NIFE ENGINES EXAM PREP |
QUESTIONS WITH CORRECT
ANSWERS
torquemeter, power output - Answer- the purpose of the _________________ is to
connect the RGB to the gas generator and to transmit and measure the
_______________ _________ from the gas generator to the RGB
gas generator, RGB - Answer- the torquemeter assembly is located between the
__________________ ______________ and the RGB
torque shaft - Answer- the ______________ _____________ , or inner shaft, carries the
load from the propeller and produces the measured twist
reference shaft - Answer- the ________________ ______________, or outer shaft,
provides reference to the torque shaft and is not twisted as the torque shaft is
compressor, Free Turbine, Power Turbine - Answer- the propeller can be connected to
the gas generator in 2 ways: attached to the front of the _________________ or
attached to a _______________/_____________
90, 10 - Answer- for a turboprop engine, _________% of the thrust comes from the
prop, _________% comes from the gas generator
full power, fuel control unit, blade angle - Answer- when a propeller is in alpha range,
the PCL is positioned from flight idle to _______ _____________. the PCL sends fuel
flow signals to ____________ __________ __________, propeller governor controls
the ____________ _________.
Max reverse, fcu, pitch change assembly - Answer- when a propeller is in beta range
(ground range), the PCL is positioned from flight idle to _____________ ____________.
PCL is mechanically to ___________ and ___________ _____________
_______________
thrust, altitude, short, lowest - Answer- advantages of turboprop: high ___________ at
low airspeeds, good takeoff/low __________, heavy loads off _____________ runways
, lowest _______________
heavier and more complicated, limited speeds - Answer- disadvantages of turboprop
,turboshaft, free turbine, ships, trains, tanks - Answer- ________________ engine has
many similarities to the turboprop engine. it uses a ____________ ______________ to
drive the rotor of a helicopter. when equipped with a reduction gear assembly they are
also used to power _________________, ________________, and even
______________________
gas generator, Free/Power Turbine, Free/Power Turbine, PT - Answer- the turboshaft
engine consists of the _______________ _______________ and the
____________________________ ________________. the
____________________________ _____________ is mechanically independent from
the gas generator. the exhaust gases that come from the gas generator turbine drive
______
negligible, shaft horsepower - Answer- the propulsive energy from the exhaust gases is
________________ in a turboshaft engine with virtually all of the pressure energy being
converted to _________________ _______________
propeller, crankshaft - Answer- the propulsive energy in a reciprocating engine comes
from the __________________ driven by the rotation of the ___________________
directly, reduction gear box - Answer- the propeller can be attached _________ to the
crankshaft (low power engines) or through a _______________ ____________
________
governor - Answer- a _______________ is utilized to control the blade angle and
propeller speed
compressor bleed air, main shaft - Answer- gas turbine accessory systems are powered
by either
environmental systems, cabin pressurization, engine anti-icing - Answer- bleed air
accessories include
Accessory Gear Box (AGB), compressor - Answer- mechanically driven accessories are
attached to the ___________________ ________________ _______________. it is
mounted anywhere around the ___________________ section provided it will be gear
driven off the main shaft of the engine
tachometer, hydraulic pumps, alternator/generator - Answer- mechanically driven
accessories include
self-accelerating speed, 30, ignition - Answer- normal starting sequence: starter
engages until engine attains ________________________ __________________. fuel
flow occurs after engine RPM reaches _______%. __________________ occurs when
sufficient airflow supports combustion of the fuel/air mixture
, hot, hung, false, wet - Answer- four types of abnormal starts
temperature - Answer- hot start is defined as the turbine _______________ exceeding
the maximum allowed for the turbine section during the start sequence
temperature, compressor RPM - Answer- Hung start is described where the
_________________ within the turbine section continues to rise and the
__________________ _____________ stabilizes below normal
compressor RPM, temperature - Answer- False start occurs when the ______________
______________ stabilizes below normal and the turbine _______________ remains
within limits
light off, dangerous - Answer- wet start is a situation in which the fuel-air mixture does
not _____________ _____________ initially, but can at any time. most
______________________ type of abnormal start
DC electric motor starter, Air Turbine starter - Answer- two types of engine starters
smaller, compressor, battery - Answer- DC Electric motor starter is the most commonly
used start on ________________ engines. mechanically connected to the
___________________. _____________used to supply voltage to the starter motor
larger, compressor - Answer- air turbine starter is the most commonly used starter on
______________ gas turbine engines. air is delivered to the air turbine which
accelerates the _____________________
high heat-intensity capacitor, high heat, temperatures, high, fouling - Answer- today's
military aircraft use a __________ ___________________ ________________ ignition
system. this ___________ ___________ discharge ensures ignition of the low volatile
fuel at all _______________ and _________________ altitudes. it also prevents the
igniters from ____________
annular-gap, constrained-gap - Answer- two types of spark igniters
annular-gap - Answer- _______________ igniters protrude into the chamber to provide
an effective spark. most common
constrained-gap - Answer- _________________ igniters extend the spark beyond the
face of the chamber liner. operates at cooler temp than annular gap
flight controls, landing gear, wing or rotor fold systems, bomb bay doors - Answer-
hydraulic systems provide extra power and mechanical advantage in various aircraft
components:
QUESTIONS WITH CORRECT
ANSWERS
torquemeter, power output - Answer- the purpose of the _________________ is to
connect the RGB to the gas generator and to transmit and measure the
_______________ _________ from the gas generator to the RGB
gas generator, RGB - Answer- the torquemeter assembly is located between the
__________________ ______________ and the RGB
torque shaft - Answer- the ______________ _____________ , or inner shaft, carries the
load from the propeller and produces the measured twist
reference shaft - Answer- the ________________ ______________, or outer shaft,
provides reference to the torque shaft and is not twisted as the torque shaft is
compressor, Free Turbine, Power Turbine - Answer- the propeller can be connected to
the gas generator in 2 ways: attached to the front of the _________________ or
attached to a _______________/_____________
90, 10 - Answer- for a turboprop engine, _________% of the thrust comes from the
prop, _________% comes from the gas generator
full power, fuel control unit, blade angle - Answer- when a propeller is in alpha range,
the PCL is positioned from flight idle to _______ _____________. the PCL sends fuel
flow signals to ____________ __________ __________, propeller governor controls
the ____________ _________.
Max reverse, fcu, pitch change assembly - Answer- when a propeller is in beta range
(ground range), the PCL is positioned from flight idle to _____________ ____________.
PCL is mechanically to ___________ and ___________ _____________
_______________
thrust, altitude, short, lowest - Answer- advantages of turboprop: high ___________ at
low airspeeds, good takeoff/low __________, heavy loads off _____________ runways
, lowest _______________
heavier and more complicated, limited speeds - Answer- disadvantages of turboprop
,turboshaft, free turbine, ships, trains, tanks - Answer- ________________ engine has
many similarities to the turboprop engine. it uses a ____________ ______________ to
drive the rotor of a helicopter. when equipped with a reduction gear assembly they are
also used to power _________________, ________________, and even
______________________
gas generator, Free/Power Turbine, Free/Power Turbine, PT - Answer- the turboshaft
engine consists of the _______________ _______________ and the
____________________________ ________________. the
____________________________ _____________ is mechanically independent from
the gas generator. the exhaust gases that come from the gas generator turbine drive
______
negligible, shaft horsepower - Answer- the propulsive energy from the exhaust gases is
________________ in a turboshaft engine with virtually all of the pressure energy being
converted to _________________ _______________
propeller, crankshaft - Answer- the propulsive energy in a reciprocating engine comes
from the __________________ driven by the rotation of the ___________________
directly, reduction gear box - Answer- the propeller can be attached _________ to the
crankshaft (low power engines) or through a _______________ ____________
________
governor - Answer- a _______________ is utilized to control the blade angle and
propeller speed
compressor bleed air, main shaft - Answer- gas turbine accessory systems are powered
by either
environmental systems, cabin pressurization, engine anti-icing - Answer- bleed air
accessories include
Accessory Gear Box (AGB), compressor - Answer- mechanically driven accessories are
attached to the ___________________ ________________ _______________. it is
mounted anywhere around the ___________________ section provided it will be gear
driven off the main shaft of the engine
tachometer, hydraulic pumps, alternator/generator - Answer- mechanically driven
accessories include
self-accelerating speed, 30, ignition - Answer- normal starting sequence: starter
engages until engine attains ________________________ __________________. fuel
flow occurs after engine RPM reaches _______%. __________________ occurs when
sufficient airflow supports combustion of the fuel/air mixture
, hot, hung, false, wet - Answer- four types of abnormal starts
temperature - Answer- hot start is defined as the turbine _______________ exceeding
the maximum allowed for the turbine section during the start sequence
temperature, compressor RPM - Answer- Hung start is described where the
_________________ within the turbine section continues to rise and the
__________________ _____________ stabilizes below normal
compressor RPM, temperature - Answer- False start occurs when the ______________
______________ stabilizes below normal and the turbine _______________ remains
within limits
light off, dangerous - Answer- wet start is a situation in which the fuel-air mixture does
not _____________ _____________ initially, but can at any time. most
______________________ type of abnormal start
DC electric motor starter, Air Turbine starter - Answer- two types of engine starters
smaller, compressor, battery - Answer- DC Electric motor starter is the most commonly
used start on ________________ engines. mechanically connected to the
___________________. _____________used to supply voltage to the starter motor
larger, compressor - Answer- air turbine starter is the most commonly used starter on
______________ gas turbine engines. air is delivered to the air turbine which
accelerates the _____________________
high heat-intensity capacitor, high heat, temperatures, high, fouling - Answer- today's
military aircraft use a __________ ___________________ ________________ ignition
system. this ___________ ___________ discharge ensures ignition of the low volatile
fuel at all _______________ and _________________ altitudes. it also prevents the
igniters from ____________
annular-gap, constrained-gap - Answer- two types of spark igniters
annular-gap - Answer- _______________ igniters protrude into the chamber to provide
an effective spark. most common
constrained-gap - Answer- _________________ igniters extend the spark beyond the
face of the chamber liner. operates at cooler temp than annular gap
flight controls, landing gear, wing or rotor fold systems, bomb bay doors - Answer-
hydraulic systems provide extra power and mechanical advantage in various aircraft
components:
