SIFT Army Aviation Information Trivium
Exam-Graded A
What part of a rotary-wing aircraft makes directional control possible? - ANS-The
swashplate: allows for directions movement of the aircraft
Which US Army helicopters is classified as a tandem rotor? - ANS-CH-47 Chinook
What is the preferred method of ground movement for helicopters on airports? - ANS-
Air taxi
Which war became known as the "Helicopter War" because helicopters, in their first
large-scale use in combat operations, quickly became a decisive force-multiplier for the
United Sates' forces? - ANS-Vietnam War
What type of helicopter design uses a ducted fan in place of a tail rotor to cancel the
torque effect? - ANS-The NOTAR
Which aerodynamic force(s) must a rotary-wing aircraft balance in order to hover? -
ANS-Weight, lift, thrust, and drag
How would a high-density altitude affect performance of a helicopter? - ANS-
Performance would be decreased due to the low value of the air density.
If the airspeed indicator needle is in the yellow and approaching the red line during a
maneuver, what would be the correct response? - ANS-Decrease airspeed
Which pitot-static instrument makes use of both pitot and static pressure? - ANS-
Airspeed indicator
What effect does the cyclic control have on the rotor system? - ANS-It alters the pitch of
the main rotor blades individually and cyclically.
The angle of attack (AOA) is the angle between the? - ANS-Airfoil chord line and
resultant relative wind.
What item was developed to reduce compass reading errors? - ANS-A vertical card
compass
What effect is principally used to counteract main rotor torque with the NOTAR system
used on the MD-520 and MD-900 helicopters? - ANS-Coanda effect
, Which type of drag is caused by the production of lift. - ANS-Induce drag
Risk management is composed of which four risk elements? - ANS-Pilot, aircraft,
environment, and external pressures
What is the unit of measure for airspeed? - ANS-Knots
What is the degree increment between the hash marks on the attitude indicator? - ANS-
30 degrees
Which is true of helicopter performance in ground effect (IGE)? - ANS-The rotor system
becomes more efficient since the ground interferes with the circulation pattern, and less
power is required to hover.
Which term is used to describe the weight of an aircraft, including all hydraulic and oil
systems, full, trapped and unusable fuel, and all fixed equipment. - ANS-Basic weight or
basic empty weight
What aerodynamic condition can occur when a helicopter is descending at greater than
300 FPM, has 20 to 100 percent power applied, and an airspeed less the effective
translational lift? - ANS-Settling with power
What one of the acronyms for all-up weight is defined as the total aircraft weight at any
give moment during flight? - ANS-AGW (Aircraft gross weight) or AUW (All-up weight)
How would a pilot recognize the onset of transverse flow effect? - ANS-During takeoff, a
vibration and a right rolling motion occurs as the aircraft accelerated through 10 to 20
knots.
If magnetic north is a positive 15-degree variation (west) from true north, to convert true
north to magnetic north when flying eastbound,what is the adjustment a pilot must make
to the magnetic compass? - ANS-Add 15 degrees
As the air becomes less dense, it causes the following change in force: - ANS-A
reduction in power at the engine intakes
When an aircraft is approaching to land the leading and trailing edges or its flaps are
extended to create the following force(s). - ANS-Maximum lift and high drag
If there is no increase in thrust, which action would result in an ultimate stall? - ANS-
Increasing pitch
What causes a rotary-wing aircraft to drift laterally due to tail rotor thrust? - ANS-
Translating tendency
Exam-Graded A
What part of a rotary-wing aircraft makes directional control possible? - ANS-The
swashplate: allows for directions movement of the aircraft
Which US Army helicopters is classified as a tandem rotor? - ANS-CH-47 Chinook
What is the preferred method of ground movement for helicopters on airports? - ANS-
Air taxi
Which war became known as the "Helicopter War" because helicopters, in their first
large-scale use in combat operations, quickly became a decisive force-multiplier for the
United Sates' forces? - ANS-Vietnam War
What type of helicopter design uses a ducted fan in place of a tail rotor to cancel the
torque effect? - ANS-The NOTAR
Which aerodynamic force(s) must a rotary-wing aircraft balance in order to hover? -
ANS-Weight, lift, thrust, and drag
How would a high-density altitude affect performance of a helicopter? - ANS-
Performance would be decreased due to the low value of the air density.
If the airspeed indicator needle is in the yellow and approaching the red line during a
maneuver, what would be the correct response? - ANS-Decrease airspeed
Which pitot-static instrument makes use of both pitot and static pressure? - ANS-
Airspeed indicator
What effect does the cyclic control have on the rotor system? - ANS-It alters the pitch of
the main rotor blades individually and cyclically.
The angle of attack (AOA) is the angle between the? - ANS-Airfoil chord line and
resultant relative wind.
What item was developed to reduce compass reading errors? - ANS-A vertical card
compass
What effect is principally used to counteract main rotor torque with the NOTAR system
used on the MD-520 and MD-900 helicopters? - ANS-Coanda effect
, Which type of drag is caused by the production of lift. - ANS-Induce drag
Risk management is composed of which four risk elements? - ANS-Pilot, aircraft,
environment, and external pressures
What is the unit of measure for airspeed? - ANS-Knots
What is the degree increment between the hash marks on the attitude indicator? - ANS-
30 degrees
Which is true of helicopter performance in ground effect (IGE)? - ANS-The rotor system
becomes more efficient since the ground interferes with the circulation pattern, and less
power is required to hover.
Which term is used to describe the weight of an aircraft, including all hydraulic and oil
systems, full, trapped and unusable fuel, and all fixed equipment. - ANS-Basic weight or
basic empty weight
What aerodynamic condition can occur when a helicopter is descending at greater than
300 FPM, has 20 to 100 percent power applied, and an airspeed less the effective
translational lift? - ANS-Settling with power
What one of the acronyms for all-up weight is defined as the total aircraft weight at any
give moment during flight? - ANS-AGW (Aircraft gross weight) or AUW (All-up weight)
How would a pilot recognize the onset of transverse flow effect? - ANS-During takeoff, a
vibration and a right rolling motion occurs as the aircraft accelerated through 10 to 20
knots.
If magnetic north is a positive 15-degree variation (west) from true north, to convert true
north to magnetic north when flying eastbound,what is the adjustment a pilot must make
to the magnetic compass? - ANS-Add 15 degrees
As the air becomes less dense, it causes the following change in force: - ANS-A
reduction in power at the engine intakes
When an aircraft is approaching to land the leading and trailing edges or its flaps are
extended to create the following force(s). - ANS-Maximum lift and high drag
If there is no increase in thrust, which action would result in an ultimate stall? - ANS-
Increasing pitch
What causes a rotary-wing aircraft to drift laterally due to tail rotor thrust? - ANS-
Translating tendency
