Inertial Navigation System Introduction to Inertial Navigation Systems INS is an accurate navigational aid for pilots The instrument is independent of any ground installation INS is capable of world-wide operations Advanced form of deduced reckoning is used in INS Inertial Navigation System comprises of three parts inertial navigation unit Mode selector unit Control and display unit Principle of Inertial Navigation Systems Accelerometers and Integrators are the core of Inertial Navigation Systems High grade accelerometers provide acceleration or deceleration Acceleration Integrators integrates acceleration to obtain velocity Velocity integrators further integrates velocity…
Aircraft Magnetism
Aircraft Magnetism Introduction to Aircraft Magnetism Compass north is the north indicated by an aircraft’s compass needle Compass north deviates from magnetic north due to deviation Aircraft magnetism induces deviation error in the compass Ferrous metals and electrical fields cause aircraft magnetism Deviation is the angular difference between compass and magnetic north Compass swing procedure enables us to correct deviation in our compass Deviation Compass Swing Compass swing is used to calculate, correct and record residual error Aircraft’s compass is compared with datum compass outside the aircraft Deviation on cardinal…
Gyro Magnetic Compass
Gyro Magnetic Compass Introduction to Gyro Magnetic Compass Remote indicating compass reduces limitations of direct reading compass In accurate headings during acceleration and turns High deviation due to magnetic sensing element situated in the cockpit Magnetic headings cannot be provided to other instrument Gyro magnetic compass has a directional gyro monitored by compass Drift of gyroscope is corrected by magnetic detector Gyro has a slow precession rate of 3 degrees per minute Slow precession rate damps flux valve errors of magnetic detector Construction of Gyro Magnetic Compass Gyro Magnetic compass…