๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Noise from small air jets and a quiet valve

โœ Scribed by T.W. Lancey

Book ID
103246478
Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
486 KB
Volume
57
Category
Article
ISSN
0022-460X

No coin nor oath required. For personal study only.

๐Ÿ“œ SIMILAR VOLUMES

Assessment of Helicopter Noise Annoyance
Assessment of Helicopter Noise Annoyance: a Comparison Between Noise from Helicopters and from Jet Aircraft
โœ T. Gjestland ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 221 KB

A laboratory study has been conducted to validate the special procedure recommended by Norwegian authorities for assessing helicopter noise annoyance. Noise from helicopters has been subjectively compared with noise from a modern commercial fixed wing jet aircraft. At equal noise levels, \(L E Q\),

PREDICTION OF SUPERSONIC JET NOISE FROM
PREDICTION OF SUPERSONIC JET NOISE FROM A STATISTICAL ACOUSTIC MODEL AND A COMPRESSIBLE TURBULENCE CLOSURE
โœ C. Bailly; S. Candel; P. Lafon ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 782 KB

Acoustic radiation of shock free supersonic jets is modified in comparison with subsonic jet noise because of Mach wave emission. Intense noise is radiated when turbulent structures are convected supersonically relative to the ambient sound speed. Using the framework of Lighthill's equation, Ffowcs