Avionics in general means all electronic,electric and instrumental equipment that are placed into the airplane or helicopter.Thus it consists from many branches.The first one will be the instruments. Instruments at the airplane or the helicopter are used for measuring and controlling various parameters during the ignition of the engine and during the flight.We can divide them into following groups. Barometric instruments Flight speed indicator,Altitude indicator,Variometer.All of them are powered by air pressure static or dynamic component or both of them. Instruments for controlling the parameters of the engine Engine RPM indicator,Main rotor RPM indicator,various temperature controllers for working temperature of components. Exhaust temperature controller everything is combined with such a fine automatics and is very reliable indeed.Shaft controllers, torquemeter they are all obliged to give a correct data to the flying crew. Navigation instruments Flig...