Aircraft General Knowledge
Gyroscopic Instruments (3) Gyro Stabilization System o
Mechanical Device to automatically correct a deviation of the gyroscope's vertical axis and to erect the gyroscope.
Errors o
Mechanical Errors (Manufacturing, Quality, Age, 1° - 20°/H)
o
Movement errors (aircraft movement - earth rotation, 12°/H at our latitude; 0°/H at the equator; 15°/H at the poles)
Power Sources o
Constant high rotational speed needs to be maintained in order to provide the desired properties of the gyroscope: •
Electrical Power
The gyroscope's rotor is at the same time the rotor of an electric motor running at 20000 – 24000 rpm. Frequently the turn and bank indicator is electrically driven. • Vacuum (Suction) Power An engine driven vacuum pump maintains low pressure inside the housing of the gyro's rotor. The ensuing air stream drives the rotor.
PPL GROUND SCHOOL
AERO-SPORT - LFTA LUXEMBOURG / Reinhard Krommes / 12/10/2011 Slide: 51