PROTECTION OF AN AIRBORNE COMMUNICATION SYSTEM FROM INDIRECT EFFECTS OF LIGHTNING

摘要

Lightning strike can be a pilots worst nightmare. When an aircraft pass through a lightning electric spark, currents start flowing through the skin of the aircraft. Though aircraft cannot be damaged by lightning strike, currents . flowing through the body of the aircraft cause severe damage to electronic circuits in various avionics which are essential for flight operations, this phenomenon is called indirect effects of lightning. Due to the electromagnetic field present in the lightning, high currents are produced in the aircraft cable loom .These high rise currents are called surge currents. Surge currents-when enter circuits can permanently damage or upset the operation of the transceiver. Lightning adaptor is a transient suppressive device which can be connected between transceiver and aircraft loom to handle indirect effects of lightning. Aircraft loom is in fact huge wires assembly that carries various signals in and out of transceiver. Each wire of the Aircraft loom passes through lightning adapter before passing into the transceiver. The surg e signals are suppressed in the lightning adapter and send to the transceiver. And hence smooth operation of the system is ensured.