A Comparison of Two Whole-Body Vibration Standards as Applied to Rotary- Wing Aircraft: ISO (International Standards Organization) 2631 vs ADS (aeronautical Design Standards) 27
Abstract
Two whole-body vibration (WBV) standards, International Standards Organization (ISO) 2631 and Aeronautical Design Standard 27 (ADS-27), were compared using vibration signatures from the UH-1 and UH-60 helicopters ISO 2631 is a widely used WBV standard which accounts for variables such as intensity, duration of exposure, frequency range, and vibration in all three orthogonal directions. ADS-27 is a newer standard developed at the U.S. Army Aviation Systems Command (AVSCOM) for measuring WBV producted by rotary-winged aircraft. An analysis of the two vibration signature types shows when vibration levels are measured on a pass/fail performance criteria, the ADS-27 becomes the more stringent standard; however, ADS-27 fails to answer the important health hazard questions that ISO 2631 attempts. ISO 2631 vibration acquisition techniques were found to be more scientifically sound than those proposed by the ADS-27. The use of both standards may prove to be a more complete method of helicopter WBV assessment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1988
- Accession Number
- ADA200430
Entities
People
- Barclay P. Butler
- Dennis L. Breen
Organizations
- United States Army Aeromedical Research Lab