Turn Indicator - Ch 17

Question 1

Turn Indicator

Answer 1

Rate Gyro
Horizontally tied
1 gimbal = 1 degree of freedom
Freedom in pitch and roll - positive response to yaw

Question 2

Moves

Answer 2

Up and away from you

Rate at which gyro topples is related to the amount of yaw force applied and its rigidity

Question 3

Secondary Precession

Answer 3

Assists yaw input which caused original precession - caused by spring tension to balance precession

Gives equilibrium to turn

Question 4

Deflection Angle

Answer 4

Of output axis is proportional to the rate of rotation of input axis

Question 5

Powered either

Answer 5

By air or by electric

Question 6

The springs are

Answer 6

Calibrated to design TAS

Max error 5% between 85-350kts

Only accurate at one speed but acceptably accurate over the range

Question 7

RoT

Answer 7

Slower = Small Radius

Faster = Larger radius

Question 8

Working out RoT

Answer 8

Circumference = Pie D

Question 9

Turn Coordinator

Answer 9

Gimbal titled at 30 degrees

Immediately and directly sensitive to roll

No pitch info

Little AC used to display

Question 10

Behaviour of a turn indicator and a turn coordinator

Answer 10

Indicator = not sensitive or roll

Coordinator = sensitive to roll - less accurate in an inverted spin and may not indicate correctly

Question 11

Balanced Indicator

Answer 11

Always want to be balanced unless deliberately: OEI, Crosswind etc

Question 12

Correcting Imbalance

Answer 12

Step on ball to correct

Slip - nose out

Skid - Nose in