Lesson 8: Gyro Basics Flashcards
What caused the development for gyro instruments?
SAFETY
What are some instruments that rely on a gyro?
Turn/Bank indicator
Directional Gyro
Artificial Horizon
What is a gyroscope?
A wheel/rotor designed to move freely in any direction while universally mounted
What re the two design considerations for a gyro?
Size:Weight (high density)
Low friction at High Speeds
What are the 2 properties of a gyro?
Rigidity in Space
Precession
What property of gyro allows it to remain rigid in the plane which it is spinning?
Rigidity in Space
Explain Precession?
A force applied on a spinning gyro will be felt 90 degrees in the axis of rotation
If you increase the mass at the rim of the gyro wheel and the speed of rotation, what happens?
Rigidity is increased
How many planes on a gyro and what are they?
- Plane of Rotation
- Plane of Force
- Plane of Precession
What is a gimbal?
Pivot points that allow the gyro to move about it’s axis
The fixation of the rotor is useful for what?
Gimbals reference can be measured = corrective action
What are the ways the rotor assembly can be displaced?
Planes of Freedom
Degrees of Freedom
What does Degrees of Freedom disregard?
Rotor spin about its axis
The term of a gyro indicates what?
Number of DIRECTIONS in which the rotor is free to move
True or False, the number of gimbals = number of degrees of freedom
TRUE
What are the 2 ways of mounting gyros?
Universal
Restricted ( Semi Rigid)
Where would you use a Universal gyro?
Directional
Attitude
Artificial Horizon
Where would you find a Restricted gyro?
Turn Coordinator
Rate gyro
What type of gyro has a spin axis perpendicular to the earth’s surface?
Vertical gyro
The tilting force that cause a gyro to precess is called?
Torque
Any movement of the spin axis away from the fixed direction is called?
Wander
Gyro wander in the horizontal plane is called?
Drift
Gyro wander in the vertical plane is?
Topple
What is real wander?
any movement of spin axis from desired orientation
What is apparent wander caused by?
Observer orientation in space
The 3 sources of real wander?
Imbalance
Bearing Friction
Inertia of Gimbals
How many degrees of freedom does a gyro require to be able to assume any attitude in space?
2 degrees of freedom
