Current affairs: As the amount of electronics on board aircraft continues to grow, so does the importance and sophistication of EMC testing

摘要

I n the 1980s the US Army's UH-60 Blackhawk helicopter fleet was plagued by a spate of crashes that left 22 soldiers dead. Subsequent investigations determined that the helicopter's electronically controlled flight control systems, as well as much of its avionics, were susceptible to radio frequency interference (RFI) from radar antennas, radio or microwave towers and illegal CB radio transmissions. Eventually, the US Army followed the lead of the US Navy and started retrofitting shielding to key components on its UH-60 helicopters.