2 options
Analytical evaluation of jet noise source location technique utilizing an acoustically hard baffle with aperture / by Thomas D. Norum and Edward P. McDaid.
- Format:
- Book
- Government document
- Author/Creator:
- Norum, Thomas D., author.
- McDaid, Edward P., author.
- Series:
- NASA technical note ; D-7229.
- NASA/TN ; D-7229
- Language:
- English
- Subjects (All):
- Jets--Fluid dynamics--Noise.
- Jets.
- Acoustical materials.
- acoustical insulation.
- Physical Description:
- 1 online resource (22 pages) : illustrations.
- Place of Publication:
- Washington, D.C. : National Aeronautics and Space Administration, June 1973.
- Summary:
- An analytical investigation was conducted on the experimental technique that uses shielding by an acoustically hard baffle to determine the location of noise sources in a jet. The jet exhausts through a circular hole in the baffle and the radiated acoustic power is considered to be generated by a distributed source along the jet axis. It is found that the effect of the baffle on the radiated power can be neglected only when the size of the source is on the order of a wavelength of the emitted sound or larger. Since noise sources in a jet are compact, the experimental technique is insufficient to identify these sources.
- Notes:
- "June 1973."
- "June 1972."
- Includes bibliographical references (page 17).
- Description based on online resource, PDF version; title from title page (NASA, viewed on June 25, 2021).
- Other Format:
- Online version: Norum, Thomas D., https://id.oclc.org/worldcat/entity/E39PCjrwmKPmvJJgvKYDMdWp4C. Analytical evaluation of jet noise source location technique utilizing an acoustically hard baffle with aperture
- OCLC:
- 24280727
The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.