Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 780
Book Description
NASA Technical Note
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 780
Book Description
Measurements of the Scattering of Sound from Turbulence
Author: William BaergPublisher:
ISBN:
Category :
Languages : en
Pages : 276
Book Description
A Theory of the Sound from Jets and Other Flows in Terms of Simple Sources
Author: Herbert S. RibnerPublisher:
ISBN:
Category : Jet plane sounds
Languages : en
Pages : 122
Book Description
Experimental Investigations on the Scattering of Sound by Turbulence
Author: Dieter W. SchmidtPublisher:
ISBN:
Category : Scattering (Physics)
Languages : en
Pages : 74
Book Description
Experimental investigations of the scattering of sound by turbulence were performed in a wind tunnel. Turbulence was produced by grids of parallel circular rods (with diameters of 0.1 to 1.0 cm and grid meshlengths of 0.5 to 2. 5 cm); the sound frequencies covered a range of 100 to 500 kc. Disturbances of the measurements due to reflections of sound waves at the tunnel walls were avoided by the application of short sound pulses. The dependence of the damping of the sound waves on the sound frequency, the Mach number of the turbulence, the length of the sound path in the turbulent flow and a predominant direction of the turbulent eddies was measured. Theoretical predictions were confirmed and partly extended. In the range of the parameters which is of interest for practical use the most important results are the proportionality of the damping to the square of the sound frequency and to the square of the turbulent Mach number. Based on the measurements and the theoretical considerations, a formula is derived which is applicable to the damping of sound by turbulent scattering in the atmosphere. (Author).
Hydrodynamic Noise, Cavity Flow
Author: Ralph D. CooperPublisher:
ISBN:
Category : Cavitation
Languages : en
Pages : 602
Book Description
Applied Mechanics Reviews
Author: Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 804
Book Description
A Summary of Results on Sonic-boom Pressure-signature Variations Associated with Atmospheric Conditions
Author: I. E. GarrickPublisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 34
Book Description
U.S. Government Research Reports
Author: Publisher:
ISBN:
Category : Science
Languages : en
Pages : 220
Book Description
Propagation of Sound in Air
Author: John W. WescottPublisher:
ISBN:
Category : Air
Languages : en
Pages : 650
Book Description
This bibliography contains several thousand abstracts from the unclassified literature on the propagation of sound in air. The subject is treated in depth for the years 1929 to 1963. Some abstracts on earlier works of lasting interest and many abstracts from English translations of foreign journals are included. The abstracts are grouped according to subject matter. Subject and author indexes are furnished. Accessions Document (AD and earlier ATI) numbers used by both the Defense Documentation Center (formerly ASTIA) and the Office of Technical Services (OTS) are furnished wherever possible. (Author).
Fundamental Study of Jet Noise Generation and Suppression
Author: W. C. SperryPublisher:
ISBN:
Category : Noise
Languages : en
Pages : 150
Book Description
