NASA Lewis Research Center, 21000 Brookpark Road, Cleveland, Ohio 44135

70 -- POST TEST DIAGNOSTIC SYSTEM (PTDS) FLIGHT CONVERSION AND UPDATE SOL SFQ3-059171 DUE 092596 POC Mary E. Solderitsch, Contracting Officer, who may be contacted at (216) 433-8837, or Internet E-Mail: Mary.E.Solderitsch@lerc.nasa.gov. The framework, systems module, valves and ducts module, combustion devices module, and all the turbomachinery modules have been developed and demonstrated. The current PTDS works on the data collected at Stennis Space Center from a Space Shuttle Main Engine (SSME) test firing. Based on the results from the PTDS, the next step is to augment the modules in order to handle flight data. The main emphasis of this task is in that area, but also additional tasks are included to improve anomaly diagnosis and ease of system use. Period of Performance: 6 months. Task I: Flight Data Conversion. The contractor shall: 1) Interview experts at MSFC in the areas of turbomachinery, combustion devices, valves, ducts, and overall engine system to understand differences between the analysis of a flight vs. a ground firing of the SSME. Contractor shall understand and document analysis which cannot be performed on a flight engine, and analysis that needs to change due to limitations of flight instrumentation or changes in engine operation due to flight. 2.) Design, implement and test and resolve discrepancies between experts and PTDS results. Task II: Consolidation of SV. The contractor shall: Review all sensor validation being performed in the turbomachinery, valves and ducts, and combustion devices modules. In conjunction with LeRC engineers, consolidate all sensor validation routines into the global SV module. Task III: Engine Configuration and Analysis. The contractor shall: 1) Interview turbomachinery experts and implement analysis changes, green run specification tests and database changes due to P&W pumps. 2) Interview experts and implement analysis and database changes required to analyze the large throat engine. 3) Interview experts to understand methodology used to incorporate past performance of components into PTDS. Implement methodology into PTDS. 4) Review method currently implemented for shift detection used by the pump modules. Implement new design to reduce the number of false alarms and missed detections. Task IV: Validation and Verification. The contractor shall thoroughly test the PTDS modules to validate and verify operation. For each modified or new anomaly the PTDS is to detect, a minimum or 5 test/flight firings shall be used in validation. The PTDS shall be also tested using a minimum of 10 nominal flight and 10 nominal ground test firings. Contractor shall document and resolve discrepancies between the expert and PTDS results. Task V: Reporting and Deliverables. Status reports and a final report describing the additions to PTDS shall be provided to NASA LeRC. Informal status reports describing task accomplishments and addressing any issues shall be submitted at the completion of each task via electronic mail (addressed to june@england.lerc.nasa.gov). The final report shall cover all aspects of the development effort including 1) copies of all transcripts, 2) PTDS design changes, 3) testing results, and 4) users documentation. The contractor shall also deliver all software, both executable and commented source, constructed during this task. Software to be delivered via internet and on a 1/4'' cartridge tape. Delivery to Cleveland, Ohio 44135. Delivery schedule is completed 180 calendar days after contract award. Established period of performance is 6 months. This notice is for information only. NASA-Lewis intends to contract with: Intellegent Software Associates, Inc. This is a combined synopsis/solicitation. Quotes are being requested and a written solicitation will not be issued. The Standard Industrial Classification (SIC) Code is 8999. The Small Business Size Standard is $3.5 M. The following provisions apply to this acquisition: Representations and Certifications dated 2/96. A copy of this document is available via the NASA Internet Acquisition Service (NAIS). The documents will reside on a World Wide Web server, which may be accessed using client browsers, such as MOSAIC or Netscape. The WWW address, or Uniform Resource Locator (URL) of the NASA Lewis Research Center Procurement Home Page is http://www.lerc.nasa.gov/WWW/Procure/home.htm. Quotes may be submitted via: Mail: NASA-Lewis Research Center, Attn: Mary E. Solderitsch, MS 500-309, 21000 Brookpark Road, Cleveland, Ohio 44135, or FAX: (216) 433-2480. See Number Note: 26 (0254)

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