{
  "id": 15646556,
  "title": "Software",
  "url": "https://urgent.news/2026/10/19/software-15646556",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-10-19T18:11:40.000Z",
  "source": {
    "name": "NASA Science",
    "slug": "nasa-science",
    "url": "https://www.nasa.gov/centers-and-facilities/glenn/acoustics-software/"
  },
  "original_language": "en",
  "account": "NASA's Glenn Research Center is home to software research teams dedicated to creating predictive tools for aircraft engine noise. These software programs help engineers design and analyze improved propulsion systems by predicting the noise generated by aircraft engines. To obtain copies of these codes, researchers can request them from NASA's Software Catalog.\n\nThe development of jet noise prediction codes is complex, with NASA's efforts focusing on accurate aerodynamic predictions, turbulence modeling, and advanced measurement systems. The Lilley's Acoustic Analogy and Reynolds-Averaged Navier-Stokes (RANS) code form the foundation for many of these predictions.\n\nOne such code, JeNo, calculates the far-field sound spectral density of axisymmetric jets at a specified observer location and frequency range. It has been validated for subsonic and low supersonic, unheated axisymmetric jets. Another code, MGBK, was used to predict trends in jet noise for complex aircraft engine exhaust nozzles and analyze the noise reduction benefits of chevrons on turbofan nozzles.\n\nV072 and TFaNS are also part of NASA's jet noise prediction arsenal. V072 predicts rotor/stator interaction tone noise based on simplistic fan flow and geometry models, making it useful for early design stages. TFaNS builds upon V072 by accounting for blade row acoustic coupling effects and transmitting/reflected tones to the far field.\n\nLinfrax offers a more comprehensive approach by modeling realistic 3-D flows and blade geometries, albeit at a higher computational cost. BFANS, on the other hand, focuses on calculating broadband noise generated by turbulence impinging on rotor blades and stator vanes. RSI predicts the spectrum of broadband noise resulting from the interaction between fan rotor wake turbulence and fan exit guide vanes. Lastly, WOBBLE is used to estimate tone noise associated with propellers experiencing unsteady blade loading due to varying inflow angles.",
  "summary": "Research teams at NASA’s Glenn Research Center are involved in developing theory and software to predict the noise from aircraft engines. This software helps engineers to design and analyze new and improved aircraft propulsion systems. Copies of our software can be requested from NASA’s Software Catalog. JeNo Development of jet noise prediction codes is multifaceted. […] The post Software…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "NASA",
        "title": "Software",
        "url": "https://urgent.news/2026/10/19/software",
        "published": "2026-10-19T18:11:40.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}