Electrical Power on aircraft
Hi,
Think of what your primary electrical power is on the aircraft thet you are dealing with, if it is AC then you will have AC generators (current terminology) previously known as alternators generating the power. If the primary power on your aircraft is DC then you will have DC generators generating the power. Many modern Helicopters and smaller fixed wing use DC as the primary power and the generators on them are first rate. I work on the AW139 and the generator, like many other aircraft, also is the starter for the engine. It is very reliable and nothing like the DC generators of old.