Noise Study: XM561 and XM561E1 1 1/4-Ton Cargo Trucks.
Abstract
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1965
- Accession Number
- AD0747780
Entities
People
- James B. Moreland
Organizations
- Human Engineering Laboratory