@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.amerigeoss.org/dataset/7917fb97-ae46-455f-8b10-eef36148a64b> a dcat:Dataset ;
    dct:description """The Propulsion IVHM Technology Experiment (PITEX) has been an on-going research effort conducted over several\r
years. PITEX has developed and applied a model-based diagnostic system for the main propulsion system of the X-34\r
reusable 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
propulsion subsystems.""" ;
    dct:identifier "DASHLINK_387" ;
    dct:issued "2011-06-07"^^xsd:date ;
    dct:modified "2020-01-29"^^xsd:date ;
    dct:publisher <https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> ;
    dct:title "Addressing the Real-World Challenges in the Development of Propulsion IVHM Technology Experiment (PITEX)" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "EDWARD BALABAN" ;
            vcard:hasEmail <mailto:edward.balaban@nasa.gov> ] ;
    dcat:distribution <https://data.amerigeoss.org/dataset/7917fb97-ae46-455f-8b10-eef36148a64b/resource/378f3cbc-27ca-4386-98a6-acaf3b95ab56> ;
    dcat:keyword "amerigeo",
        "amerigeoss",
        "ames",
        "ckan",
        "dashlink",
        "geo",
        "geoss",
        "nasa",
        "national",
        "north-america",
        "united-states" .

<https://data.amerigeoss.org/dataset/7917fb97-ae46-455f-8b10-eef36148a64b/resource/378f3cbc-27ca-4386-98a6-acaf3b95ab56> a dcat:Distribution ;
    dct:description "AIAA_ISTC_2004.pdf" ;
    dct:format "PDF" ;
    dct:issued "2020-11-12T04:25:53.911628"^^xsd:dateTime ;
    dct:modified "2025-11-22T20:07:18.288960"^^xsd:dateTime ;
    dct:title "AIAA_ISTC_2004.pdf" ;
    dcat:accessURL <https://c3.nasa.gov/dashlink/static/media/publication/AIAA_ISTC_2004.pdf> ;
    dcat:mediaType "application/pdf" .

<https://data.amerigeoss.org/organization/727dbdd5-3f98-4ac0-9d28-5e344558139b> a foaf:Agent ;
    foaf:name "US Migrating" .