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Active Rotor Control for Helicopters: Motivation and Survey on Higher Harmonic Control

Keßler, Christoph (2010) Active Rotor Control for Helicopters: Motivation and Survey on Higher Harmonic Control. 36th European Rotorcraft Forum, 2010-09-07 - 2010-09-09, Paris, Frankreich.

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Kurzfassung

Since the early helicopter developments, these aircraft have made a tremendous progress in performance, handling quali-ties, comfort and efficiency. However, modern helicopters still suffer from many problems that hinder a further increase in their efficiency, acceptance and hence their market share. The high level of vibrations and the noise generated by the rotor are the most important reasons for this. While vibrations are a concern of pilot and passenger comfort, they also give rise to an increase in maintenance efforts and costs. The high noise level limits the acceptance of helicopters in the public, e.g. landing of helicopters on or close to hospitals during EMS missions. High noise levels also lead to an early aural detection during military missions. Further drawbacks of helicopters are the high fuel consumption in high speed forward flight due to the excessive power required, the limited speed of flight, the low range for the same reason, low lead-lag damping etc. To alleviate these drawbacks of helicopters, active rotor control technologies have been investi-gated for a long time. Many different approaches have been investigated and most of them are not being followed any more. First investigations started with so-called Higher Harmonic Control (HHC) which has been replaced by Individual Blade Control (IBC). The paper gives a survey of the typical problems and explains the vibration and noise issues in more detail. Since active means have to compete with passive ones, such methods are also briefly addressed. Next, the paper gives a review on important HHC achievements. Due to space constraints, the paper mainly focuses on wind tun-nel and flight test results. A second paper reviews IBC and gives an outlook on the idea of the swashplateless helicopter.

elib-URL des Eintrags:https://elib.dlr.de/64670/
Dokumentart:Konferenzbeitrag (Paper)
Titel:Active Rotor Control for Helicopters: Motivation and Survey on Higher Harmonic Control
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Keßler, Christophchristoph.kessler (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:7 September 2010
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Active Rotor Control, Higher Harmonic Control, Individual Blade Control
Veranstaltungstitel:36th European Rotorcraft Forum
Veranstaltungsort:Paris, Frankreich
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:7 September 2010
Veranstaltungsende:9 September 2010
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Drehflügler (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L RR - Drehflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Der aktive Drehflügler (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Flugsystemtechnik > Hubschrauber
Hinterlegt von: Keßler, Christoph
Hinterlegt am:02 Nov 2010 16:41
Letzte Änderung:24 Apr 2024 19:29

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