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SIFT Section 3: Army Aviation
Information Exam Questions and
Answers
what allows a helicopter to fly forward,backward, and laterally? - ✔✔-helicopters are
equipped with a source of thrust
-an engine produces power and delivers it to overhead and tail rotor via one or more
transmissions and drive shafts
two types of helicopter engines - ✔✔-piston
-turbine (offers more thrust per pound)
define fuselage - ✔✔the main body of a helicopter or plane
define cowling - ✔✔shaped metal skin that covers the engine and transmission on a
helicopter.
Katelyn Whitman© 2025, All Rights Reserved.
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functions for:
-drag reduction
-engine cooling by directing airflow
how many rotor blades do helicopters typically have - ✔✔depends on the type of
aircraft, but usually between two and six attached to the mast via a rotor head
stabilizer bar - ✔✔also called a flybar.
weighted, rotating bar mounted across the main rotor used to help stabilize the aircraft
enhance flight stability by keeping the bar stable as the rotor spins, and reduces
crosswind thrust on the blades
components of a rotor system - ✔✔-upper and lower swashplates
-blade grips
-control rods
-pitch and scissor links
-teeter and coning hinges
Katelyn Whitman© 2025, All Rights Reserved.
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-pitch horns
-counterweights
tail boom - ✔✔near end of fuselage
contains drive shaft for the tail rotor
ducted fan - ✔✔tail rotor tips covered in formed metal to reduce the possibility of
somebody walking into the tail rotor and getting killed
USCG Eurocpter HH-65 Dolphin is an example of a ducted fan helicopter
flight instruments and controls - ✔✔-cyclic
-collective
-throttle
-pedals
avionics - ✔✔electronics used for navigation, communications, and aircraft systems
Four aerodynamic forces - ✔✔-weight
-lift
-thrust
Katelyn Whitman© 2025, All Rights Reserved.
SIFT Section 3: Army Aviation
Information Exam Questions and
Answers
what allows a helicopter to fly forward,backward, and laterally? - ✔✔-helicopters are
equipped with a source of thrust
-an engine produces power and delivers it to overhead and tail rotor via one or more
transmissions and drive shafts
two types of helicopter engines - ✔✔-piston
-turbine (offers more thrust per pound)
define fuselage - ✔✔the main body of a helicopter or plane
define cowling - ✔✔shaped metal skin that covers the engine and transmission on a
helicopter.
Katelyn Whitman© 2025, All Rights Reserved.
,2|Page
functions for:
-drag reduction
-engine cooling by directing airflow
how many rotor blades do helicopters typically have - ✔✔depends on the type of
aircraft, but usually between two and six attached to the mast via a rotor head
stabilizer bar - ✔✔also called a flybar.
weighted, rotating bar mounted across the main rotor used to help stabilize the aircraft
enhance flight stability by keeping the bar stable as the rotor spins, and reduces
crosswind thrust on the blades
components of a rotor system - ✔✔-upper and lower swashplates
-blade grips
-control rods
-pitch and scissor links
-teeter and coning hinges
Katelyn Whitman© 2025, All Rights Reserved.
, 3|Page
-pitch horns
-counterweights
tail boom - ✔✔near end of fuselage
contains drive shaft for the tail rotor
ducted fan - ✔✔tail rotor tips covered in formed metal to reduce the possibility of
somebody walking into the tail rotor and getting killed
USCG Eurocpter HH-65 Dolphin is an example of a ducted fan helicopter
flight instruments and controls - ✔✔-cyclic
-collective
-throttle
-pedals
avionics - ✔✔electronics used for navigation, communications, and aircraft systems
Four aerodynamic forces - ✔✔-weight
-lift
-thrust
Katelyn Whitman© 2025, All Rights Reserved.
