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Rotorcraft Health Management Issues and ChallengesThis paper presents an overview of health management issues and challenges that are specific to rotorcraft. Rotorcraft form a unique subset of air vehicles in that their propulsion system is used not only for propulsion, but also serves as the primary source of lift and maneuvering of the vehicle. No other air vehicle relies on the propulsion system to provide these functions through a transmission system with single critical load paths without duplication or redundancy. As such, health management of the power train is a critical and unique part of any rotorcraft health management system. This paper focuses specifically on the issues and challenges related to the dynamic mechanical components in the main power train. This includes the transmission and main rotor mechanisms. This paper will review standard practices used for rotorcraft health management, lessons learned from fielded trials, and future challenges.
Document ID
Document Type
Technical Memorandum (TM)
Zakrajsek, James J. (NASA Glenn Research Center Cleveland, OH, United States)
Dempsey, Paula J. (NASA Glenn Research Center Cleveland, OH, United States)
Huff, Edward M. (NASA Ames Research Center Moffett Field, CA, United States)
Augustin, Michael (Textron Bell Helicopter Fort Worth, TX, United States)
Safa-Bakhsh, Robab (Boeing Phantom Works Philadelphia, PA, United States)
Ephraim, Piet (Smiths Aerospace Grand Rapids, MI, United States)
Grabil, Paul (Intelligent Automation Corp. Poway, CA, United States)
Decker, Harry J. (Army Research Lab. Cleveland, OH, United States)
Date Acquired
September 7, 2013
Publication Date
February 1, 2006
Subject Category
Aircraft Propulsion and Power
Report/Patent Number
Meeting Information
First International Forum on Integrated System Health Engineering and Management in Aerospace(Napa, CA)
Funding Number(s)
WBS: WBS 22-714-90-01
Distribution Limits
Work of the US Gov. Public Use Permitted.

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NameType 20060008910.pdf STI