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Aeroacoustic Design of a 6-Bladed Propeller

Lieser, J. and Lohmann, D. and Rohardt, C.-H. (1997) Aeroacoustic Design of a 6-Bladed Propeller. Aerospace Science and Technology, Vol. 1, pp. 381-389.

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Abstract

By reducing the diameter of a transonic propeller at constant rotational speed a significant noise reduction can be achieved. The number of blades is increased to retain the thrust. For a given design quality a loss in efficiency due to the increase propeller loading can be expected. This has to be compensated by a good design for minimum induced loss and use of optimised airfoils such as the DLR propeller airfoil family. After comparison of a blade element method, a panel and an Euler method, the blade element method was chosen for the aerodynamic design and the panel method was chosen for the aeroacoustic numbers and different numbers of blades. Tip shape studies based on the inviscid panel method exhibit little effects on noise but do effect efficiency.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=1997,
Title:Aeroacoustic Design of a 6-Bladed Propeller
Authors:
AuthorsInstitution or Email of Authors
Lieser, J.UNSPECIFIED
Lohmann, D.UNSPECIFIED
Rohardt, C.-H.UNSPECIFIED
Date:1997
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:Vol. 1
Page Range:pp. 381-389
Status:Published
Keywords:Aeroacoustic, Propeller noise, Propeller design
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
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 10:06

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