{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "EDWARD BALABAN", "hasEmail": "mailto:edward.balaban@nasa.gov"}, "description": "The Propulsion IVHM Technology Experiment (PITEX) has been an on-going research effort conducted over several\r\nyears. PITEX has developed and applied a model-based diagnostic system for the main propulsion system of the X-34\r\nreusable launch vehicle, a space-launch technology demonstrator. The application was simulation-based using detailed models of the propulsion subsystem to generate nominal and failure scenarios during captive carry, which is the most safety-critical portion of the X-34 flight. Since no system-level testing of the X-34 Main Propulsion System (MPS) was performed, these simulated data were used to verify and validate the software system. Advanced diagnostic and signal processing algorithms were developed and tested in real-time on flight-like hardware. In an attempt to expose potential performance problems, these PITEX algorithms were subject to numerous real-world effects in the simulated data including noise, sensor resolution, command/valve talkback information, and nominal build variations. The current research has demonstrated the potential benefits of model-based diagnostics, defined the performance metrics required to evaluate the diagnostic system, and studied the impact of real-world challenges encountered when monitoring\r\npropulsion subsystems.", "distribution": [{"@type": "dcat:Distribution", "description": "AIAA_ISTC_2004.pdf", "downloadURL": "https://c3.nasa.gov/dashlink/static/media/publication/AIAA_ISTC_2004.pdf", "format": "PDF", "mediaType": "application/pdf", "title": "AIAA_ISTC_2004.pdf"}], "identifier": "DASHLINK_387", "issued": "2011-06-07", "keyword": ["ames", "dashlink", "nasa"], "landingPage": "https://c3.nasa.gov/dashlink/resources/387/", "modified": "2025-03-31", "programCode": ["026:029"], "publisher": {"@type": "org:Organization", "name": "Dashlink"}, "title": "Addressing the Real-World Challenges in the Development of Propulsion IVHM Technology Experiment (PITEX)"}