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Details

ADA216751

Publication Date	1989
Personal Author	Piotrowski, J. L.; Young, C. J.; Walsh, T. P.; Sandman, J.
Page Count	56
Abstract	The U.S. Army Aviation Engineering Flight Activity conducted a Prelimiary Airworthiness Evaluation of the Woodward Hydromechanical Unit (HMU) installed on T700-GE-700 engines in the UH-60A helicopter from 14 May 1989 to 14 June 1989. The evaluation was conducted at Edwards AFB, California (elevation 2302 feet) and Coyote Flat, California (elevation 9980 feet) on aircraft S/N 88-26015. The evaluation consisted of eleven flights for a total of 15.5 productive flight hours. Performance of the Woodward HMU and the Hamilton Standard HMU, presently used on T700-GE-700 engines, was similar. The poor engine/rotor transient droop characteristics, as noted in previous testing, remain a shortcoming regardless of the HMU installed. Operation of T700-GE-700 engines with Woodard HMUs installed is satisfactory. (KR)
Keywords	Airworthiness Helicopter engines Hydromechanics California Flight testing Rotors UH-60A aircraft
Source Agency	Non Paid ADAS
NTIS Subject Category	51B - Aeronautics 51C - Aircraft 81D - Jet & Gas Turbine Engines
Corporate Authors	Army Aviation Engineering Flight Activity, Edwards AFB, CA.
Document Type	Technical Report
Title Note	Final rept. 14 May-14 Jun 89.
NTIS Issue Number	199009

Preliminary Airworthiness Evaluation of the Woodward Hydromechanical Unit Installed on T700-GE-700 Engines in the UH-60A Helicopter.

Preliminary Airworthiness Evaluation of the Woodward Hydromechanical Unit Installed on T700-GE-700 Engines in the UH-60A Helicopter.
ADA216751

Publication Date	1989
Personal Author	Piotrowski, J. L.; Young, C. J.; Walsh, T. P.; Sandman, J.
Page Count	56
Abstract	The U.S. Army Aviation Engineering Flight Activity conducted a Prelimiary Airworthiness Evaluation of the Woodward Hydromechanical Unit (HMU) installed on T700-GE-700 engines in the UH-60A helicopter from 14 May 1989 to 14 June 1989. The evaluation was conducted at Edwards AFB, California (elevation 2302 feet) and Coyote Flat, California (elevation 9980 feet) on aircraft S/N 88-26015. The evaluation consisted of eleven flights for a total of 15.5 productive flight hours. Performance of the Woodward HMU and the Hamilton Standard HMU, presently used on T700-GE-700 engines, was similar. The poor engine/rotor transient droop characteristics, as noted in previous testing, remain a shortcoming regardless of the HMU installed. Operation of T700-GE-700 engines with Woodard HMUs installed is satisfactory. (KR)
Keywords	Airworthiness Helicopter engines Hydromechanics California Flight testing Rotors UH-60A aircraft
Source Agency	Non Paid ADAS
NTIS Subject Category	51B - Aeronautics 51C - Aircraft 81D - Jet & Gas Turbine Engines
Corporate Authors	Army Aviation Engineering Flight Activity, Edwards AFB, CA.
Document Type	Technical Report
Title Note	Final rept. 14 May-14 Jun 89.
NTIS Issue Number	199009