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Measurement of Unsteady Airloads on an Oscillating Engine and a Wing-Engine Combination.

Triebstein, H. and Schewe, G. and Zingel H. (1), and Vogel, S. (1) (1994) Measurement of Unsteady Airloads on an Oscillating Engine and a Wing-Engine Combination. Journal of Aircraft, Vol. 31, No. 1, January-February 1994., No. 1, pp. 97-102.

Full text not available from this repository.

Abstract

Experimental investigations of unsteady aerodynamic forces were performed on an oscillating ejector engine model and a wing/engine combination in the subsonic and transonic flow regimes. The experimental results were compared with theoretical results. The aim was to determine how well, in reality, the mathematical aerodynamic models commonly used for flutter calculations correspond to the flow conditions on an engine. The investigations on the isolated ejector engine demonstrated that linear lifting surface theory provides quite accurate unsteady aerodynamic forces. The effects of the Mach number and reduced frequency are described correctly. For the wing/engine combination, the unsteady interference effect of the engine oscillation on the lower side of the wing is strongly influenced by flow separation at the wing/pylon connection. In general, the unsteady aerodynamic forces induced by the engine on the wing are small and are therefore of minor influence on the unsteady airloads of an oscillating wing.

Item URL in elib:https://elib.dlr.de/39644/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=1994,
Title:Measurement of Unsteady Airloads on an Oscillating Engine and a Wing-Engine Combination.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Triebstein, H.UNSPECIFIEDUNSPECIFIED
Schewe, G.UNSPECIFIEDUNSPECIFIED
Zingel H. (1), UNSPECIFIEDUNSPECIFIED
Vogel, S. (1)UNSPECIFIEDUNSPECIFIED
Date:1994
Journal or Publication Title:Journal of Aircraft, Vol. 31, No. 1, January-February 1994.
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:No. 1
Page Range:pp. 97-102
Series Name:Vol. 31
Status:Published
Keywords:Aeroelasticity, wing/engine interference, unsteady airloads, oscillating engine.
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 10:49

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