Stability of sonic boom metrics regarding signature distortions from atmospheric turbulence

The degree of insensitivity to atmospheric turbulence was evaluated for five metrics (A-, B-, E-weighted sound exposure level, Stevens Mark VII Perceived Level, and NASA’s Indoor Sonic Boom Annoyance Predictor) that correlate to human annoyance from sonic booms. Eight N-wave shaped sonic booms from NASA’s Farfield Investigation of No-boom Threshold (FaINT) experiment and five simulated “low-boom” sonic booms were turbulized by Locey’s ten atmospheric filter functions. The B-weighted sound exposure level value changed the least due to the turbulence filters for twelve of thirteen booms. This makes it the most turbulence stable metric which may be useful for quiet supersonic aircraft certification.

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01677522
  • Record Type: Publication
  • Files: NTL, TRIS
  • Created Date: Jun 13 2018 9:28AM