Drift and Topple of Gyroscopes Gyroscopic Wander Gyro wander is the departure of the gyro spin axis from its original position Wander is calculated with respect to surface of earth Gyroscopic wander is classified as drift and topple Deviation of spin axis in the horizontal plane is called Gyro drift Gyro topple is the deviation of spin axis in a vertical plane Wander in Horizontal and Vertical Axis Gyro Spin axis of horizontal axis gyros are horizontal to the earth’s surface Horizontal axis gyroscopes can drift as well as topple…
Gyroscopic Theory
Gyroscopes Gyroscope & Instruments Gyroscopes are used in a variety of flight instruments Directional gyro indicator and Gyro magnetic compass Artificial horizon and Turn & slip indicator Inertial navigation systems and Inertial reference systems Yaw dampers and Auto pilot Stabilization of radar scanners Gyroscopic Theory Gyroscope has a spinning disc called rotor which spins around its spin axis Gyroscopes have two basic properties of rigidity and precession A highly rigid gyroscope will have low rate of precession and vice versa A gyroscope with its spin axis horizontal to earth surface…
Direct Indicating Compass (DIC)
Direct Indicating Compass Direct Reading Compass Direct reading or indicating compass is the simplest type of aircraft compass DIC uses horizontal component of magnetic field The maximum permissible deviation on any heading is less than 10 deg Horizontality, Sensitivity and Aperiodicity are required in a good compass Construction of Direct Reading Compass Direct indicating compass consists of a liquid filled compass bowl The magnetic assembly consists of a compass card in a pivoted assembly A lubber line in outer casing provides the reference direction The lubber line is aligned with…