the current redline system used in the Space Shuttle Main Engine Controller (SSMEC). Simulation tests and execution against previous hot fire tests demonstrated that the SAFD algorithm can detect engine failures as much as tens of seconds before the redline system recognized the failure. Although the current algorithm only operates during steady state conditions (engine not throttling), work is underway to expand the algorithm to work during transient conditions. This task assignment originally specified developing a platform for executing the algorithm during hot fire tests at Technology Test Bed (TTB) and installing the SAFD algorithm on that platform. Two units were built and installed in the Hardware Simulation Lab and at the TTB in December 1991. Since that time, the task primarily entailed improvement and maintenance of the systems, additional testing to prove the feasibility of the algorithm, and support of hot fire testing. This document addresses the work done since the last report of June 1992. The work on the System for Anomaly and Failure Detection during this period included improving the platform and the algorithm, testing the algorithm against previous test data and in the Hardware Simulation Lab, installing other algorithms on the system, providing support for operations at the Technology Test Bed, and providing routine maintenance.

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"System For Anomaly And Failure Detection (SAFD) System Development" is available for download from The Internet Archive in "texts" format, the size of the file-s is: 32.81 Mbs, and the file-s went public at Sun May 22 2011.

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  • Internet Archive Link: Archive.org page
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  • Added Date: 2011-05-22 00:32:24
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