Future Air Navigation System Global Navigation Satellite Systems FANS A1 provides communication, navigation and surveillance system Provides positive control over oceans & polar regions GNSS and Data link are used to provide efficient air-ground communications Automatic Dependent Surveillance Automatic dependent surveillance automatically sends data ATS unit receives the communication using VHF and UHF frequencies FANS-B2 FANS B2 is an improved system of FANS Provides unique digital link address for all aircrafts CPDLC CPDLC Data link messages have a fixed format Messages are activated by pilot or controllers CPDLC messages are…
Head Up Display (HUD)
Head Up Display Components of Head Up Display HUD presents flight information and guidance in a pilot’s visual line of sight In critical phases of flight, like take off or landing the system is very useful Head Up Display system consists of four components Display controller to control various modes Display guidance computer to generate symbology Overhead unit which is a projector Combiner which is a glass screen to reflect displays to pilot Ambient light sensor controls brightness and adjusts display brightness Display brightness is adjusted as per lighting in…
Inertial Reference System (IRS)
Inertial Reference System Introduction to Inertial Reference System Inertial reference system is a stand alone system providing accurate position Ring laser gyro and computers with high computing power are used in IRS Acceleration in pitch, roll and yaw axis is measured and integrated To compare, INS measures accelerations in East West and North South Inertial reference system is a strap down system Gyroscopes and accelerometers are fixed to airframe Reduction in moving parts increase accuracy and maintainability Sagnac Effect Ring laser gyro uses Sagnac effect of laser source to measure…