elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Noise Characteristics of Jet Aircraft at High Speed/Low Altitude Flight

Boettcher, J. (1994) Noise Characteristics of Jet Aircraft at High Speed/Low Altitude Flight. Beitrag in der Zeitschrift fuer Flugwissenschaften und Weltraumforsch ung, Heft 18, 1994, S. 303 - 310, pp. 303-310. Springer Verlag.

Full text not available from this repository.

Abstract

Flyover noise measurements are evaluated for four different military jet aircraft types flying at low altitudes. Flight Mach numbers ranged from 0.5 to 0.9. The analysis shows that noise immission is likely caused by jet mixing and broadband shock associated noise. Based on the experimental results existing noise prediction schemes are extended towards higher subsonic flight Mach numbers. The novel prediction schemes describe the observed acoustic signatures quite accurately. This holds for the overall sound pressure level in dependence of the emission angle and for 1/3-octave spectra. The prediction schemes are used to demonstrate and quantify the noise reduction potential achievable by varying flight Mach numbers and flight altitude.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=1994,
Title:Noise Characteristics of Jet Aircraft at High Speed/Low Altitude Flight
Authors:
AuthorsInstitution or Email of Authors
Boettcher, J.UNSPECIFIED
Date:1994
Journal or Publication Title:Beitrag in der Zeitschrift fuer Flugwissenschaften und Weltraumforsch ung, Heft 18, 1994, S. 303 - 310
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 303-310
Publisher:Springer Verlag
Series Name:18
Status:Published
Keywords:Jet Noise, Mixing Noise, Broadband Shock Noise
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L TT - Triebwerkstechnologien
DLR - Research theme (Project):L - Quiet Air Traffic (old)
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:05

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.