Gyroscopes | Precession and Wander

Question 1

Any movement of the spin axis from its initial alignment is called ____

Answer 1

precession

Question 2

Pressure applied to the vertical axis is felt around the ___ axis

Answer 2

horizontal

Question 3

Precession is the angular change in the plane of rotation under the influence of an ___ ___

Answer 3

applied force

Question 4

The rate of precession depends upon:

• ___ and ___ of the applied force,
• Rotor’s moment of ___,
• Rotor’s ___ velocity.

Answer 4

strength and direction
inertia
angular

Question 5

When a gyro moves from a preset position because of precession, it ___

Answer 5

wanders

Question 6

The gyro is drifting when the axis wanders ___, and toppling when it wanders ___.

Answer 6

horizontally, vertically

Question 7

A gyro with only a ___ axis cannot drift

Answer 7

vertical

Question 8

Topple is maximum at the ___

Answer 8

Equator

Question 9

Drift is maximum at the ___

Answer 9

Poles

Question 10

Drift occurs at 15 degrees per hour multiplied by the ___ of the latitude

Answer 10

sin

Question 11

Topple occurs at 15 degrees per hour multiplied by the ___ of the latitude

Answer 11

cos

Question 12

The main cause of precession is ____

Answer 12

Bearing Friction

Question 13

The reaction to a deflective force is not felt at the point at which it is applied, rather that which is __ degrees (later/earlier) in the direction of rotation

Answer 13

90 later

Question 14

The rate at which a gyro precesses is ___ proportional to the speed of the rotor and ___ to the deflective force.

Answer 14

inversely directly