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Army Aviation Knowledge Exam with Accurate Solutions, Exams of Advanced Education

American Public University System (APUS)Advanced Education

Army Aviation Knowledge Exam with Accurate Solutions

Typology: Exams

2024/2025

Available from 07/09/2025

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Army Aviation Knowledge Exam with
Accurate Solutions
1. The collective pitch control
2. The cyclic pitch control
3. The ANTItorque pedals - ANS-What are the three major controls in a helicopter?
100% of Maximum. Normal helicopter landings usually require high power settings, with
terminations to a hover requiring the highest power setting. - ANS-What power setting
should be used during terminations to a hover?
45 Knots at 25-40 feet. Also, be sure this is done into the wind - ANS-When training for
rapid deceleration, in most helicopters the entry speed should be approximately how
many knots and at what altitude?
A 2G turn is 60 degrees - ANS-How many degrees is a 2G turn?
A forward center of gravity is not obvious when hovering into a strong headwind. A
forward center of gravity is easily recognized when coming to a hover following a
vertical takeoff, but not as obvious when hovering into a strong headwind, since less
rearward cyclic displacement is required than when hovering with no wind. - ANS-When
is a forward center of gravity not obvious?
A governor - ANS-What engine component is common to all turbine helicopters and
some piston helicopters?
A high reconnaissance is flown at 300 to 500 feet - ANS-What altitude is a high
reconnaissance flown at?
A hover taxi is used when operating below 25 feet above ground level (AGL) - ANS-At
what altitude is a hover taxi used?
An approach angle of 13-15* is considered a steep approach - ANS-What approach
angle is considered a steep approach?
Bernoulli's principle describes the relationship between internal fluid pressure and fluid
velocity. It is a statement of the law of conservation of energy and helps to explain why
an airfoil develops an aerodynamic force - ANS-What does Bernoulli's principle
describe?
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Army Aviation Knowledge Exam with

Accurate Solutions

  1. The collective pitch control
  2. The cyclic pitch control
  3. The ANTItorque pedals - ANS-What are the three major controls in a helicopter? 100% of Maximum. Normal helicopter landings usually require high power settings, with terminations to a hover requiring the highest power setting. - ANS-What power setting should be used during terminations to a hover? 45 Knots at 25-40 feet. Also, be sure this is done into the wind - ANS-When training for rapid deceleration, in most helicopters the entry speed should be approximately how many knots and at what altitude? A 2G turn is 60 degrees - ANS-How many degrees is a 2G turn? A forward center of gravity is not obvious when hovering into a strong headwind. A forward center of gravity is easily recognized when coming to a hover following a vertical takeoff, but not as obvious when hovering into a strong headwind, since less rearward cyclic displacement is required than when hovering with no wind. - ANS-When is a forward center of gravity not obvious? A governor - ANS-What engine component is common to all turbine helicopters and some piston helicopters? A high reconnaissance is flown at 300 to 500 feet - ANS-What altitude is a high reconnaissance flown at? A hover taxi is used when operating below 25 feet above ground level (AGL) - ANS-At what altitude is a hover taxi used? An approach angle of 13-15* is considered a steep approach - ANS-What approach angle is considered a steep approach? Bernoulli's principle describes the relationship between internal fluid pressure and fluid velocity. It is a statement of the law of conservation of energy and helps to explain why an airfoil develops an aerodynamic force - ANS-What does Bernoulli's principle describe?

Cyclic feather changes angle of incidence (AOI) differentially around teh rotor system, this creates a differential lift int he rotor system by changing the angle of attack (AOA) differentially across the rotor system. Aviators use cyclic feathering to control the attitude of the rotor system. - ANS-What does Cyclic Feathering do? During aft cyclic, torque decreases and rotor speed increases - ANS-What happens to torque and rotor RPM during aft cyclic? During forward cyclic, torque increases and rotor speed decreases - ANS-What happens to torque and rotor RPM during forward cyclic? During left turns, torque increases in most helicopters - ANS-During left turns, what happens to Torque in most helicopters? During right turns, torque decreases in most helicopters - ANS-During right turns, what happens to Torque in most helicopters? Each gallon of JP-4 weighs 6.5lbs - ANS-How much does each gallon of JP-4 weigh? Each gallon of reciprocating engine oil weighs 7.5 Pounds - ANS-How much does each gallon of reciprocating engine oil weigh? Engine power must be increased 100% in a 2G turn - ANS-How much must engine power be increased to maintain airspeed in a 2G turn? Load factor is the effective weight. When a helicopter is maneuvering, centrifugal force adds extra weight to the fuselage. This extra weight, when added to the weight of the helicopter, crew, passengers, and cargo, becomes the effective weight of the helicopter, or load factor. - ANS-What is the load factor? Loss of effective ETL occurs at approximately 25 knots. The antitorque pedals should be adjusted below 100 feet AGL to alignthe helicopter with the touchdown point - ANS- During a steep approach, the helicopter should be kept in trim just prior to loss of effective translational lift, which is occurs at what speed? Also, at how many feet should the antitorque pedals be adjusted to align the helicopter with the touchdown point? The AH-64 Apache features four hardpoints mounted on stub-wing pylons, and usually carries a combination of AGM-114 Hellfire missiles and Hydra 70 rocket pods - ANS- What is the Army's primary attack helicopter and what are it's armaments? The air frame passing through the air - ANS-Parasite Drag is caused by what? The anti-torque pedals control what direction the helicopters nose is pointing during a however, and controls trim during regular flight - ANS-What controls the direction the helicopters nose is pointing during a hover, and adjusts trim in forward flight?

The rate of closure should be about the pace of a brisk walk. During an approach to a pinnacle or ridgeline, groundspeed is more difficult to judge because visual references are farther away than during approaches over trees or flat terrain. Pilots must continually perceive teh apparent rate of closure by observing the apparent change in size of the LZ features. Avoid the appearance of an increasing rate of closure to the LZ. the apparent rate of closure should be that of a brisk walk - ANS-During the approach to a pinnacle, describe how the rate of closure should appear The ratio of the "total rotor blade area" to the "total rotor disk area." The area provides a means to measure the potential for a rotor system to provide thrust and lift - ANS-What is the Solidity Ratio? Why is it important? The slope must be shallow enough to hold the helicopter against it with the cyclic during the entire landing. A slope of 5* is considered maximum for normal operation of most helicopters. Pilots should always consult the RFM or POH for the specific limitations of the helicopter being flown - ANS-What is the maximum slope angle that most helicopters can safely land on a slope? The tail rotor in a single main rotor helicopter causes the helicopter to move in the direction of tail rotor thrust (that is, opposite tail rotor down wash), this is called the translating tendency - ANS-What is the lateral movement called in a single main rotor helicopter, it what is it caused by? The UH-72 Lakota is the US Army's primary light utility helicopter - ANS-What is the US Army's primary light utility helicopter? Translational thrust occurs as the tail rotor moves into less turbulent air. This improved efficiency produces more anti-torque thrust, causing the nose of the aircraft to yaw left. This requires the pilot to apply right pedal in response. - ANS-What occurs when the tail rotor becomes more efficient when moving in to forward flight? What are the implications of this? When climbing to a ridge-line, the approach flight path should be parallel to the ridge- line and into the wind. If there is a need to climb to a pinnacle or ridge-line, it should be done on the upwind side, when practicable, to take advantage of any updrafts. The approach flightpath should be parallel to the ridgeline and into the wind as much as possible - ANS-When climbing to a ridge-line, how should the approach flight path be? When entering a climb at a constant airspeed, an increase in collective pitch is required, and is generally the first step, followed by appropriate adjustments to the anti-torque pedals - ANS-What is a required action while entering a climb while maintaining air speed? When operating at maximum gross weight, high altitude, high temperatures, and high humidity conditions, which together all result in a high density altitude, can make it

unsafe to take off. - ANS-What factors can make it unsafe to take off while operating at maximum gross weight? While transitioning to forward flight, at about 16-24 knots the helicopter goes through effective translational lift - ANS-At what speed does effective translational lift occur?