Gyroscopes

Question 1

What are the two properties of a Gyroscope?

Answer 1

1. Rigidity in Space
2. Precession

Question 2

What is the definition of a space gyro and how are the planes related?

Answer 2

Also known as a free gyro it is able to move in all three planes Both the planes are at right angles to each other

Question 3

A tied gyro is responsible for which instruments?(2)

Answer 3

1. Artificial Horizon
2. DI Indicator

Question 4

A Horizontal gyro is tied to?

Answer 4

A horizontal gyro is tied to the earth horizontal based on an azimuth

Question 5

A rate Gyro is:

• Classified by In which instrument(s)
• Can be developed into?

Answer 5

The rate gyro only has freedom in the plane of rotation and one more plane This can be used for a rate of turn indicator A rate indicating Gyro can be developed from this

Question 6

What type of gyro is in a remote indicating compass?

Answer 6

Tied Gyro

Question 7

How many gimbals does a remote indicating gyro have?

Answer 7

Two

Question 8

What does an inertial accelerometer detect?

Answer 8

Linear Acceleration

Question 9

What is the product of the second intigration in an INS system?

Answer 9

Distance is the product of the second intigration

Question 10

What is a stable platform system?

Answer 10

The stable platform system requires that the accelerometer is always level and aligned to north, measuring accelration relatvie to its platform,

Question 11

What is a wander angle system?

Answer 11

This system is required to be kept on a platform and not worry about being alligned with True North, measuring how far out of alignment it is.

Question 12

What is a strap down system?

Answer 12

A strap down system is a system that is not aligned to north or levelling, detecting how far out of alignment it goes at initialisation and measuring changes from this position.

Question 13

What informaiton is required for alignment.

Answer 13

Latitude information is required for alignment.

Question 14

A strapdown IRU includes, measures and is?

Answer 14

• Three Ring Laser Gyros
• Three Accelerometers
• A strapdown IRU measures the acceleration of the trihedron which is fixed
• A strapdown IRU has faster alignment and is more accurate in the time than a stable platform

Question 15

A space Gyro is…

Answer 15

A space gyro is able to move freely in all three planes in relation to its mounting system

Question 16

Any movement away from the rigidity of a gyro is called?

Answer 16

Wander

Question 17

A tied Gyro is…

Answer 17

Able to move in all three planes, but is now influenced in one of its planes by an external force.

Question 18

The earth gyro is what type of gyro and….

Answer 18

The earth gyro is a tied gyro that is tied to the earthc horizontal by gravity.

Question 19

A rate gyro is….

Answer 19

A rate gyro has rotation in only the plane of rotation and in rotation to 90deg to it.

Question 20

Degrees of freedom are?

Answer 20

The degrees of freedom is another way to classify a gyro and is the number of axes about which gyro displacement can be measured and does not count the axis of rotation.

Question 21

A vertical Gyroscope is…..

Answer 21

Is aligned with the earth vertical