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25 Cards in this Set
- Front
- Back
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105.1 State the type, model and characteristics of the engine used in the SH-60F/HH-60H.
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The SH-60F/HH-60H uses two front-driven T700-GE-401C turboshaft engines. The T700-GE-401C engine incorporates an integral inlet particle separator and modular construction.
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105.2 Define the acronym - DEC
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Digital Electronic Control Unit (or DECU)
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105.2 Define the acronym - ESU
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Electrical Sequence Unit (for APU)
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105.2 Define the acronym - HMU
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Hydromechanical Unit
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105.2 Define the acronym - LCF
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Low-Cycle Fatigue
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105.2 Define the acronym - LDS
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Load Demand Spindle
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105.2 Define the acronym - Ng
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Gas Generator Turbine Speed (taken from the alternator)
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105.2 Define the acronym - Np
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Power turbine speed
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105.2 Define the acronym - Nr
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Main rotor speed
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105.2 Define the acronym - P3
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Compressor discharge pressure
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105.2 Define the acronym - PAS
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Power Available Spindle
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105.2 Define the acronym - T2
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Compressor inlet temperature
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105.2 Define the acronym - TGT
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Turbine Gas Temperature
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105.3 State the three different pneumatic sources for engine start.
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a. APU - Normal Start
b. Engine - Cross bleed start c. External air source - Emergency start |
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105.4 State the purpose of the Inlet Particle Separator (IPS).
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a. The purpose of the Inlet Particle Separator (IPS) is to separate dust, sand, and other foreign objects from engine inlet airflow.
b. Provides clean air to the engine. |
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105.5 State the purpose of the Hover Infrared Suppression System (HIRSS)
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To reduce exhaust gas radiation and prevent line of sight viewing of hot engine exhaust. The three stage core and inner baffle are coated with low-reflective material.
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105.6 State the five main components of the SH-60F/HH-60H power train.
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a. Main Module
b. Right Input Modules c. Left Input Modules d. Right Accessory Modules e. Left Accessory Modules |
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105.7 State the primary and secondary function of the main transmission system.
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a. The primary function of the main transmission system is to take combined power from both engines, reduce RPM and transfer it to the main and tail rotors.
b. The secondary function of the main transmission system is to provide a drive for electrical and hydraulic power. |
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105.8 State the purpose of the chip detectors used on the SH-60F/HH-60H.
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The purpose of the chip detectors used on the SH-60F/HH-60H is to attract loose metal particles in engine/transmission oil system. There are a total of 9 chip detectors. When metal chips make contact across magnets in the chip detector, the associated caution light will illuminate on the caution/advisory panel in the cockpit.
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105.9 State the purpose of the Auxiliary Power Unit (APU).
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The purpose of the Auxiliary Power Unit (APU) is to provide air for engine starts and environmental control system (ECS). The APU also provides limited electrical power and backup hydraulic pump power.
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105.10 State the purpose of the APU accumulator and the two methods of charging.
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a. The purpose of the APU accumulator is to provide the hydraulic pressure required by the APU hydraulic starter.
b. The two methods of charging the APU accumulator are: (1) by the back-up hydraulic pump (electrical) (2) manually, with a hand pump. |
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105.11 State the purpose of the history recorder/counter.
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The purpose of the history recorder/counter is to provide a means of determining maintenance events on the engine.
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105.12 State the types of fuel the T700 engine uses and their restrictions.
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a. JP-4 (F40) - Low flash point. Cannot be used aboard ship. Operating qualities may change.
b. JP-5 (F44) - Primary fuel. c. JP-8 (F34) - Cannot be used aboard ship. |
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105.13 State two conditions that would require an engine compressor cleaning.
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a. Engine performance has deteriorated to unacceptable level or
b. Borescope reveals an accumulation of dirt, salt or oil deposits. |
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105.14 State the goal of the Vibration Analysis Program.
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The goal of the Vibration Analysis Program is to:
a. avoid catastrophic failures, b. reduce aircraft repair cost, c. reduce man-hours removing components, d. determine cause of chronic failures, e. reduce expense, and f. prevent unnecessary periodic maintenance. |
