DATABASE CONSTRUCTION METHOD FOR MODELING OF AIRCRAFT ENGINE

摘要

A database constructing method for modeling an aircraft engine with utilization of restricted flight test data is provided to construct a database fit to an operation environment of an aircraft simulation system by constructing the database through a comparing process, after finding out a correction coefficient by extracting the flight data, and standardizing important performance values of the engine. Various data for modeling the aircraft engine is inputted(S1). A gross temperature/pressure value considering effects according to a flight speed is found by using ambient temperature/pressure value among the input data(S2). A gross temperature/pressure ratio is calculated by dividing the gross temperature/pressure value by the standard ambient temperature/pressure(S3). The correction coefficient is calculated by using the gross temperature/pressure ratio(S4). A standardized engine performance value is calculated by standardizing a normal/transition state with the correction coefficient(S6). The engine performance value is compared/verified with flight test acceleration/deceleration data of the database(S7). The verified engine performance value is stored to the database in a form available to engine modeling(S8).