Basic Gyros - Ch 13

Question 1

4 Instruments that use Basic Gyros

Answer 1

Directional Indicator
Attitude Indicator
Remote Reading Compass
Turn and Slip / Turn Coordinator

Question 2

2 Properties

Answer 2

Rigidity: solid in space

Precession: Torque will be transmitted at 90 degrees

Question 3

To improve efficiency

Answer 3

Increase Mass: Weight around the edge
Increase Rotational Speed: Up to 24000rpm
Increase rotor size: the gyration

Question 4

Friction Impact

Answer 4

Will class Gyro to slow down and thus wander

Question 5

Wander Planes

Answer 5

Vertical Plane: Topple

Horizontal Plane: Drift

Question 6

Number of Gimbals

Answer 6

1 Gimbal = 1 Degree of freedom = 2 planes of rotation
2 gimbals = 2 degrees of freedom = 3 planes of rotation
- Displacement Gyros: looking for angular displacement
3 Gimbals = 3 degrees of freedom - missile systems

Question 7

Displacement Gyros

Answer 7

Looking for angular displacement

Attitude Indicator
Directional Indicator

Question 8

Displacement Gyro

Answer 8

Measures angular displacement - vertically mounted with movement in the yawing plane

Question 9

Attitude Indicator

Answer 9

Horizontally mounted

Question 10

Wander Categories

Answer 10

Apparent: Transport Wander, Earth Rotation(Rate) Wander

Real: Mechanical imperfections - bearing friction

Question 11

Topple

Answer 11

Max at the EQ
Min at the poles

Cosine Lat

Question 12

Drift

Answer 12

Max at the poles
0 at the EQ

Sin Lat

Question 13

Electric Gyro

Answer 13

The rotor of the motor is the motor of the gyro

Reliable

Expensive

Question 14

Pneumatic Gyro

Answer 14

Uses air jet to rotate (up to 24000rpm)
Sucks air out of the sealed box keeping it a vacuum

The in pipes creates a constant air flow from outside of the box