NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Automated Power Assessment for Helicopter Turboshaft EnginesAn accurate indication of available power is required for helicopter mission planning purposes. Available power is currently estimated on U.S. Army Blackhawk helicopters by performing a Maximum Power Check (MPC), a manual procedure performed by maintenance pilots on a periodic basis. The MPC establishes Engine Torque Factor (ETF), an indication of available power. It is desirable to replace the current manual MPC procedure with an automated approach that will enable continuous real-time assessment of available power utilizing normal mission data. This report presents an automated power assessment approach which processes data currently collected within helicopter Health and Usage Monitoring System (HUMS) units. The overall approach consists of: 1) a steady-state data filter which identifies and extracts steady-state operating points within HUMS data sets; 2) engine performance curve trend monitoring and updating; and 3) automated ETF calculation. The algorithm is coded in MATLAB (The MathWorks, Inc.) and currently runs on a PC. Results from the application of this technique to HUMS mission data collected from UH-60L aircraft equipped with T700-GE-701C engines are presented and compared to manually calculated ETF values. Potential future enhancements are discussed.
Document ID
20080032562
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Simon, Donald L. (NASA Glenn Research Center Cleveland, OH, United States)
Litt, Jonathan S. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 24, 2013
Publication Date
July 1, 2008
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NASA/TM-2008-215270
E-16541
Meeting Information
Meeting: 64th Annual Forum and Technology Display (AHS Forum 64)
Location: Montreal
Country: Canada
Start Date: April 29, 2008
End Date: May 1, 2008
Sponsors: American Helicopter Society, Inc.
Funding Number(s)
WBS: WBS 645846.02.07.03.03.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available