Evaluation of an OH-58A Helicopter with an Allison 250-C20B Engine
Evaluation of an OH-58A Helicopter with an Allison 250-C20B Engine
- New search for: T. P. Benson
- New search for: R. M. Buckanin
- New search for: C. F. Mittag
- New search for: J. E. Jenks
- New search for: T. P. Benson
- New search for: R. M. Buckanin
- New search for: C. F. Mittag
- New search for: J. E. Jenks
The United States Army Aviation Engineering Flight Activity conducted a limited performance and handling qualities evaluation of a Bell Helicopter Company OH-58A helicopter with an Allison 250-C20B engine installed. The evaluation was conducted at Edwards Air Force Base and Bishop, California, from 17 October through 6 December 1974. Twenty-two flights with 17.6 productive test hours were required for the evaluation. Test results obtained with the Allison 250-C20B engine were compared with those previously obtained with the Allison 250-C20 engine and the standard T63-A-700 engine. Primary performance improvement over the standard T63-A-700 engine was an increase in out-of-ground-effect hover ceiling from 4600 to 11,050 feet standard-day density altitude at a gross weight of 3000 pounds. One deficiency and five shortcomings were noted. Unsatisfactory handling qualities characteristics are inherent to the basic OH-58A helicopter and are not associated with the installation of the 250-C20B engine. The engine/airframe compatibility characteristics (cooling and vibration levels) of the OH-58A helicopter with the 250-C20B engine are similar to the standard OH-58A helicopter with the T63-A-700 engine. Within the scope of the test, the performance of the OH-58A helicopter with an Allison 250-C20B engine installed was improved over the basic OH-58A helicopter. Handling qualities were essentially unchanged.
Document information
Evaluation of an OH-58A Helicopter with an Allison 250-C20B Engine
1975
83 pages
Report
No indication
English
Aircraft , Helicopter engines , Helicopters , Flight testing , Hovering , Ceiling , Handling , Compatibility , Human factors engineering , Pilots , Performance(Engineering) , Turboshaft engines , Vibration , Cooling , Temperature , Climbing , Acceleration , Horizontal orientation , Vertical orientation , Airframes , OH-58A Helicopters , H-58 Helicopters , Allison 250-C20 Engines , T-63-A-700 Engines
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