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Aircraft Instruments Test 2 Review > Lesson 8: Gyro Basics > Flashcards

Lesson 8: Gyro Basics Flashcards

1
Q

What caused the development for gyro instruments?

A

SAFETY

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2
Q

What are some instruments that rely on a gyro?

A

Turn/Bank indicator
Directional Gyro
Artificial Horizon

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3
Q

What is a gyroscope?

A

A wheel/rotor designed to move freely in any direction while universally mounted

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4
Q

What re the two design considerations for a gyro?

A

Size:Weight (high density)

Low friction at High Speeds

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5
Q

What are the 2 properties of a gyro?

A

Rigidity in Space

Precession

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6
Q

What property of gyro allows it to remain rigid in the plane which it is spinning?

A

Rigidity in Space

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7
Q

Explain Precession?

A

A force applied on a spinning gyro will be felt 90 degrees in the axis of rotation

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8
Q

If you increase the mass at the rim of the gyro wheel and the speed of rotation, what happens?

A

Rigidity is increased

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9
Q

How many planes on a gyro and what are they?

A
  1. Plane of Rotation
  2. Plane of Force
  3. Plane of Precession
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10
Q

What is a gimbal?

A

Pivot points that allow the gyro to move about it’s axis

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11
Q

The fixation of the rotor is useful for what?

A

Gimbals reference can be measured = corrective action

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12
Q

What are the ways the rotor assembly can be displaced?

A

Planes of Freedom

Degrees of Freedom

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13
Q

What does Degrees of Freedom disregard?

A

Rotor spin about its axis

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14
Q

The term of a gyro indicates what?

A

Number of DIRECTIONS in which the rotor is free to move

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15
Q

True or False, the number of gimbals = number of degrees of freedom

A

TRUE

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16
Q

What are the 2 ways of mounting gyros?

A

Universal

Restricted ( Semi Rigid)

17
Q

Where would you use a Universal gyro?

A

Directional
Attitude
Artificial Horizon

18
Q

Where would you find a Restricted gyro?

A

Turn Coordinator

Rate gyro

19
Q

What type of gyro has a spin axis perpendicular to the earth’s surface?

A

Vertical gyro

20
Q

The tilting force that cause a gyro to precess is called?

A

Torque

21
Q

Any movement of the spin axis away from the fixed direction is called?

A

Wander

22
Q

Gyro wander in the horizontal plane is called?

A

Drift

23
Q

Gyro wander in the vertical plane is?

A

Topple

24
Q

What is real wander?

A

any movement of spin axis from desired orientation

25
Q

What is apparent wander caused by?

A

Observer orientation in space

26
Q

The 3 sources of real wander?

A

Imbalance
Bearing Friction
Inertia of Gimbals

27
Q

How many degrees of freedom does a gyro require to be able to assume any attitude in space?

A

2 degrees of freedom

Aircraft Instruments Test 2 Review (19 decks)

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