Radio wave Propagation Radio Wave Transmission Radio waves propagate or travel as Ionospheric and Non-ionospheric propagation Ionospheric layer is found in the upper levels of stratosphere in atmosphere Radio waves travel or propagate with or without use of Ionosphere Non-Ionospheric propagation takes place without use of ionosphere Ionospheric propagation takes place using the ionospheric layer Non Ionospheric Propagation Non-Ionospheric propagation does not pass through Ionosphere Ground waves propagate without passing through Ionosphere Ground waves are sub-divided into Surface and Space waves Surface Waves Low, Medium and High Frequency waves from…
Electro-Magnetic Waves (EM Wave)
Electro-Magnetic Waves Electrical and Magnetic Field in EM Waves EM waves are created by movement of Alternating current (AC) in a wire Radio aids in aviation use Electro Magnetic Waves (EM Waves) Alternating current creates a magnetic field perpendicular to electric field EM Radiation is transmitted through air if the wire is connected to an Ariel EM Radiation consists of electrical and magnetic components Electrical field in the same plane of the ariel Magnetic field perpendicular to the electrical field Electro Magnetic Spectrum EM waves has a wide spectrum with…
Flight Data Recorder – Cockpit Voice Recorder
Flight Data Recorder and Cockpit Voice Recorder Introduction to FDR Flight data recorder preserves aircraft data for accident investigation Trend analysis and trouble shooting is also done using data from FDR FDR records data for 10 to 25 hours of flight data and kept in Black box Black box is painted red or orange and is located in tail fin The container is resistant to fire, heat, shock and water damage Tail fin location reduces damage due to G forces in an accident Components of FDR Flight data recorder is…