An isolation system has been developed for hingeless rotor helicopters which has been demonstrated to be extremely effective in preventing rotor induced vibration from reaching the airframe. Named IRIS (Improved Rotor Isolation System) the system has been in development for 3 years and was first flown and is currently being demonstrated on a BO-105 helicopter. A similar system has been installed in a Company-owned UTTAS helicopter and is presently being developed through flight testing.This paper describes some of the analytical and bench testing background of both IRIS installations and presents latest available flight data.
Anti-resonant isolation for hingeless rotor helicopters
Sae Technical Papers
Aerospace Engineering and Manufacturing Meeting ; 1976
1976-11-30
Conference paper
English
Air Resonance of Hingeless Rotor Helicopters in Trimmed Forward Flight
Online Contents | 1994
|Closed-Loop Aeromechanical Stability of Hingeless Rotor Helicopters with Higher Harmonic Control
Online Contents | 2006
|