An analytical study was conducted examining the feasibility of a swashplateless rotor controlled through two trailing edge flaps (TEF), where the cyclic and collective controls were provided by separate TEFs. This analysis included a parametric study examining the impact of various design parameters on TEF deflections. Blade pitch bearing stiffness; blade pitch index; and flap chord, span, location, and control function of the inboard and outboard flaps were systematically varied on a utility-class rotorcraft trimmed in steady level flight. Gradient-based optimizations minimizing flap deflections were performed to identify single- and two-TEF swashplateless rotor designs. Steady, forward and turning flight analyses suggest that a two-TEF swashplateless rotor where the outboard flap provides cyclic control and inboard flap provides collective control can reduce TEF deflection requirements without a significant impact on power, compared to a single-TEF swashplateless rotor design.
Analysis of a Multi-Flap Control System for a Swashplateless Rotor
AHS International 67th Annual Forum and Technology Display ; 2011 ; Virginia Beach, Va, United States
2011-05-03
Conference paper
No indication
English
Analysis of a Multi-Flap Rotor System for Swashplateless Rotor Control
British Library Conference Proceedings | 2011
|Green Swashplateless Helicopter Rotor
British Library Conference Proceedings | 2009
|Analysis of a Multiflap Control System for a Swashplateless Rotor
Online Contents | 2012
|