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A Sensitivity Analysis Comparing Two Procedures for Adjusting As-Measured Spectra to Reference Conditions : SAE ARP 866A vs. ISO 9613-1/ANSI S1.26-1995.

File Language:
English


Details

  • Creators:
    Reherman, Clay N ; Roof, Christopher J. ORCID ICON IMG ; Fleming, Gregg G.
  • Corporate Creators:
    John A. Volpe National Transportation Systems Center (U.S.)
  • Subject/TRT Terms:
  • Resource Type:
    Research Paper
  • Geographical Coverage:
    United States
  • Corporate Publisher:
    John A. Volpe National Transportation Systems Center (U.S.)
  • Abstract:
    Two procedures for adjusting as-measured test-day spectra to reference day conditions – ; the Society of Automotive Engineers’ (SAE) Aerospace Recommended Practice (ARP) ; No. 866A (866A) and a procedure utilizing pure-tone absorption equations, developed in ; support of the International Organization for Standardization’s (ISO) 9613-1 and the ; American National Standards Institute’s (ANSI) S1.26-1995, and refined for application ; to one-third octave-band data – were evaluated and compared. The ISO and ANSI puretone ; absorption equations are identical to each other. The 866A procedure historically ; has been used for atmospheric absorption corrections for Federal Aviation Regulations ; (FAR) Part 36, Noise Standards: Aircraft Type and Airworthiness Certification and ; similar regulations of the International Civil Aviation Organization (ICAO). The ; ISO/ANSI procedure analyzed herein is under consideration for inclusion into ; harmonized regulations. This document presents a comparison of data corrected to ; several distances using the two different methodologies.
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/9515/dot_9515_DS1.pdf
  • File Type:
    Filetype[PDF - 3.13 MB]
  • Collection(s):
    Volpe Center
  • Main Document Checksum:
    urn:sha-512:17e3eb65dac643f27ee1e30b67b934494bbe91e1d6ab432f2ff5b07ce5e11d34b7715e207aed69d6db4e1301291b24bb41f94e94fc7b71d100190caadddb8688
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