Data Processing of Noise Flight Test for Large Civil Aircraft Type Certification

Civil aircraft noise is the main source of the airport and its surrounding areas, in recent years, with the continuous development of the air transport industry, aircraft noise is more and more concerned by the public, according to the International Civil Aviation Convention Annex 16 Volume I and China Civil Aviation Regulations CCAR36 Aircraft Type and Airworthiness Certification Noise Regulations. The noise limit requirements for transport aircraft are put forward. According to the requirements of the regulations, it is the key to determine that the aircraft meets the requirements of the regulations to obtain the noise data through flight test and to obtain the equivalent perceived noise level through data processing. In this paper, the noise data processing process and the key points are analyzed.