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Stability analysis on S1Ma wind tunnel experiments with suction

Schroeder, W. (1995) Stability analysis on S1Ma wind tunnel experiments with suction. Project Report, DLR-Interner Bericht. 129-95/27, 55 S.

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Abstract

The N-factor method has been used to analyse 10 run points of previous S1Ma wind tunnel experiments with a HLF half wing model according to the incompressible stability theory without surface curvature terms. In the experiments suction up to 0.25 m/s had been applied individually to totally 15 chambers within the first 12.5% of chord on upper as well lower wing surface. According to DLR's practice to correlate the instability behaviour of traveling waves (Tollmien-Schlichting) and standing waves (Cross Flow) DLR was involved in the strategy methods 2: The fixed frequency and fixed propagation direction and 4: The fixed frequency and fixed wavelength. Furthermore the instability in the whole wave propagation sector between local main flow and cross flow direction for all 10 tests has been assessed.

Document Type:Monograph (Project Report, DLR-Interner Bericht)
Additional Information: LIDO-Berichtsjahr=1995,
Title:Stability analysis on S1Ma wind tunnel experiments with suction
Authors:
AuthorsInstitution or Email of Authors
Schroeder, W.UNSPECIFIED
Date:1995
Journal or Publication Title:ELFIN II Technical report No. 168, Dez. 1995 IMT Contract AERO-CT92-41
Number of Pages:55
Status:Published
Keywords:Grenzschicht Stabilitaet, Laminare Grenzschicht, Laminar-Turbulenter Umschlag, N-Faktor Methode, NLF Stabilitaet, Tollmien-Schlichting Stoerung, Cross Flow Stoerung,
Institution:DLR
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):L - Concepts & Integration
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

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