Chapter 9

Question 1

What are the three types of inner loop feedback control systems?

Answer 1

1. Stability Augmentation Systems
2. Control Augmentation Systems
3. Fly-by-wire systems

Yeckout Ch 9, Pg 466

Question 2

What is the general operating principle behind a stability augmentation system?

Answer 2

These systems generally feedback and aircraft motion parameters such as pitch rate to provide a controlled deflection that opposes the motion and increases damping characteristics.

Yeckout Ch 9, Pg 446

Question 3

Why is a washout filter necessary for a stability augmentation system?

Answer 3

The feedback loop provided a command that opposes pilot control inputs as a result the aircraft becomes less responsive for a given stick input the washout filter corrects this.

Yeckout Ch 9, Pg 466

Question 4

What is a general definition for fly-by-wire systems?

Answer 4

A control augmentation system with no mechanical control system.

Yeckout Ch 9, Pg 468

Question 5

What is the primary purpose of a yacht damper?

Answer 5

A yaw damper is primarily used to improve Dutch roll characteristics.

Yeckout Ch 9, Pg 469

Question 6

what flight operations require good dutch roll characteristics?

Answer 6

Air to air refueling, formation flying, approach to landing, air to air, and air to ground tracking.

Yeckout Ch 9, Pg 469

Question 7

A pitch damper is primarily used to improve _____.

Answer 7

Short Period Characteristics

Yeckout Ch 9, Pg 472

Question 8

True or False

A washout filter is not normally used with a pitch damper.

Answer 8

True

Yeckout Ch 9, Pg 472

Question 9

Load factor feedback can help ________.

Answer 9

increase short period damping ratios, and linearize the stick force gradient.

Yeckout Ch 9, Pg 476