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Possibilities of High Altitude Flutter During Wave Flights.

Kuettner, J.P. (1) and Stender, W. (2) and Kießling, F. (1993) Possibilities of High Altitude Flutter During Wave Flights. 23rd OSTIV Congress in Borlaenge/ Sweden, 17 - 24th June 1993..

Full text not available from this repository.

Abstract

Normally, flutter is not a concern for type-certificated sailplanes if they are operated within their approved limits. However, in high altitude flight a transgression of these limits can happen. This paper is intended to inform pilots about the conditions and consequences of flutter. The basic flutter mechanisms with torsion and contro. surface rotation are explained, emphasizing the significance of the various wing axes and the importance of mass balance and the coupling of modes. The flutter investigation, usually based on a ground vibration test, results in damping diagrams showing crititcal speeds and corresponding margins of safety. Various instability regions in an altitude/ speed diagram are discussed, and the mean value between a TAS and EAS limit is proposed as V NE above the approved altitude, if no other information is available. For high-altitude soaring, recommendations are given to pilots for flight preparation and performance.

Item URL in elib:https://elib.dlr.de/39565/
Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=1993, pages=13,
Title:Possibilities of High Altitude Flutter During Wave Flights.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kuettner, J.P. (1)UNSPECIFIEDUNSPECIFIED
Stender, W. (2)UNSPECIFIEDUNSPECIFIED
Kießling, F.UNSPECIFIEDUNSPECIFIED
Date:1993
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Vibrations, flutter glider, wave flight. Schwingungen, Flattern, Segelflugzeuge, Wellenflug.
Event Title:23rd OSTIV Congress in Borlaenge/ Sweden, 17 - 24th June 1993.
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 10:47

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