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Development of an integrated electrical swashplateless primary and individual blade control system
Publikationstyp
Conference Paper
Date Issued
2007
Sprache
English
Author(s)
Volume
3
Start Page
2369
End Page
2382
Citation
Annual Forum Proceedings - AHS International Volume 3, Pages 2369 - 2382 (2007)
Contribution to Conference
Scopus ID
Publisher
American Helicopter Society
ISBN
9781617829307
It has been shown that a helicopter rotor in forward flight can greatly benefit from more complex pitch control schemes than used today. Thus, control system add-ons have been realized which provide those missing degrees of freedom, usually referred to as Individual Blade Control (IBC). If such systems are added to a conventional control system, however, additional means of actuation have to be placed in the rotating frame, which require their own power and signal transfer links. Instead of implementing such additional separate hardware it might be worthwhile to consider an integrated actuation system designed to fulfill both the primary control as well as the IBC requirements. This paper discusses the following three aspects: (a) what are the performance requirements of such an integrated control system which is able to fulfill both functions, (b) what actuation technology is best suited for this application and (c) how can the reliability required for a primary flight control system be realized with a minimum degree of redundancy and thus at an acceptable system weight It will be shown that by using modern customized electro-mechanic actuators and by choosing an appropriate system architecture this type of integrated control system becomes feasible at a very competitive system weight. This paper presents the basic principles, discusses the multi-disciplinary investigations carried out, and describes the approach to demonstrate its feasibility through dedicated bench tests.
DDC Class
621.8: Machine Engineering