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NATOPS EXAM; 88 QUESTIONS WITH VERIFIED ANSWERS
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NATOPS EXAM; 88 QUESTIONS WITHVERIFIED ANSWERS 2024-2025
What are the names of the engines on the MH-60? - Answer: T-700GE-401C
(Front Drive Turboshaft).
What are the three ways to start an engine? - ANSWER: APU, cross-bleed, and
external
What is the HMU (Hydromechanical Unit)? - ANSWER Controls the fuel
supply to the engines under all operating situations.
What is the EDECU (Enhanced Digital Engine Control Unit). - ANSWER
Trims the HMU to keep Np governing while automatically restricting TgT
(Load Sharing).
What is the ODV (Overspeed Drain Valve) - Answer Provides fuel flow to the
12 fuel injectors.
Purges the fuel manifold to prevent the lines from coking.
Traps gasoline upstream to overcome priming.
Routes fuel back to the HMU if Np overspeed is activated.
What is an Alternator? - ANSWER Includes windings that give AC power to
the ignitor assembly, EDECU, and Ng signaling to the vertical instruments.
Load Sharing - Answer When multiple drive and motor sets are combined to
drive one mechanical load.
, How many chip detectors are present in each engine? - ANSWER 1.
How many PDIs are present in each engine? - ANSWER 2.
Where on the engines is the PDI? - ANSWER The oil filters or gasoline filters
With what fluid is the engine serviced? - ANSWER MIL-PRF 23699.
How much fluid enters the engines? - Answer: 7.3 quarts.
ANSWER Coordinates Ng speed to approximate the power required by the
rotor system based on the collective position.
Power Available Spindles - Answer Position of the PCL manipulates the PAS at
the HMU level for the desired power.
What are the three methods for anti-icing the engines? - ANSWER Air to Swirl
Vanes, Oil to Scroll Vanes, and Inlet Anti-ice
What are the four subsystems of the primary rotor system? - ANSWER The
main rotor blades, bifilar absorption system, hub, and flight controls
What number of anti-flaps does centrifugal force draw outward and hold in
place? - ANSWER 35%
At what number does centrifugal force pull the droop-stops out? - ANSWER
70%
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