NOISE STUDY: XM561 AND XM561E1 1 1/4-TON CARGO TRUCKS

The noise of the XM561 and XM561E1 1-1/4-ton cargo trucks was evaluated with the vehicles moving and stationary. The normal operational noise levels in the cabs of both vehicles exceeded the levels recommended in the HEL Standard S-1-63B because of excessive transmission noise. In the XM561E1, there were also other noises at excessive levels, but their sources could not be isolated. Unless engine noise is reduced, personnel will not be able to use 'direct-voice' or 'intercom-type' communications in these vehicles. (Author)

  • Corporate Authors:

    Human Engineering Laboratories

    Aberdeen Proving Ground
    Aberdeen, MD  USA  21005
  • Publication Date: 1965-10

Media Info

  • Pagination: 42 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00261214
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: HEL-TN-4-65
  • Files: TRIS
  • Created Date: Oct 22 1974 12:00AM