Term
| The maximum gross takeoff weight is |
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Definition
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Term
| The main rotor diameter is approximately |
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Definition
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Term
| The vertical fin is offset 5.5 to |
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Definition
| assist in countering torque. |
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Term
| The _____ is made with a _____ camber and creates a download to help maintain a level attitude |
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Definition
| Horizontal stabilizer…negative |
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Term
| The cargo hook has a weight capacity of ___ pounds. |
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Definition
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Term
| T/F: All interior lights are controlled by the instrument light rheostat. |
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Definition
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Term
| The 250-C20J engine is limited to _______ horsepower due to torque limitations on the transmission. |
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Definition
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Term
| Name the four subassemblies of the engine. |
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Definition
| Compressor…Accessory gearbox…Turbine…Combustion |
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Term
| T/F: The compressor is divided into four subassemblies. |
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Definition
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Term
| Hot air is supplied to the _______ ________ ________ to prevent engine icing. |
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Definition
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Term
| T/F: Anti-icing, hot air is supplied by the compressor bleed air valve. |
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Definition
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Term
| What is the main purpose of the compressor bleed air system? |
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Definition
| To prevent the compressor blades from stalling |
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Term
| How many stages of axial and centrifugal compression are used in the 250-C20J engine? |
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Definition
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Term
| The type of combustor used in the 250-C20J engine is a __________. |
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Definition
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Term
| Approximately _____ of the air flowing through the engine is used for cooling. |
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Definition
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Term
| What is the purpose of the turbine section in the turboshaft engine? |
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Definition
| To convert heat energy to mechanical energy |
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Term
| Approximately ______ of the available energy in the turbine section is used to drive the compressor section and the gas producer drive train. |
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Definition
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Term
| T/F: There is no mechanical connection between the free power turbine and the gas producer turbine. |
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Definition
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Term
| Thermocouples measure TOT. Where are they located? |
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Definition
| At the exit of the gas producer turbine |
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Term
| T/F: The accessory gearbox is the primary structural member of the engine. |
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Definition
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Term
| The __________ __________ is mounted on the top mounting pad on the accessory gearbox. |
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Definition
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Term
| Name the five accessories driven by the gas producer. |
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Definition
| Starter generator…Gas producer tach generator…Oil pump…Fuel control…Fuel pump |
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Term
| Name the four units driven by the power turbine gear train. |
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Definition
| Power turbine governor…Power turbine tach generator…Torque meter…Power output shaft |
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Term
| What type of engine oil system is used in the 250-C20J engine? |
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Definition
| A pressurized circulating dry sump |
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Term
| How is the exact engine oil level determined? |
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Definition
| Check the dipstick mounted in the filler cap |
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Term
| State the type of engine oil pump used, and identify the gear train which drives it. |
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Definition
| Gear type…driven by the gas producer gear train |
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Term
| T/F: Once the external engine oil filter becomes clogged, oil flow is stopped. |
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Definition
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Term
| An oil cooler fan provides cooling for __________, __________, and __________. |
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Definition
| The engine oil…transmission oil…hydraulic reservoir |
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Term
| A ___________ type of fuel control system is used in the 250-C20J engine which prevents ________, ________, and ________. |
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Definition
| Pneumatic-mechanical…excessive temperature…compressor stall or surge…rich or lean blowout |
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Term
| The twist grip control on the collective stick is linked to the ________. |
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Definition
| Gas producer fuel control throttle |
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Term
| How is the power turbine (Nf) governor controlled? |
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Definition
| By a linear actuator and droop compensating system |
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Term
| T/F: The engine fire detector system senses infrared light in the engine compartment. |
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Definition
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