AFCS

Question 0

The AFCS is composed of three major subsystems:

Answer 0

1. Stability augmentation system (SAS)
2. Stabilator system
3. Advanced flight control computer (AFCC)

Question 1

The Automatic flight control system is an ____________________ system that provides inputs to the flight control system to assist the pilot in maneuvering and handling the helicopter.

Answer 1

Electrohydromechanical

Question 2

What does 4/ 2/ 1 mean?

Answer 2

SAS 1 on, SAS 2 on, TRIM on, AUTO PLT on,
SAS BST on, CMPTR PWR/ RESET on,
STAB in auto mode

Question 3

What page is AFCS on?

Answer 3

2-84

Question 4

The central component of the AFCS is the digital _______.

Answer 4

AFCC

Question 5

The AFCC commands:

Answer 5

The SAS actuators and trim actuators in all four channels

Question 6

The AFCC provides:

Answer 6

Self-monitoring, fault isolation, and failure advisory

Question 7

The AFCC employs two types of controls, identified as ______________and ______________.

Answer 7

Inner-loop and outer-loop

Question 8

The inner-loop (SAS) employs __________________ to improve dynamic helicopter stability. This system is fast in response, _____________________, and operates without movement of the flight controls.

Answer 8

Rate damping, limited in authority

Question 9

The outer-loop (autopilot) provides ______________ inputs by trimming the flight controls to the position required to maintain the selected flight regime. It is capable of driving the flight controls through their full range of travel, or ______________ authority, at a limited rate of _______________ per second.

Answer 9

Long term,
100 percent,
10 percent

Question 10

The primary purpose of the stabilator system is to ______________________________________________ caused by the rotor down wash impinging on the horizontal stabilator during transition to a hover and low-speed flight.

Answer 10

Eliminate undesirable nose-up attitudes

Question 11

The stabilator travels from ____ trailing edge down for hover and low speed flight (below 30 KIAS) to ____ trailing edge up for cruise and maneuvering flight.

Answer 11

42 degrees,

10 degrees

Question 12

Four inputs are required to position the stabilator:

Answer 12

1. Collective position
2. Lateral acceleration
3. Airspeed
4. Pitch rate

Question 13

The total travel of the stabilator will be restricted in the event of an actuator failure. Stabilator travel is restricted to _______ if the actuator fails in the full-down position or _______ if the actuator fails in the full-up position.

Answer 13

35 degrees,

30 degrees

Question 14

The automatic approach button can be initiated at any airspeed and altitude less than _________ feet AGL.

Answer 14

5000

Question 15

The automatic departure mode is available anytime __________ is engaged, airspeed is below _______, and _________ hold is operable.

Answer 15

Autopilot,
50 KIAS,
RADALT

Question 16

Upon engagement of automatic depart, the aircraft begins to accelerate to ___________ and simultaneously begins to climb to _____________.

Answer 16

120 KIAS,

150 Feet AGL

Question 17

The automatic preflight check is initiated, using the SAS 1 push button, when these five conditions are present:

Answer 17

1. Weight on wheels
2. Rotor brake ON
3. Engine torques below 10 percent
4. Both EGI attitudes valid
5. SAS 1 push button engaged (after AFCC on for at least 20 seconds).

Question 18

The ________ positions the cyclic, collective! and tail rotor pedals prior to the blade fold sequence. The ________ commands the trim actuators to drive the flight controls to a predetermined position.

Answer 18

AFCS,

AFCC