Gyros

Question 1

Name the 2 behaviours of a rotating mass?

Answer 1

Rigidity and precession

Question 2

What can increase the stability of a Gyro?

Answer 2

Increasing the Mass or Speed

Question 3

What speed do the Vertical (attitude) gyro and Directional (heading) gyro spin?

Answer 3

15,000 rpm and 10,000 rpm respectively

Question 4

A gyro is distorted, in which direction will it deflect?

Answer 4

90 degrees from the point of application in the direction the wheel is spinning

Question 5

Precession is not desired in directional and vertical gyros but may be used in a?

Answer 5

Rate gyro because the amount of precession is related to the amount of force that caused it.

Question 6

How many degrees of freedom does a vertical and directional gyro have?

Answer 6

2

Question 7

How many degrees of freedom do a rate gyro and rate integrating gyro have?

Answer 7

1

Question 8

What is a vertical gyro used for?

Answer 8

Pitch 85 Degrees and Roll 360 degrees indication

Question 9

In what ways can the vertical gyro be erected?

Answer 9

Air Driven, Electric Driven or with two small steel balls

Question 10

Apparent Drift is caused by?

Answer 10

The earths rotation

Question 11

What is the earth rotation?

Answer 11

15 Degrees and hour

Question 12

At which point on earth does a vertical gyro have maximum apparent drift?

Answer 12

At the equator

Question 13

At which point on earth does a directional gyro have maximum apparent drift?

Answer 13

At the poles

Question 14

What instrument is a rate gyro used in?

Answer 14

Turn and slip indicator

Question 15

The bank angle of a correct flown aircraft depend on?

Answer 15

The speed of the aircraft

Question 16

How are gyros driven?

Answer 16

In modern aircraft by electric motors at speeds between 6 and 20,000 rom. or pneumatically driven

Question 17

What is sensed by laser gyros and where are they used?

Answer 17

They sense angular rate and are used in IRS systems

Question 18

Where is the MAGNETIC north pole located on the earth?

Answer 18

On the south side of the earth.

Question 19

What is variation?

Answer 19

Is the difference in the direction of our geographic poles and the magnetic poles. .

Question 20

What are isogonic lines?

Answer 20

Lines of equal variation.

Question 21

What is inclination?

Answer 21

Inclination is the tendancy for the compass to want to pull downwards when at the poles . It is stronger at the poles and diminishes at the equator.

Question 22

What is the vertical reference line on a compass?

Answer 22

The Lubber Line

Question 23

What is soldered at the bottom of the float on a magnetic compass?

Answer 23

two small bar type permanent magnets aligned with zero and 18 marks .

Question 24

When is a magnetic compass heading correct?

Answer 24

When there is no acceleration, aircraft is horizontal and the reading is corrected with the deviation chard.

Question 25

Where would you find a flux valve installed?

Answer 25

In a wing tip or a location on the aircraft that has a minimum of magnetic interference caused by various electrical circuits.