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Calculation of N-factors for TS and CF disturbances using F100 flight test data

Schroeder, W. (1995) Calculation of N-factors for TS and CF disturbances using F100 flight test data. Project Report, DLR-Interner Bericht. 129-95/26, 141 S.

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Abstract

The N-factor method has been used to analyse the 60 priority 1-4 data points from the F100 flight tests according to the incompressible stability theory without surface curvature terms. 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 DLR was committed to analyse the instability in the whole wave propagation sector between local main flow and cross flow direction for 5 of the 20 priority 1 test data. These parameter studies confirmed the usefulness to correlate these 2 classical instability types in form of an N**(N**) diagram.

Document Type:Monograph (Project Report, DLR-Interner Bericht)
Additional Information: LIDO-Berichtsjahr=1995,
Title:Calculation of N-factors for TS and CF disturbances using F100 flight test data
Authors:
AuthorsInstitution or Email of Authors
Schroeder, W.UNSPECIFIED
Date:1995
Journal or Publication Title:ELFIN Technical Report No. 164, Nov. 1995. Contract Nr. AERO-CT92-41
Number of Pages:141
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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