| Pilot Control Of The Engine Is Limited To The Selection Of "off", "ground Idle" And "flight", Leaving The Engine To Automatically Respond To Rotor Demands. |
| The compressor driving the main transmission is mechanically independent from the power turbine. |
| The turbine driving the main rotor transmission is mechanically independent from the gas generator. |
| The Gas Generator Is Free To Run At A Constant Speed While The Power Turbine Changes Speed In Response To Changes In Drag On The Main Rotor Blades. |
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