FLOW NOISE OF STREAMLINED BODIES FALLING FREELY IN WATER,
Abstract
Sound pressure fluctuations were measured by single hydrophones imbedded in streamlined, plastic, laminar flow bodies about 10 inches long and with trailing cables while the bodies dropped through water at Lake Pend Oreille, Idaho. The pressure levels approximated those of the ambient noise measured with the bodies submerged at rest, unless the body boundary layers were intentionally tripped into turbulence by tripping wires. Relative broadband pressure values and relative pressure spectra were derived and are explained along with applicable flow noise theory. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 19, 1963
- Accession Number
- AD0427410
Entities
People
- P. O. Laitinen
Organizations
- Navy Electronics Laboratory