Block II - Airframe

Question 1

What helps defend the A/C exterior against corrosion?

Answer 1

The use of flat coatings protects the aircraft from corrosion and other forms of deterioration, but also reduces glare. The paint design is for each type A/C is to reduce visual detection by matching reflection of operational surroundings

Question 2

What is the main purpose of dampers?

Answer 2

The main rotor head dampers are installed between the hub and spindles to restrain hunting of the main rotor blades. The hunting motion occurs during main rotor engagement and as the main rotor
blades flap in flight. Each damper is filled with hydraulic fluid. Pressurizing the dampers positions the blades full forward to allow for blade folding.

Question 3

What are the 4 factors that affect helicopter flight?

Answer 3

Lift, Weight, Drag, Thrust

Question 4

Define: Lift

Answer 4

Counter acts the force of weight causing the helo to rise.

Question 5

Define: Weight

Answer 5

The force of gravity pulling helo downward.

Question 6

Define: Drag

Answer 6

Friction of air pushing on the helo.

Question 7

Define: Thrust

Answer 7

Counter acts the force of drag causing helo to go forward.

Question 8

What are the factors that affect helicopter performance?

Answer 8

Weight, weather, wind, and engine performance.

Question 9

What are the six sections of the fuselage?

Answer 9

Cockpit, cabin, the transition section, the tail cone, the tail rotor pylon and the main rotor pylon.

Question 10

What equipment comprises the Transition Section?

Answer 10

The transition section includes the Fuel system pumps and valves and the Mission avionics components.

Question 11

What equipment comprises the Tail Cone Section?

Answer 11

The tail cone section includes the Tail drive shafts and disconnect coupling, Tail flight control cable, Aft C-band/Ku-band datalink antenna, Lower ALQ-144 infrared countermeasures transmitter (when installed), Aft LINK-16 antenna, ALE-47 Chaff/Flare pods and the Lower Anti-Collision light.

Question 12

What equipment comprises the Tail Rotor Pylon Section?

Answer 12

The tail rotor pylon section includes the Intermediate Gear Box (IGB), Tail Gear Box (TGB), #6 Tail Drive Shaft, Tail rotor blades, Horizontal Stabilator, Tail bumper (F/H), the Upper Anti-Collision light, and two missile warning optical sensors.

Question 13

What equipment comprises the Main Rotor Pylon Section?

Answer 13

The main rotor pylon section includes the Auxiliary Power Unit (APU), #1/#2 engines, Primary flight control servos, Boost and Trim servos, Hydraulic pumps, Electrical generators, Main module assembly, Axial fan and radiator, Tail drive shafts, Environmental Control System (ECS) and Various avionics antennas.

Question 14

What are the three flight controls that affect helicopter flight?

Answer 14

The collective stick, cyclic stick, and the rudder pedals.

Question 15

Collective Stick operations and actions?

Answer 15

There are two collective sticks mounted on the floor on the left side of the pilot’s and copilot’s seat. Pulling the collective stick up or down changes the pitch of all four main rotor blades at the same time. This causes the a/c to climb or dive respectively.

Question 16

Cyclic Stick operations and actions?

Answer 16

Mounted forward of the pilot’s and copilot’s seat, are used to control the pitch (lateral axis) and roll (longitudinal axis) of the a/c. Pushing the stick forward causes the nose of the a/c to nose over and increases a/c speed. Pulling back on the stick causes a nose up attitude and reduces speed. Moving the stick left or right causes the a/c to roll in the respective direction.

Question 17

Rudder Pedal operations and actions?

Answer 17

Used to control the pitch of the tail rotor blades and control a/c heading (vertical/yaw axis).