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Home » About TSi » News » Press Release |
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Active Pitch Link Phase II Award 9 June 2004 The Army Research Laboratory (ARL) has awarded TSi a Phase II STTR contract after a successful Phase I STTR research program performed by TSi in close collaboration with the Alfred Gessow Rotorcraft Center of the University of Maryland at College Park, the Lord Corporation, and the Sikorsky Aircraft Corporation. This development effort, partly sponsored by the Maryland Industrial Partnerships (MIPS) Program, focuses on a new electro-magnetic actuator for active control of helicopter main rotors for enhanced performance at reduced maintenance costs. The Active Pitch Link (APL) system exploits the superior performance characteristics of a new magnetostrictive material, GalFeNOL, and nano-particle enhanced magneto-rheological (MR) fluid technology developed at the University of Maryland. This hybrid device efficiently marries two high-energy density electromechanical materials, GalFeNOL magnetostrictive material and magnetorheological fluids, to provide full-scale rotor control. The APL can be retrofitted to existing rotor systems and powered through an existing slip ring that powers rotor blade de-icing equipment. TSi Project Leader, Dr. Peter Chen, expects that the control authority and bandwidth capability of the APL technology will provide the full range of rotor control, encompassing primary flight control, Higher Harmonic Control (HHC) for vibration reduction and noise mitigation, and other maneuvering flight and gust loads reduction. |
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